Random Science

?
  • Created by: T Colby
  • Created on: 24-04-15 16:16
What is the lifecycle of a low mass star e.g. the Sun?
Protostar-main sequence star-red giant-white dwarf-black dwarf
1 of 400
What is the lifecycle of a big mass star?
Protostar-main sequence star-red supergiant-supernova-neutron star-black hole (if big enough).
2 of 400
A supernova is a massive ... of a supergiant after it ...
Explosion and collapses
3 of 400
Elements as heavy as ... are formed ... stars as a result of nuclear ...
Iron, inside and fusion
4 of 400
Elements ... than iron are formed in ...
Heavier and supernovas
5 of 400
Our solar system and others and everything in it was all formed from the debris of a ...
Supernova
6 of 400
CMBR stands for what?
Cosminc microwave background radiation
7 of 400
CMBR is ... radiation that was created just after the ... ...
Electromagnetic and Big Bang
8 of 400
The ... a galaxy is moving away from us the bigger its ... ...
Faster and red shift
9 of 400
The ... away a galaxy is the bigger its ... ... is
Further and red shift
10 of 400
Before galaxies and stars were formed the universe was a big cloud of ... and ...
Hydrogen and helium
11 of 400
Doppler effect: towards observer=... wavelength and ... from observer=longer wavelength
Shorter and away
12 of 400
What is a wave source?
Something emitting light or sound
13 of 400
Electricity generators in power stations are driven by ...
Turbines
14 of 400
Coal, oil and natural gas are burned in ... ... power stations
Fossil fuel
15 of 400
In nuclear power stations what two elements are used as their fuels?
Uranium and plutonium
16 of 400
Biofuels are ... sources of energy
Renewable
17 of 400
Wind turbines generate what?
Electricity
18 of 400
Waves generate electricity by turning a ... ...
Floating generator
19 of 400
... generators are tuned by water running downhill
Hydroelectricity
20 of 400
A ... power station traps each high tide and uses it to turn ...
Tidal and generators
21 of 400
Solar ... are flat solid cells that convert solar energy directly into ...
Cells and electricity
22 of 400
Solar ... panels use the Sun's energy to ... water directly
Heating and heat
23 of 400
... energy comes from the energy released by ... substances deep inside the Earth
Geothermal and radioactive
24 of 400
Water pumped into ... rocks underground produces steam to drive turbines and generate ...
Hot and electricity
25 of 400
Nuclear fuels produce ... waste
Radioactive
26 of 400
Renewable energy resources can affect ... and ... life
Plant and animal
27 of 400
The ... of a sound increases as the ... of the wave increases
Loudness and amplitude
28 of 400
Waves can be ...
Reflected
29 of 400
Angle of incidence= angle of ...
Reflection
30 of 400
The narrower the gap the ... the diffraction
Greater
31 of 400
The normal line always has an angle of ...
90 degrees
32 of 400
Sound waves are vibrations in a ...
Substance
33 of 400
Sound waves ... travel through a vacuum
Cannot
34 of 400
What is the order of the electromagnetic spectrum?
Radio-microwave-infrared-visible light-ultraviolet-x-rays-gamma rays
35 of 400
White light contains all the colours of ... light
Visible
36 of 400
Optical fibres transmit are very thin ... fibres that are used to transmit signals by ... and ... radiation
Transparent, light and infrared
37 of 400
Speed of a wave=...times...
Frequency and wavelength
38 of 400
All types of ... waves travel at the ... speed through a ...
Electromagnetic, same and vacuum
39 of 400
Electromagnetic waves are ...
Transverse
40 of 400
Sound waves are ...
Longitudinal
41 of 400
Mechanical waves may be either ... or ...
Transverse and longitudinal
42 of 400
The range of human hearing is about ... Hz to ... Hz
20 and 20000
43 of 400
Hertz shortened is Hz and is used to measure ...
Frequency of a wave
44 of 400
The pitch of a sound increase as the ... of the wave increase
Frequency
45 of 400
Power is what?
The rate of the transfer of energy
46 of 400
Power= ... divided by ...
Energy and time
47 of 400
Energy is measured in ...
Joules (J shortened)
48 of 400
Time is measured in
Seconds (s shortened)
49 of 400
Efficinecy= ... power out divided by ... power in times 100%
Useful and total
50 of 400
Kilowatt-hour shortened is ...
kWh
51 of 400
Energy (kWh)=...(kW) times ... (h)
Power and time
52 of 400
Earth wires are what colour/s
Green and yellow
53 of 400
Neutral wires are what colour?
Blue
54 of 400
Live wires are what colour?
Brown
55 of 400
A fuse contains a ... wire and heats up, melts, and cuts off the ... if the ... it too large
Thin, current and current
56 of 400
A fuse is always fitted in series with the ... wire. This cuts the appliance off from the ... wire if the fuse blows.
Live and live
57 of 400
A ... breaker is an electromagnetic switch that opens (trips) and cuts off the current if too much current passes through the circuit ...
Circuit and breaker
58 of 400
Electrical power supplied is measured in ...
Watts
59 of 400
Watts=...(amperes) times ... ... (volts)
Current and potential difference
60 of 400
An electric current is the ... of flow of ...
Rate and charge
61 of 400
Charge is measured in ...
Coulombs
62 of 400
J=... ... (volts) times ... ... (coulombs)
Potential difference and charge flow
63 of 400
Electrical faults can cause ... and ... which are dangerous
Shocks and fires
64 of 400
When choosing an electrical appliance the ... and ... rating need to be considered
Power and efficiency
65 of 400
You need enough carbohydrates in your balanced diet to ... ...
Release energy
66 of 400
You need enough fats in your balanced diet to ... ... and release ...
Keep warm and energy
67 of 400
You need enough protien in your balanced diet for ..., cell ... and ... replacement
Growth, repair and cell
68 of 400
You need enough fibre in your balanced diet to keep everything moving ... through your ... system
Smoothly and digestive
69 of 400
You need enough vitamins and mineral ions in your balanced diet to keep your ..., ..., ... and everything else generally healthy
Skin, bones and blood
70 of 400
Energy fuels the ... reactions in your body
Chemical
71 of 400
Reactions in your body are called ...
Metabolism
72 of 400
The speed of metabolism is ... rate
Metabolic
73 of 400
Muscle needs more ... than ... tissue
Energy and fatty
74 of 400
Men generally have higher metabolic rates than women because they're ...
Bigger
75 of 400
Genetic factors can affect a persons ... rate
Metabolic
76 of 400
Exercise can boost your resting metabolic rate because it ... muscle
Builds
77 of 400
More energy means ... chemical reactions (metabolic rate) within a persons body
Faster
78 of 400
Health is affected by ..., ... and ... factors
Diet, exercise and inherited
79 of 400
Malnourished people can be ... or ...
Fat and thin
80 of 400
Calories is measured in ...
Kcal
81 of 400
Kilojoules is measured in
kJ
82 of 400
The two main types of pathogen are ... and ...
Bacteria and virus
83 of 400
Bacteria are very small ... cells
Living
84 of 400
Viruses are ... cells
Not
85 of 400
White blood cells ... foreign cells and ... them
Engulf and digest
86 of 400
Cell damage caused by viruses in what makes you feel ...
Ill
87 of 400
White blood cells produce ... and ... to combat antigens on bacteriums and toxins (poisons)
Antibodies and antitoxins
88 of 400
Antibiotics only kill or inhibit the growth of bacteriums and not ...
Viruses
89 of 400
Vaccinations can kill the microorganisms of ... bacteriums and viruses
Both
90 of 400
Vaccinations involve ... a dead or inactive pathogen of a particular infection that have antigens which can only be connected to by specific ...
Injecting and antibodies
91 of 400
Vaccinations increase antibody and antitoxin production from your ... blood cells
White
92 of 400
Booster injections may be required to once again ... levels of antibodies
Increase
93 of 400
Painkillers just ... symptoms they don't actually tackle the problem causing the ...
Relieve and disease
94 of 400
Antibiotics don't kill your own cells whilst killing ...
Bacteria
95 of 400
Viruses reproduce using your own ... cells
Body
96 of 400
Bacteria can double in number every ... ...
20 minutes
97 of 400
Bacteria can ... which can sometimes mean they're resistant to the ... originally designed to kill them
Mutate and antibiotic
98 of 400
MMR stands for what?
Mumps, measles and rubella
99 of 400
MRSA stands for what?
Methicillin-resistant Staphylococcus aureus
100 of 400
Resistant strains developed by bacteria will survive and ... which is an example of ... selection
Reproduce and natural
101 of 400
You can grow bacteria on agar jelly plates with a ... lid and steralised ... and kept at 25 degrees
Cellotaped and equipment
102 of 400
Ignas Semmelweiss introduced antisepics by making doctors wash their ... with a ... solution
Hands and steralised
103 of 400
The five sense organs are what?
Eyes, ears, nose, tongue, and skin.
104 of 400
CNS stands for what?
Central nervous system
105 of 400
Synapses connect ...
Neurones
106 of 400
Reflexes help prevent ...
Injury
107 of 400
Hormones are chemical messengers sent in the ...
Blood
108 of 400
Oestrogen is produced in the ... in men and the ... in women
Testes and Ovaries
109 of 400
Homones can be used to ... and ... fertility
Reduce and increase
110 of 400
Auxin is a ... growth hormone
Plant
111 of 400
Shoots grow ... light and ... from gravity
Towards and away
112 of 400
Roots grow towards ... and ...
Gravity and moisture
113 of 400
Plant hormones have uses in ...
Agriculture
114 of 400
Ion content is regulated by the ...
Kidneys
115 of 400
Water is lost from the body through ..., ..., ... and ...
Sweat, breath, urine and excretion.
116 of 400
Body temperature is controlled by the ...
Brain
117 of 400
Drugs change your ... ...
Body chemistry
118 of 400
Drugs can be ..., ... or performance-enhancing
Medicinal and recreational
119 of 400
Drugs have to be tested before ...
Use
120 of 400
Recreational drugs can be ... or ...
Illegal and legal
121 of 400
Desert animals have adapted to ... water and keep ...
Save and cool
122 of 400
Arctic animals have adapted to reduce ... ...
Heat loss
123 of 400
Some plants and animals have adapted to deter ...
Predators
124 of 400
Organisms compete for ... to survive
Resources
125 of 400
Environmental changes affect ...
Populations
126 of 400
Pyramids of biomass express ...
Food chains
127 of 400
All energy that living things have and use comes from the ...
Sun
128 of 400
The carbon cycle shows how carbon is ...
Recycled
129 of 400
Different genes cause ... variation
Genetic
130 of 400
Sexual reproduction produces genetically ... cells
Different
131 of 400
Asexual reproduction produces genetically ... cells
Identical
132 of 400
Cloning has ... issues
Ethical
133 of 400
Genetic engineering uses ... to cut and paste ...
Enzymes and genes
134 of 400
Genes can be transferred into ... and ...
Animals and plants
135 of 400
All organisms are ...
Related
136 of 400
Oppostion to Darwin included ... ... and ... ... ...
Religious groups and Jean-Baptiste Lamarck
137 of 400
Lamarck's theory was passed on ...
Characteristics
138 of 400
Religious groups believed evolution was the work of ...
God
139 of 400
The nucleus of an atom contains ... and ...
Protons and neutrons
140 of 400
Protons are ... charged
Positively
141 of 400
Neutrons have ... charge
No
142 of 400
Electrons are ... charged
Negatively
143 of 400
A nucleaus of an atom is positively charged overall due to the ...
Protons
144 of 400
Overall an atom is ... due to the ... nucleus and negative ...
Neutral, positive and electrons
145 of 400
Shells of an atom contain ...
Electrons
146 of 400
No. of protons=no. of ...
Electrons
147 of 400
Elements consist of one type of ... only
Atom
148 of 400
The periodic table contains ...
Elements
149 of 400
Show the symbols for carbon, oxygen, magnesium, sodium, iron and lead.
C, O, Mg, Na, Fe and Pb
150 of 400
Only 2 electrons can fit in the ... shell of an atom
First
151 of 400
The second shell can only contain ... elections in an atom
8
152 of 400
The 3rd shell of an atom can only contain ... electrons
8
153 of 400
Atoms join together to make ...
Compounds
154 of 400
A formula shows what atoms are in a ...
Compound
155 of 400
Atoms aren't lost of ... in chemical reactions
Made
156 of 400
Limestone is mainly ... ...
Calcium carbonate
157 of 400
Calcium oxide reacts with ... to produce calcium hydroxide
Water
158 of 400
Ores contain ...
Metals
159 of 400
Metals are ... from their ores ...
Extracted and chemically
160 of 400
Some metals can be extracted by reduction with ...
Carbon
161 of 400
Some metals have to be extracted by ...
Electrolysis
162 of 400
Copper is purified by ...
Electrolysis
163 of 400
Electrolysis means ... ... with electricity
Splitting up
164 of 400
You can extract copper from a solution using a ... reaction
Displacement
165 of 400
Copper-rich ores are in ... supply
Short
166 of 400
Recycling metals and other substances can be more beneficial for the ... and ... of nations
Environment and economies
167 of 400
Name the three characteristics/properties of metals
Strong, bendy and great conductors of electricity
168 of 400
An alloy is a mix of 2 or more ... or a mix of a metal and non-metal
Metals
169 of 400
Alloys are ... than pure ...
Harder and metals
170 of 400
Most iron is converted into ...
Steel
171 of 400
Crude oil is a mixture of ...
Hydrocarbons
172 of 400
Crude oil is split using fractional ... in a fractioning ...
Distillation and column
173 of 400
The longer the molecule of hydrocarbons the greater the ... required to split the hydrocarbons
Temperature
174 of 400
Crude oil is mostly ...
Alkanes
175 of 400
Crude oil can be split into its hydrocarbons to provide different ... for human life
Uses
176 of 400
Bitumen is a hydrocarbon used for laying ...
Roads
177 of 400
Crude oil is non-renewable and will one day ... ...
Run out
178 of 400
Burning fossil fuels releases ... and ...
Gases and particles
179 of 400
Sulfer dioxide causes ... ...
Acid rain
180 of 400
You can reduce acid rain by reducing ... ...
Sulfur emissions
181 of 400
Increasing carbon dioxide causes ... ...
Climate change
182 of 400
Particles cause ... ...
Global dimming
183 of 400
Cracking means splitting up ... ... ...
Long-chain hydrocarbons
184 of 400
Splitting up long chain hydrocarbons is don by passing ... over a hot ...
Vapour and catalyst
185 of 400
Alkenes have a C=C ... ...
Double bond
186 of 400
Ethene can be reacted with ... to produce ...
Steam and ethanol
187 of 400
Ethanol can also be produced from ... ...
Renewable resources
188 of 400
Alkenes can be used to make ...
Polymers
189 of 400
The process of making polymers is called ...
Polymerisation
190 of 400
Polymerisation means joining together small alkene molecules to form very large molecules called ...
Polymers
191 of 400
Small alkene molecules are known as ...
Monomers
192 of 400
If you join many propene moleculcules you get ...
Polypropene
193 of 400
Poly means ...
Many
194 of 400
Polymers are cheap but most don't ... . They're hard to get ... ...
Rot and rid of
195 of 400
Oils can be extracted from plants. Vegetable oils are used in ...
Food
196 of 400
Vegetable oils can also be used to produce ... for vehicles
Fuels
197 of 400
Hydrogenation means hardening liquidised unsaturated vegetable oils with ... in the prescence of a ... catalyst at about ...
Hydrogen, nickel and 60 degrees celcius
198 of 400
Emulsions can be made from ... and ...
Oil and water
199 of 400
Some foods contain ... to help ... and water mix
Emulsifiers and oil
200 of 400
Alfred Wegener developed the theory of ... ...
Continental Drift
201 of 400
Continental Drift shows how continentents were once ...
Connected
202 of 400
Fossils of the same species can be found in different ... . For example Africa and South America
Continents
203 of 400
Africa's ... coast and South America's ... coast fit like a jigsaw
Eastern and western
204 of 400
Also there were matching ... in rocks in different continents
Layers
205 of 400
Wegener published his theory of Continental Drift in ...
1915
206 of 400
The Earth's crust is made of ... ...
Tectonic plates
207 of 400
When tectonic plates collide or move volcanoes ... and ... occur
Errupt and earthquakes
208 of 400
Convection currents in the Earth's ... cause the tectonic plates to move
Mantle
209 of 400
Tectonic plates are situated in the Earth's upper ... and ...
Mantle and crust
210 of 400
The Earth's structure consists of an ... ..., ... ..., ... and ...
Inner core, outer core, mantle and crust
211 of 400
Scientists can ... eruptions and ... by monitoring the behaviour of volcanoes and activity of the mantle
Predict and earthquakes
212 of 400
The first phase of the atmosphere's evolution was what?
Volcanoes gave out gases
213 of 400
The second phase of the atmosphere's evolution was what?
Green plants evolved and produced oxygen
214 of 400
The third phase of the atmosphere's evolution was what?
Ozone layer allowed the evolution of complex animals
215 of 400
The Earth has all the ... humans need
Resources
216 of 400
Primordial soup is one theory of how ... on Earth was formed
Life
217 of 400
Heat is transferred by ..., ... and ...
Radiation, conduction and convection
218 of 400
Heat radiation is the transfer of heat energy by ... ...
Infrared radiaton (IR shortened)
219 of 400
Conduction and ... involve the transfer of energy by ...
Convection and particles
220 of 400
Conduction is heat tranfer in ...
Solids
221 of 400
Convection is heat tranfer in ...
Liguids and gases
222 of 400
Liquids and gases are ...
Fluids
223 of 400
IR can be emitted by ..., ... and ...
Solids, liquids and gases
224 of 400
Any object can absorb and emit ...
IR
225 of 400
The bigger the ... difference between an object and its surroundings the ... energy is transferred by ...
Temperature, faster and heating
226 of 400
IR is ... of ... ...
Emission and electromagnetic waves
227 of 400
..., ... surfaces absorb IR much better than light, shiny surfaces. They also ... much more IR
Dark, matt and emit
228 of 400
..., ... surfaces reflect a lot of IR falling on them
Light and shiny
229 of 400
The three states of matter are ..., ... and ...
Solids, liquids and gases
230 of 400
Describe the characteristics of a solid
Close together and fixed particles with little energy and can only vibrate
231 of 400
Describe the characteristics of a liquid
Weak forces betwen particles with irregular arrangements that move in random directions at low speeds
232 of 400
Describe the characteristics of a gas
More energy than particles in a solid and gas and move in random directions at high speeds
233 of 400
Conduction of heat occurs mainly in ...
Solids
234 of 400
Metals are good conductors because of their ... electrons
Free
235 of 400
Convection of heat is in ... and ... only
Liquids and gases
236 of 400
Condensation is when ... turns to a liquid
Gas
237 of 400
When humans and animals sweat they're ... down their bodies
Cooling
238 of 400
There are 5 main ways to reduce heat transfer in the home. These are loft ..., ... ... tank jacket, ... glazing, ... proofing and cavity ... insulation
Insulation, hot water, double, draught and wall
239 of 400
Specific heat capacity tells you how much ... stuff can ...
Energy and store
240 of 400
Specific heat capacity formula=energy transferred=...times...times..
Mass, specific heat capacity and temperatue change
241 of 400
Mass is usually represented in ...
Kilograms (kg shortened)
242 of 400
Heaters have ... heat capacities to store lots of ...
High and energy
243 of 400
Specific heat capacity is represented in ...
J/kgdegreesC
244 of 400
The nine types of energy are what?
Electrical, light, sound, kinetic, nuclear, thermal, GPE, elastic potential and chemical
245 of 400
Kinetic energy is also known as ... energy
Movement
246 of 400
Electrical energy is whenever a ... flows
Current
247 of 400
Light energy comes from the ... and other ... sources
Sun and light
248 of 400
Sound energy comes from anything ...
Noisy
249 of 400
Kinetic energy comes from anything that ...
Moves
250 of 400
Nuclear energy is released only from ... ... stations
Nuclear power
251 of 400
Thermal energy is also known as ... energy
Heat
252 of 400
Thermal energy flows from ... objects to colder ones
Hot
253 of 400
GPE is possesed by anything that can ...
Fall
254 of 400
Elastic potential energy is anything that can ... and return to its previous state
Stretch
255 of 400
Chemical energy is possesed by foods, ... and batteries etc
Fuels
256 of 400
Potential and chemical energy are forms of ... energy
Stored
257 of 400
Stored energy means it is ... to happen
Waiting
258 of 400
Energy can be ... usefully from one form to another and ... or dissipated
Transferred and stored
259 of 400
Energy can never be ... or ...
Created and destroyed
260 of 400
Energy is only useful when it can be ... from one form to another
Converted
261 of 400
Efficiency=useful energy ... divided by total energy ...
Out and in
262 of 400
Efficiency also=useful power ... divided by total power ...
Out and in
263 of 400
Wasted energy means you can't do anything ... with it
Useful
264 of 400
Sometimes waste energy can actually be ...
Useful
265 of 400
In sankey diagrams the thickness of the arrow represents the ... of ...
Amount and energy
266 of 400
Energy=power times ...
Time
267 of 400
Renewable energy resources will ... run out
Never
268 of 400
Biofuels are made from ... and ...
Plants and waste
269 of 400
Electricity is distributed by the ... ...
National grid
270 of 400
All waves have an ..., a ... and a ...
Amplitude, wavelength and frequency
271 of 400
Wave speed= ... times ...
Frequency and wavelength
272 of 400
Transverse waves have ... vibrations
Sideways
273 of 400
Longitudinal waves have vibrations along the same ...
Line
274 of 400
All waves can be ..., ... and ...
Reflected, refracted and diffracted
275 of 400
Diffraction is waves ... out
Spreading
276 of 400
Changing the speed of a light wave can change its ...
Direction
277 of 400
Radio waves are mainly used for ...
Communication
278 of 400
Microwaves are mainly used for satellite ... and mobile phones
Communication
279 of 400
Infrared waves are used for ... controlls and optical ...
Remote and fibres
280 of 400
Visible light is used for ...
Photography
281 of 400
Sound waves can reflect and ...
Refract
282 of 400
The higher the frequency of a sound wave the higher the ...
Pitch
283 of 400
Animal cells have what 5 feartures?
Nucleus, cell membrane, ribosomes, cytoplasm and mitochondria
284 of 400
Plant cells contain what 6 feartures?
Nucleus, cell wall, cell membrane, cytoplasm, vacuole and chloroplasts
285 of 400
Nucleus controls the activities of the ... and contains ... material
Cell and genetic
286 of 400
The cytoplasm contains a gel like substance that contains ... which control ... reactions reactions in the cytoplasm
Enzymes and chemical
287 of 400
Enzymes are made of ... and ... are made of amino acids
Protiens and protiens
288 of 400
The cell mambrane holds the cell ... and controls what goes ... and ...
Together and in and out
289 of 400
Diffusion is where ... spread out from an area of ... concentration to an area of ... concentration through the cell ...
Particles, high, low and membrane
290 of 400
The mitochondria is where ... reactions take place for respiration. Respiration releases ... that the cell needs to work
Chemical and energy
291 of 400
The ribosomes are where ... are made in the cell
Protiens
292 of 400
The cell wall is made of ... and it ... the cell and ... it
Cellulose, supports and strengthens
293 of 400
The vacuole contains cell ... which is a weak solution of ... and ...
Sap, sugar and salts
294 of 400
The chloroplasts are where ... occurs, which makes ... for the plant and it contains a green substance called ...
Photosynthesis, food and chlorophyll
295 of 400
Yeast is a single ... organism
Celled
296 of 400
Bacterial cells have no ...
Nucleus
297 of 400
Substances have to be ... before they can diffuse in and out of the cell ...
Dissolved and membrane
298 of 400
Red blood cells carry ... around the body through the blood to muscles and other bodily areas
Oxygen
299 of 400
The male ... cell fertilises the female ... cell during reproduction
Sperm and egg
300 of 400
Cells are organised into ...
Tissues
301 of 400
Tissues are organised into ...
Organs
302 of 400
Organs are organised into ...
Organ systems
303 of 400
Name two organ systems?
Reproductive system and digestive system
304 of 400
What is the equation for photosynthesis?
Carbon dioxide+water arroe with sunlight and chlorophyll goes to glucose+oxygen
305 of 400
Photosynthesis produces glucose using ...
Sunlight
306 of 400
Lack of light and carbon dioxide ... ... the rate of photosynthesis
Slows down
307 of 400
What is the shortened version for carbon dioxide?
CO2
308 of 400
How do plants use glucose?
For respiration, to make cell walls, to make protiens and to store it in seeds and as starch
309 of 400
You can artificially creat the conditions for ... in a greenhouse
Farming
310 of 400
Organisms live in different places because of the ... varies
Environment
311 of 400
Enzymes are basically ... produced in living things
Catalysts
312 of 400
For enzymes to work effectively they need the correct ... and ... level
Temperature and pH
313 of 400
A catalyst is a substance that ... the speed of a reaction without being ... or ... ... in the reaction
Speeds, changed and used up
314 of 400
Enzymes have an ... site which can connect to specific substances in ...
Active and reactions
315 of 400
If the temperatue or pH level is too high then the enzymes bonds ... which causes the enzyme to ... and not catalyse reactions
Break and denature
316 of 400
Digestive enzymes break down ... molecules into ... ones
Big and smaller
317 of 400
Amylase converts ... into ...
Starch and sugars
318 of 400
Protease converts ... into ...
Protiens and amino acids
319 of 400
Lipase converts ... into ... and ... ...
Lipids, glycerol and fatty acids
320 of 400
Bile neutralises the stomach acids and ... fats
Emulsifies
321 of 400
Bile is produced in the ...
Liver
322 of 400
Bile is stored in the ... ...
Gall bladder
323 of 400
Amylase is produced in the ... ...
Salivary glands
324 of 400
The gullet is also known as the ...
Oesophagus
325 of 400
The protease enzyme is called ...
Pepsin
326 of 400
The stomach contains ... acid to kill ... and to provide the correct ... level for enzymes to work
Hydrochloric, bacteria and pH
327 of 400
What three enzymes does the pancreas produce?
Amylase, protease and lipase
328 of 400
The rectum is where faeces is ... and faeces exits the body through the ...
Stored and anus
329 of 400
Respiration is the process of releasing ... from ... which goes on in every cell
Energy and glucose
330 of 400
Name the two types of respiration?
Aerobic and Anaerobic
331 of 400
What is the difference between aerobic and anaerobic respiration?
Aerobic involves the prescence of oxygen and anaerobic doesn't
332 of 400
The aerobic respiration equation is what?
Glucose+oxygen arrow carbon dioxide+water+energy
333 of 400
Exercise increases the ... rate
Heart
334 of 400
Glycogen is used during ...
Exercise
335 of 400
Some ... from food is stored as glycogen
Glucose
336 of 400
Name the anaerobic respiration equation?
Glucose arrow energy+lactic acid
337 of 400
Anaerobic respiration leads to an ... debt
Oxygen
338 of 400
Enzymes are used in ... detergents
Biological
339 of 400
Enzymes are used to change ...
Foods
340 of 400
Non-biological detergents don't contain ...
Enzymes
341 of 400
Chromosomes are really long molecules of ...
DNA
342 of 400
A gene codes for a specific ...
Protien
343 of 400
Everyone has ... DNA
Unique
344 of 400
Every human cell contains ... pairs of chromosomes with a total of ... chromosomes in each cell
23 and 46
345 of 400
DNA can be used to solve ... by using DNA ...
Crimes and fingerprinting
346 of 400
Mitosis makes new cells for ... and ...
Growth and repair
347 of 400
Asexual reproduction also uses ... like sexual reproduction
Mitosis
348 of 400
Sex cells are also known as ...
Gametes
349 of 400
Gametes have half the usual number of ...
Chromosomes
350 of 400
Meiosis produces cells which have half the normal number of ...
Chromosomes
351 of 400
After two gametes join at fertilisation the cell then grows by repaetedly dividing by ...
Mitosis
352 of 400
Differentiation is the process of a cell becoming ... to perform a particular function
Specialised
353 of 400
Stem cells are cells that are ... but can turn into other types of cell depending on the ... they're given
Undifferentiated and instructions
354 of 400
All men have ... ... chromosomes
XY
355 of 400
All women have ... ... chromosomes
**
356 of 400
Genetic diagrams show what potential ... animals could have/create
Offspring
357 of 400
Cystic fibrosis is caused by a ... allele which means the disease has carriers
Recessive
358 of 400
Diseases caused by a dominant alleles don't have ...
Carriers
359 of 400
Fossils are the remains of ... and ...
Plants and animals
360 of 400
Extinction happens if a species can't evolve ... enough
Quickly
361 of 400
Speciation is the development of a new ...
Species
362 of 400
Isolation and natural selection lead to ...
Speciation
363 of 400
The mass number is the total number of ... and ...
Protons and neutrons
364 of 400
The atomic number is the number of ...
Protons
365 of 400
Compounds are ... bonded
Chemically
366 of 400
Isotopes are different ... forms of the same element which have the same number of protons but a different number of ...
Atomic and neutrons
367 of 400
Ionic bonding is the transferring of ... to form charged particles
Electrons
368 of 400
Charged particles are called ...
Ions
369 of 400
Ionic compounds have a regular ... structure
Lattice
370 of 400
Ionic compounds all have similar ...
Properties
371 of 400
The similar properties of ionic compounds are what?
High melting and boiling points due to the strong attraction between ions
372 of 400
Ionic compounds dissolve easily in ...
Water
373 of 400
Covalent bonds involve the sharing of ...
Electrons
374 of 400
Giant covalent structures are ...
Macromolecules
375 of 400
The rate of reaction depends on what 4 things?
Temperature, concentration, catalyst and surface area of solids
376 of 400
State three ways of how you can measure the rate of reaction
Precipitation, change in mass and the volume of gas given off
377 of 400
More collisions between partciles in a shorter period of time increase the ... of ...
Rate of reaction
378 of 400
Higher concentration/pressure increase ...
Collisions
379 of 400
Larger surface increases ...
Collisions
380 of 400
Catalysts help reduce ... in industrial reactions
Costs
381 of 400
In an exothermic reaction ... is given ...
Heat and out
382 of 400
In an endothermic reaction ... is taken ...
Heat and in
383 of 400
Reversible reactions can be ... and ...
Exothermic and endothermic
384 of 400
The pH scale goes from 0-14. What number end is acid? What number is neutral? What number end is alkalis?
0, 7 and 14
385 of 400
7 is neutral on the pH scale. What is this substance?
Water
386 of 400
An indicator is a dye that changes ... to estimate the pH level of a solution
Colour
387 of 400
Acids and bases ... each other
Neutralise
388 of 400
Metals react with acids to give ...
Salts
389 of 400
Hydrochloric acid will always give ... salts
Chloride
390 of 400
Metal oxides and metal hydroxides are ...
Bases
391 of 400
You can make soluble salts using an ...
Alkali
392 of 400
You can make insoluble salts using a ... reaction
Precipitation
393 of 400
Soluble means what?
The substance can be dissolved in water
394 of 400
Insuluble means what?
The substance can't be dissolved in water
395 of 400
Electrolysis means what?
Splitting up with electrons
396 of 400
Electrolysis reactions involve ... and ...
Oxidation and reduction
397 of 400
Oxidation is the gain of ... or a loss of ...
Oxygen and electrons
398 of 400
Reduction is a gain of ...
Electrons
399 of 400
Reactivity affects the ... formed by electrolysis
Products
400 of 400

Other cards in this set

Card 2

Front

What is the lifecycle of a big mass star?

Back

Protostar-main sequence star-red supergiant-supernova-neutron star-black hole (if big enough).

Card 3

Front

A supernova is a massive ... of a supergiant after it ...

Back

Preview of the front of card 3

Card 4

Front

Elements as heavy as ... are formed ... stars as a result of nuclear ...

Back

Preview of the front of card 4

Card 5

Front

Elements ... than iron are formed in ...

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »See all Random Science resources »