Bio paper 2 sparx science

Question 1

B7 -what is the source of all energy in a food chain?

Answer 1

The sun

Question 2

4 factors that plants compete for?

Answer 2

1. water
2. soil minerals
3. sunlight
4. space

Question 3

what is the difference between interspecific and intraspecific competition?

Answer 3

Interspecifc - competition between different species
Intraspecific - competition within the same species

Question 4

what are 3 things animals compete for?

Answer 4

1. Territory
2. water
3. food

Question 5

name 2 pieces of equipment needed for the belt transect method?

Answer 5

1. tape measure
2. quadrat

Question 6

what is parasitism?

Answer 6

when one organism lives off another whilst causing it harm

Question 7

what is the apex predator?

Answer 7

the final organism in a food chain

Question 8

1.what is the name of the organism that lives off another organism causing it harm?
2. what is the names for the organism that is being harmed

Answer 8

1. a parasite
2. the host

Question 9

where does the energy in a food chain originate from?

Answer 9

the sun

Question 10

what is biomass?

Answer 10

all of the living material that makes up an organism

Question 11

how does the myelin sheath affect the speed of neurotransmission?

Answer 11

it speeds it up

Question 12

where do impulses pass from? (4)

Answer 12

dendrites –> dendron –> axon—> axon endings

Question 13

synapese (3)

Answer 13

1. are gaps between neurones
2. neurotransmission is slower acroos synapses than along neurones
3. only allow impulses to travel in one direction

Question 14

give an example of a reflex action?

Answer 14

coughing

Question 15

what is the names of the structure that transmits impulses?

Answer 15

the axon

Question 16

what is caffeine an example of?

Answer 16

a stimulant

Question 17

what substances do glands produce?

Answer 17

hormones

Question 18

which organ system in the body produces and releases hormones?

Answer 18

endocrine

Question 19

what process causes the neurotransmitter to move across the gap between the neurones?

Answer 19

diffusion

Question 20

what can you calculate to assess the risk of a person developing type 2.

Answer 20

calculating their waist-to-hip ratio

Question 21

how is type 2 diabetes controlled? (2)

Answer 21

1. regular excercise
2. A low - carbohydrate diet

Question 22

what are physical processes and chemical processes?

Answer 22

physical processes - e,g the movement of substances via diffusion or osmosis

chemical processes - e.g reactions in the body such as metabolism or respiration

Question 23

give 2 examples of chemical processes

Answer 23

metabolism and respiration

Question 24

give 2 examples of physical processes?

Answer 24

diffusion and osmosis