AQA Combined Science Trilogy Biology Paper 2 E-Mock

#1. Sensory neurones have a fatty layer of insulation, what is it called?

enamel layer

myelin sheath

chitinous brief

1

#2. Respiration from animals is a source of carbon dioxide in the atmosphere - do plant also use respiration?

yes

no

#3. How do most plants get their nitrogen?

From the soil - absorbed through their roots

From the air - absorbed through their leaves

#4. What is the gap between neurones called?

enter answer here...

#5. Which of the following is the source of coal?

dead plankton from millions of years ago

dead and buried plant material from millions of years ago

nuclear decay from millions of years ago

#6. The Nervous System is made up of two parts, the Central Nervous System (CNS) and what other part?

cardiovasular system

peripheral nervous system

receptor effector system

3

#7. What is the name of the chemicals that we use to transmit messages through the blood to organs?

enter answer here...

#8. Upon the release of adrenaline do blood vessels widen, narrow or both?

Narrow

Widen

Both

The blood vessels are constricted or dilated depending on where the blood flows.

The muscles required for running for example are dilated since they are required to match the “fight or flight” response. Others are constricted as they are temporarily deemed less important.

#9. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?

Tertiary consumer

Secondary consumer

Primary consumer

#10. By which process does water in the clouds move onto land?

distillation

precipitation

condensation

evaporation

sublimation

#11. Which of these is an effector?

brain

muscles

shins

stomach

#12. Finish the sentence: Nitrogen compounds found in artificial fertilisers are ......... and dissolve in the soil's water.

soluble

potable

permeable

#13. Match the description to the correct term. All of the individuals of a species that live in a particular woodland.

Habitat

Ecosystem

Population

Community

#14. Which of these is an effector?

teeth

brain

glands

bones

#15. Which term do we use to describe the relationships between species that depend on each other for resources?

Extradependent

Interdependent

Intradependent

Codependent

#16. Producers are organisms which do what?

Make glucose through photosynthesis

Eat other organisms that produce glucose

#17. Which pathway is used when rapid automatic responses are needed by your body to external stimuli, like touching a hot object?

via the CNS

via reflex arcs

through the normal pathways

#18. What natural source of nitrogen is sometimes added to fields by farmers?

enter answer here...

#19. What effect does adrenaline have on the liver?

Causes a decrease in blood sugar concentration

Causes the breakdown of glycogen to release glucose

Causes a spike in growth hormone

#20. What do we mean by the distribution of organisms?

How many organisms there are in one quadrat

Where organisms are found

The composition of species within a community

#21. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?

enter answer here...

#22. What travels along neurones to pass information through the nervous system?

electrical signals

photons

protons

chemicals

#23. Complete the equation used to calculate population size: population size = .............. x total size of it habitat / total area of quadrats

population size = number of organisms in all quadrats x total size of habitat / total area of quadrats

population size = number of organisms in one quadrat x total size of habitat / total area of quadrats

population size = number of organisms in all quadrats x total size of community / total area of quadrats

#24. What are two systems which allow your body to respond to its surroundings?

Select all that apply:

Nervous system

Hormonal system

Skeletal system

Muscular system

#25. Which of these processes allows saltwater to become potable?

filtration

distillation

precipitation

#26. Why do plants need nitrogen?

Nitrogen is a key ingredient in photosynthesis

Nitrogen is one of the ingredients in cellulose which makes up their cell walls

They have compounds containing nitrogen in their DNA and in proteins

#27. Match the description to the correct term. All of the organisms that live in a particular pond.

Ecosystem

Population

Community

Habitat

#28. Which of these is an ecosystem?

Includes all of the organisms in a particular environment as well as the environment itself

Includes the local environment where an organism normally lives

Includes all of the individuals of a particular species in an environment

Includes all of the organisms that live in a particular environment

#29. Nitrogen is often found in a particular form in the soil what is this form?

Nitrogen gas

Nitrates

Carbohydrates of nitrogen

#30. What is the role of effectors?

interpret impulses

convert impulses into actions

detect impulses

#31. How does nitrogen in plants get into the soil?

A special kind of fungi extracts the nitrogen from living plants and releases it into the soil

All plants release nitrogen into the soil as they grow

Animals eat plants and die or excrete the nitrogen in their waste.

#32. When fossil fuels are burned they release carbon into the atmosphere - which of the following are fossil fuels?

nuclear fuels

peat

wind

#33. Why do plants need oxygen?

Plants also do aerobic respiration - to get energy from glucose

Plants need oxygen to build their cell walls

#34. What does potable water mean?

you can put it in a pot

you cannot drink it safely

you can drink it safely

#35. When is adrenaline released?

When you are scared or excited

When you are relaxed

When you are sleeping

#36. Which of these is a population?

Includes all of the individuals of a particular species in an environment

Includes all of the organisms that live in a particular environment

Includes all of the organisms in a particular environment as well as the environment itself

Includes the local environment where an organism normally lives

#37. Which of the following is an effect stimulated by the thyroxine hormone?

increased density of bones

increased heart rate

decreased growth rate

#38. True or false - carbon dioxide is removed from the atmosphere as it dissolves in the oceans?

false

true

#39. We sometimes use a transect to perform systematic sampling. This involves which of the following?

Sampling at random

Sampling using a complex system of North, South, East and West samples combined with a random coin-flip to determine direction

Sampling every time your reach a predefined distance, such as every 5 metres

#40. What do we call animals that eat both other animals and plants?

enter answer here...

#41. Name one hormone that is released from the ovaries?

enter answer here...

#42. Where does the water in lakes and rivers end up?

clouds

oceans

#43. What do we call animals that are eaten by other animals?

Predators

Prey

#44. How can we increase the accuracy of abundance estimates?

Use a different calculation

Increase the number of quadrats

Take abundance estimates of different days throughout the year

#45. Through which process do chemicals move across synapses?

enter answer here...

#46. Do relay neurones and motor neurones have dendrons?

Sometimes

No

Yes

#47. What do we call the process by which farmers change the crops they grow each year to maintain nitrogen in the soil?

Harvest sequencing

Crop rotation

#48. Growth is increased during puberty. Why is this?

Sex hormones are not related to the increase in growth

Sex hormones are very similar to growth hormones and have the same effect

Sex hormones stimulate the release of growth hormone

#49. Name two resources that both animals and plants need to survive and reproduce? ? structure your answer like this: ..... and .....

enter answer here...

#50. Sometimes it is not possible to measure the number of organisms in a transect, for example when measuring the distribution of plants. In this case we use an alternative measure called what?

Average size of organisms

Percentage cover

#51. Which of these substances is sometimes added to water to make it potable?

lead

ice

chlorine

hydrogen

#52. The water cycle has one part where water is in solid form - what is that form of storage?

groundwater

clouds

oceans

glaciers and icesheets

#53. Motor neurones carry impulses to which part of the nervous system?

CNS

effectors

#54. Growth hormone stimulates cells in muscles and bones to divide. It also stimulates another system, which system is this?

digestive system - increased absorption of calcium

circulatory system - increase in breathing rate

#55. Is the following statement accurate: nitrogen be can be moved back and forth from the atmosphere and into the soil by bacteria.

No

Yes

#56. Increases in thyroxine concentration in the blood cause a decrease in the amount of thyroxine released. What kind of feedback mechanism is this?

Negative feedback

Postive feedback

#57. Where are nitrogen-fixing bacteria found in plants such as peas and beans?

In leaves

In root nodules

In the stem

#58. Which of the following descriptions best matches the hormonal system?

Acts quickly, but on specific parts of the body

Acts more slowly, but affects multiple parts of the body

#59. Why can humans only survive a few days without water?

water allows us to swallow our food

without water our mouths become too dry to speak

most of our body is made of water and it is continually lost to the environment

#60. Hormones are released by a range of glands, name one gland that releases hormones. ? do not include the word "gland" or "glands"

enter answer here...

#61. Which organisms maintain the nitrogen levels in the soil?

Decomposters

Recomposers

Decomposers

#62. What do we call an organ that is affected by a specific hormone?

A general organ

A stimulated organ

A target organ

#63. Fill in the gap: Receptors detect pain and send impulses via the sensory neurone towards the spinal cord. The ..................... intercepts the signal and diverts it along motor neurones to the effectors (muscles) which quickly move away from the source of pain.

CNS

PNS

relay neurone

#64. Why do we use systematic or random sampling of an area to determine the distribution or abundance of organisms?

The samples must be collected at random to make sure the same part of an area is sampled at least twice

Random sampling over and over again will eventually lead to samples of the entire area

The samples must be representative of the whole area to avoid bias

#65. What are nitrogen-fixing bacteria?

Bacteria that move nitrogen from the air into the soil

Bacteria that do not need any nitrogen to survive

Bacteria that are eaten as a source of nitrogen

#66. Which of these is a community?

Includes the local environment where an organism normally lives

Includes all of the individuals of a particular species in an environment

Includes all of the organisms in a particular environment as well as the environment itself

Includes all of the organisms that live in a particular environment

#67. Which of the following plants have a mutualistic relationship with nitrogen-fixing bacteria?

Select all that apply:

Tomatoes

Potatoes

Beans

Peas

#68. When an impulse reaches an axon terminal what happens?

a neurotransmitter substance is released into the gap, which is detected by the next neurone

the signal is not passed on from axon terminals

electricity jumps across the gap between neurones on to the next neurone

#69. Is the following statement accurate? Lightning can cause atmospheric nitrogen to be released into the rain and be washed into the soil?

Yes

No

#70. Which are the two kinds of sampling we normally use?

Select all that apply:

Random

Systematic

Chaotic

Complete

GCSE AQA Combined Science Trilogy Biology Paper 2

Good Luck!

Results

#1. Sensory neurones have a fatty layer of insulation, what is it called?

#2. Respiration from animals is a source of carbon dioxide in the atmosphere - do plant also use respiration?

#3. How do most plants get their nitrogen?

#4. What is the gap between neurones called?

#5. Which of the following is the source of coal?

#6. The Nervous System is made up of two parts, the Central Nervous System (CNS) and what other part?

#7. What is the name of the chemicals that we use to transmit messages through the blood to organs?

#8. Upon the release of adrenaline do blood vessels widen, narrow or both?

#9. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?

#10. By which process does water in the clouds move onto land?

#11. Which of these is an effector?

#12. Finish the sentence: Nitrogen compounds found in artificial fertilisers are ......... and dissolve in the soil's water.

#13. Match the description to the correct term. All of the individuals of a species that live in a particular woodland.

#14. Which of these is an effector?

#15. Which term do we use to describe the relationships between species that depend on each other for resources?

#16. Producers are organisms which do what?

#17. Which pathway is used when rapid automatic responses are needed by your body to external stimuli, like touching a hot object?

#18. What natural source of nitrogen is sometimes added to fields by farmers?

#19. What effect does adrenaline have on the liver?

#20. What do we mean by the distribution of organisms?

#21. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?

#22. What travels along neurones to pass information through the nervous system?

#23. Complete the equation used to calculate population size: population size = .............. x total size of it habitat / total area of quadrats

#24. What are two systems which allow your body to respond to its surroundings?

#25. Which of these processes allows saltwater to become potable?

#26. Why do plants need nitrogen?

#27. Match the description to the correct term. All of the organisms that live in a particular pond.

#28. Which of these is an ecosystem?

#29. Nitrogen is often found in a particular form in the soil what is this form?

#30. What is the role of effectors?

#31. How does nitrogen in plants get into the soil?

#32. When fossil fuels are burned they release carbon into the atmosphere - which of the following are fossil fuels?

#33. Why do plants need oxygen?

#34. What does potable water mean?

#35. When is adrenaline released?

#36. Which of these is a population?

#37. Which of the following is an effect stimulated by the thyroxine hormone?

#38. True or false - carbon dioxide is removed from the atmosphere as it dissolves in the oceans?

#39. We sometimes use a transect to perform systematic sampling. This involves which of the following?

#40. What do we call animals that eat both other animals and plants?

#41. Name one hormone that is released from the ovaries?

#42. Where does the water in lakes and rivers end up?

#43. What do we call animals that are eaten by other animals?

#44. How can we increase the accuracy of abundance estimates?

#45. Through which process do chemicals move across synapses?

#46. Do relay neurones and motor neurones have dendrons?

#47. What do we call the process by which farmers change the crops they grow each year to maintain nitrogen in the soil?

#48. Growth is increased during puberty. Why is this?

#49. Name two resources that both animals and plants need to survive and reproduce? ? structure your answer like this: ..... and .....

#50. Sometimes it is not possible to measure the number of organisms in a transect, for example when measuring the distribution of plants. In this case we use an alternative measure called what?

#51. Which of these substances is sometimes added to water to make it potable?

#52. The water cycle has one part where water is in solid form - what is that form of storage?

#53. Motor neurones carry impulses to which part of the nervous system?

#54. Growth hormone stimulates cells in muscles and bones to divide. It also stimulates another system, which system is this?

#55. Is the following statement accurate: nitrogen be can be moved back and forth from the atmosphere and into the soil by bacteria.

#56. Increases in thyroxine concentration in the blood cause a decrease in the amount of thyroxine released. What kind of feedback mechanism is this?

#57. Where are nitrogen-fixing bacteria found in plants such as peas and beans?

#58. Which of the following descriptions best matches the hormonal system?

#59. Why can humans only survive a few days without water?

#60. Hormones are released by a range of glands, name one gland that releases hormones. ? do not include the word "gland" or "glands"

#61. Which organisms maintain the nitrogen levels in the soil?

#62. What do we call an organ that is affected by a specific hormone?

#63. Fill in the gap: Receptors detect pain and send impulses via the sensory neurone towards the spinal cord. The ..................... intercepts the signal and diverts it along motor neurones to the effectors (muscles) which quickly move away from the source of pain.

#64. Why do we use systematic or random sampling of an area to determine the distribution or abundance of organisms?

#65. What are nitrogen-fixing bacteria?

#66. Which of these is a community?

#67. Which of the following plants have a mutualistic relationship with nitrogen-fixing bacteria?

#68. When an impulse reaches an axon terminal what happens?

#69. Is the following statement accurate? Lightning can cause atmospheric nitrogen to be released into the rain and be washed into the soil?

#70. Which are the two kinds of sampling we normally use?

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