Biology revision notes~

You win!.

HideShow resource information
  • Created by: allaiya
  • Created on: 20-12-13 11:03
Alcohol, solvents and temazepam are examples of this type of drug.
Depressants.
1 of 35
Antibodies stay in your blood for a long time. They are ready to fight more of the same pathogens and so make you ...?
Immune
2 of 35
Asexual reproduction produces …?
Genetically identical individuals called clones.
3 of 35
Clones have all their genes from …?
One parent
4 of 35
DNA contains four bases known as …?
A,C,T and G
5 of 35
DNA controls the production of …?
Protein
6 of 35
Give three examples of beneficial drugs.
Antibiotics, painkillers, insulin.
7 of 35
Give two examples of hard drugs.
Heroin and cocaine.
8 of 35
Give two ways in which a bacterial cell is different from an animal cell.
A bacterial cell has a cell wall and the genes are not inside a proper nucleus.
9 of 35
Gradual cooling of the body to a dangerously low temperature is called ...?
hypothermia
10 of 35
How are leaves adapted to absorb sunlight?
They have a large surface area and lots of chloroplasts in the palisade layer.
11 of 35
How are leaves adapted to gas exchange?
They are thin and allow gases to diffuse in and out through pores called stomata.
12 of 35
How can long and short sight be corrected?
By lenses in glasses, contact lenses or corneal surgery.
13 of 35
How do mutations affect DNA?
They change the base sequence.
14 of 35
How do stimulants and depressants affect the nervous system?
By affecting transmission of nerve impulses across synapses.
15 of 35
How does carbon dioxide enter the leaf cells?
By diffusion.
16 of 35
How does the skin react when it is cold.
Blood vessels at the skin surface close up. Less blood flows to the skin surface. Sweating stops. The hairs stand up trapping air and cutting down heat loss.
17 of 35
How does the skin react when it is hot?
Blood vessels at the skin surface widen and more blood gets to the surface. Sweating increases.
18 of 35
How does your body form a physical barrier to pathogens?
The skin acts as a barrier, mucus in the air passages traps pathogens, the blood clots and forms a scab.
19 of 35
How have some disease microbes become resistant to antibiotics?
As a result of a gene mutation.
20 of 35
How is the upper epidermis adapted for efficient photosynthesis?
It is transparent.
21 of 35
If we don’t have enough of each type of vitamin and mineral in our diet we can get a ...?
Deficiency disease.
22 of 35
In sexual reproduction half the genes come from …?
Each parent
23 of 35
In the UK, drugs are legally classified. Which group is the most dangerous, with the heaviest penalties?
Class A
24 of 35
In which type of variation are there clear-cut differences with no in-betweens?
Discontinuous Variation
25 of 35
Insulin lowers blood sugar by changing glucose to ...?
Glycogen
26 of 35
Name five of the body's control systems that rely on negative feedback
Control of blood sugar, water content, pH, temperature, carbon dioxide concentration.
27 of 35
Name four toxins substances found in tobacco smoke.
Nicotine, tar, carbon monoxide and particulates.
28 of 35
Name four ways in which pathogens can be spread.
In the air, by touching, in food and water, by animals.
29 of 35
Name some human characteristics thought to result from both environmental and inherited factors.
Intelligence, body mass, height.
30 of 35
Name three adaptations that neurones have to help them carry out their function.
Long length, insulating sheath, branched endings.
31 of 35
Name three key characteristics of reflex actions.
Fast, automatic, protective.
32 of 35
Name two body disorders that you have studied.
Cancer and diabetes
33 of 35
Nicotine, caffeine and ecstasy are examples of this type of drug.
Stimulant
34 of 35
Proteins are needed for...?
Growth and repair of cells.
35 of 35

Other cards in this set

Card 2

Front

Antibodies stay in your blood for a long time. They are ready to fight more of the same pathogens and so make you ...?

Back

Immune

Card 3

Front

Asexual reproduction produces …?

Back

Preview of the front of card 3

Card 4

Front

Clones have all their genes from …?

Back

Preview of the front of card 4

Card 5

Front

DNA contains four bases known as …?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Fun resources:

See all Fun resources »See all resources »