Biology (GCSE)- Summer term (Yr.10)

what is the equation for photosynthesis ?
carbon dioxide+water= oxygen+glucose
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what type of reaction is photosynthesis ?
endothermic because it takes in energy from the surroundings
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what type of reaction is respiration ?
exothermic because it releases energy stored in glucose
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whats the equation for respiration ?
glucose+oxygen=carbon dioxide+water
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what do plants use glucose for ?
to harden a cell wall by using cellouse which makes the plant grow tall, fruit, seeds, insoluble starch stored in potatoes, get minerals from soil, protein synthesis
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what four things affect the rate of photosynthesis ?
sunlight, water, chlorophyll, carbon dioxide
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draw the four graphs for the things above:
book 2
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what adaptations does a green house have to help plant growth ?
clear glass to allow sunlight through, automatic watering system, electric lighting, paffin heater which controls temperature and gives off carbon dioxide
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what is respiration ?
the release of energy, transfers energy from glucose
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where does respiration happen ?
in every cell continously
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what type of reaction is respiration ?
exothermic
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where does aerobic respiration happen ?
in the mitochondria
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what is the energy produced by photosynthesis used for ?
muscle contaction, keep warm and building large molecules
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whats the equation for anaerobic respiration in yeast and bacteria ?
glucose= ethanol+carbon dioxide
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what is oxygen debt ?
the amount of oxygen the body needs after oxygen to repay the lactic acid build up
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what is anaerobic respiration in yeast called ?
fermentation, used to make alcohol and bread
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what is the law of limiting factors ?
when a process depends on two or more factors, the rate of that process is limited by the factor which is in shortest supply
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what does the rate of photosynthesis depend on ?
light intensity, carbon dioxide, chlorophyll, temperature
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what does metabolism mean ?
all the chemical reactions that happen in a cell or body
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what does metabolic rate mean ?
the speed at which the chemical reactions in your cells use energy
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what things affect metabolic rate ?
age, older the slower,- more exercise, higher- more muscle to fat, faster- males higher than females
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how do you measure fitness ?
by measuring your resting heart and breathing rate then do exersize and the shorter amount of time it takes for the rates to return to normal the fitter you are
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how does exercise affect the heart and lungs ?
heart- becomes stronger, arteries widen, lowers resting heart rate. lungs- increase in volume
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draw graph from book two and explain
000
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define competition
trying to win or gain something by deafting others
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what do animals compete for ?
food, water, teritoy, mates
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what do plants compete for ?
light, water, space, minerals
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define interspecific competition
competition between two different species
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define habitat
place where an organism lives
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define population
all of the organisms of one species living in a habitat
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define community
populations of different species living in a habitat
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define a abiotic factor
non living factors of the environment eg. temp
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define a biotic factor
living factors of the environment eg, food
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define ecosystem
the interaction of a community of living organism with the non living parts of their environment
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what is a structural adaptation ?
features of an organisms body structure eg, shape or colour, artic animals have white fur so theyre camoflauged
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what is a behavioral adaptation ?
ways an organism behaves, eg, birds migrate to aviod living probelms to do with weather
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what is a functional adaptation ?
things which go on inside an organisms body that can be related to reproduction or metabolism eg, desernt animals consereve water by producing little sweat and small concentrated amounts of urine
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define extremeophile
an organism which is adapted to live in extreme conditions, thermococus litoralis lives in the deep sea with temperatures of 85-88 degrees
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define predator
consumers which hunt and kill other animals
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define biomass
the mass of organic matter in an organism
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define producer
plants=start of the food chain
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what is the difference between a pyramid of numbers and a pyramid of biomass?
pyramid of numbers isnt always a pyramid shape but pyramid of biomass is
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define trophic
feeding level on a food chain
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define food chain
sequence showing feeding relationships
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define consumer
organism which eats other organisms
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define herbivore
organism which only eats plants
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9.7.18
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Other cards in this set

Card 2

Front

what type of reaction is photosynthesis ?

Back

endothermic because it takes in energy from the surroundings

Card 3

Front

what type of reaction is respiration ?

Back

Preview of the front of card 3

Card 4

Front

whats the equation for respiration ?

Back

Preview of the front of card 4

Card 5

Front

what do plants use glucose for ?

Back

Preview of the front of card 5
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