GCSE OCR Biology B Paper 1 E-Mock Automarked

#1. Which of these is a population?

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

Includes the local environment where an organism normally lives

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

#2. Why is the rate of an enzyme controlled reaction lower at lower temperatures?

at low temperatures enyzmes close up their active sites and do not accept substrates

at low temperatures enzymes and substrates are moving slowly and are less likely to meet

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

Predators

Prey

#4. What is the process by which organisms remove waste from their bodies?

enter answer here...

#5. Which of these is a habitat?

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 all of the individuals of a particular species in an environment

Includes the local environment where an organism normally lives

#6. What is the resolution of light microscopes limited by?

The strength of magnification

The size of the mirror/intensity of the light source

The wavelength of visible light

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

Widen

Narrow

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.

#8. What is the name of the protein which moves particles across cell membranes during active transport?

enter answer here...

#9. What is the Lock and Key Model of enzyme action?

the active site and substrate do not fit exactly together but the shape changes as they come together

the active site changes to fit with new substrates over its lifetime

the active site and the substrate fit exactly together

the active site is not related to enzyme action

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

enamel layer

chitinous brief

myelin sheath

1

#11. Palisade cells are found just below the epidermis of leaves. What is their role and how are they adapted to perform it?

photosynthesis - they contain lots of chloroplasts

plant protection - they contain lots of mitochrondria

making proteins - they contain lots of ribosomes

#12. Which system is responsible for ensuring the supply of oxygen and glucose to cells?

Immune System

Circulatory System

Nervous System

#13. What is enzyme specificity?

describes the ability of an enzyme to catalyse only a particular reaction or set of reactions

the efficiency of an enzyme in catalysing reactions

the active site changes to fit with new substrates over its lifetime

#14. Where does blood from the pulmonary artery travel to?

The lungs

The rest of the body

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

Interdependent

Codependent

Intradependent

Extradependent

#16. What are cilia?

branching structures like root hair cells which reach for nutrients in the large intestine

hair like cells that beat rhythmically to move substances

fertilised egg cells

#17. Bacterial cells commonly have a flagellum. What is the role of this structure?

Protein synthesis

Protection

Supporting the cell

Photosynthesis

Movement

#18. What does abundance measure?

The average size of organisms in a population

The number of individuals or frequency of occurrence in an area

The average number of different species within a community

#19. What is meant by an active process?

the process requires energy and it happens on its own

the process does not require energy and it is automatic

the process requires energy and does not happen on its own

#20. Which of the following is part of the central nervous system (CNS)?

receptors

spinal cord

receptor-effector system

sensory neurones

#21. What is the word equation for photosynthesis? ? In some examples you might also see sunlight and chlorophyll above and below the arrow.

carbon dioxide + water → glucose + oxygen

carbon monoxide + water → glucose + oxygen

silicon dioxide + water → glucose + oxyen

#22. In which part of the cell does anaerobic respiration take place?

Ribosomes

Cytoplasm

Mitochondria

#23. Oxygen enters the body via the?

Lungs

Heart

Brain

#24. Capillaries are only one cell thick and have thousands of branches. What is the function of capillaries?

Moving oxygenated blood towards the heart from the lungs

Exchanging molecules between the blood and other organs via diffusion

#25. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?

enter answer here...

#26. What is an active site?

the diameter of the area you can see through a microscope

a molecule that is changed during a reaction

A specific region on an enzyme where the substrate binds and the reaction takes place

#27. Which of the following is part of the central nervous system (CNS)?

brain

motor neurones

relay neurones

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

nuclear fuels

peat

wind

#29. Which square instrument do we use for randomly sampling population sizes?

enter answer here...

#30. Which type of factor is disease?

Biotic

Inbiotic

Abiotic

Sub-biotic

#31. Why does the rate of an enzyme controlled reaction increase with greater substrate concentration?

The rate of reaction increases because higher substrate concentration leads to warmer temperatures

The rate of reaction does not increase

The rate of reaction increases because there are available active sites, so more reactions take place

#32. 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.

relay neurone

CNS

PNS

#33. Anaerobic respiration does not involve oxygen. Select the correct word equation for anaerobic respiration.

glucose → lactic acid

oxygen + glucose → lactic acid

lactic acid → glucose

methane + glucose → lactic acid

#34. True or false - A concentration gradient is the difference in concentration from high to low?

false

true

#35. What is the function of the cell wall?

Provide strength and support

Photosynthesis

Provides no function

Cellular respiration

Protein synthesis

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

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

water allows us to swallow our food

#37. How much of the atmosphere is composed of nitrogen?

approximately 80%

approximately 10 %

approximately 50%

#38. What are the upper chambers of the heart called?

The ventricles

The atria

The valves

The septums

#39. What is the heart rate measured in?

Beats/min

Beats/sec

Beats/hour

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

distillation

precipitation

filtration

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

dead and buried plant material from millions of years ago

nuclear decay from millions of years ago

dead plankton from millions of years ago

#42. Is respiration an exothermic or an endothermic reaction?

Endothermic

Exothermic

#43. When is adrenaline released?

When you are relaxed

When you are sleeping

When you are scared or excited

After a meal

#44. Place the measurement units in order from from biggest to smallest. micrometres, picometres, kilometres, metres, nanometres, millemetres ? Use British Spelling - Metres* NOT Meters

enter answer here...

#45. What is the role of DNA synthase?

breaks down fats in the diet

breaks down proteins in the diet

breaks down hydrogen peroxide made during cell reactions

synthesises starch from glucose

synthesises glycogen from glucose

breaks down starch to small sugars such as maltose

synthesises DNA from its monomers

#46. What is the part of the heart that the arrows are pointing to?

The pulmonary vein

The left atrium

The pulmonary artery

The vena cava

The right atrium

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

photons

chemicals

protons

electrical signals

#48. What is the gap between neurones called?

enter answer here...

#49. What is the role of amylase?

breaks down hydrogen peroxide made during cell reactions

breaks down proteins in the diet

synthesises starch from glucose

breaks down fats in the diet

synthesises DNA from its monomers

synthesises glycogen from glucose

breaks down starch to small sugars such as maltose

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

A general organ

A stimulated organ

A target organ

#51. Why is there a size limit to cells?

Larger cells than the size limit cannot get substances they need to where they need them

Larger cells than the size limit are not able to hold themselves together due to the static pressure associated with larger size

#52. What are enzymes?

building blocks of the basic macromolecules of life

a molecule that is changed during a reaction

the process by which plant cells get longer/bigger

the movement of particles across a membrane against the concentration gradient

proteins which act as biological catalysts

#53. Which of the following describes metabolic rate?

The average growth rate over 14 days

The rate at which energy from food is consumed by your body

The rate at which blood leaves the aorta

#54. Who invented the binomial naming system?

Carl Woese

Carl Linnaeus

James Brown

Uh oh, maybe you need some lessons!

#55. In active transport - are particles travelling with or against the concentration gradient?

with

against

#56. How are cells that line the small intestine specialised?

contain microvilli which increase the surface area and nutrient absorption

contain macrovilli to speed the flow of waste through the intestine

#57. What is the role of ribosomes?

Making bad jokes

Protein synthesis

Photosynthesis

Anaerobic respiration

#58. What is the function of white blood cells?

Protecting the body from foreign cells

Carrying oxygen around the body via haemoglobin

Carrying dissolved substances around the body

Healing wounds by clotting the blood

#59. What is the cell wall made from in plants?

enter answer here...

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

enter answer here...

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

Select all that apply:

Systematic

Random

Chaotic

Complete

#62. How many chambers does the heart have?

2

4

1

3

#63. During exercise, your cells require more oxygen and glucose. What changes in the body happen during exercise to meet these increased needs?

Select all that apply:

Increased breathing rate

Increased digestion rate of lipids

Increased heart rate

#64. What is the molecular formula for glucose?

CO₆

C₆H₁₂O₆

CH₄

#65. What is the role of glycogen synthase?

breaks down hydrogen peroxide made during cell reactions

breaks down proteins in the diet

breaks down starch to small sugars such as maltose

breaks down fats in the diet

synthesises glycogen from glucose

synthesises starch from glucose

synthesises DNA from its monomers

#66. What is the equation for magnification?

magnifcation = image size/actual size

Magnification = objective lens x image size

magnification = actual size/image size

There are two equations for magnification, both tell you how many times larger the image appears than it actually is.

One equation links the magnification of the two lenses and the other equation links magnification to the size of the object and image.

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

Select all that apply:

Tomatoes

Beans

Peas

Potatoes

#68. What are biotic factors?

Factors which affect the ability of scientists to sample the environment - leading to errors in measurements

Physical and chemical environmental factors which affect the distribution and abundance of organisms

Biological environmental factors which affect the distribution and abundance of organisms

#69. What is the difference between aerobic and anaerobic respiration?

Aerobic respiration produces glucose as a byproduct, anaerobic produces lactic acid

Aerobic includes oxygen, anaerobic doesn't include oxygen

Aerobic happens only in fungi and anaerobic happens only in animals

#70. What is the resolution of electron microscopes limited by?

the wavelength of electrons

the wavelength of infrared light

the magnification x width of the eyepiece

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

Community

Population

Ecosystem

Habitat

#72. What is the function of red blood cells (Erythrocytes)?

Carrying oxygen around the body via haemoglobin

Healing wounds by clotting the blood

Protecting the body from foreign cells

Carrying dissolved substances around the body

#73. By which process does water in the atmosphere become part of clouds?

sublimation

distillation

precipitation

evaporation

condensation

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

Causes the breakdown of glycogen to release glucose

Causes a spike in growth hormone

Causes a decrease in blood sugar concentration

#75. True or false - plants remove carbon from the atmosphere during photosynthesis

true

false

#76. What is the purpose of respiration?

To break down chlorophyll

To make glucose

Provide energy to the cells

#77. Is osmosis an active or a passive process?

active

passive

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

hydrogen

ice

chlorine

lead

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

In the stem

In leaves

In root nodules

#80. Which type of factor is competition?

Abiotic

Sub-biotic

Inbiotic

Biotic

#81. Which type of factor is soil composition?

Biotic

Inbiotic

Abiotic

Sub-biotic

#82. What is the role of the superior vena cava?

Bringing blood from the upper body

Sending blood around the body

Bringing blood from the lower body

Sending blood to the lungs

#83. Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?

Select all that apply:

Chloroplasts migrate back into the stems overnight - protects them from cold weather

Palisade layer filled with chloroplasts is just below the epidermis - maximising light intensity

Guard cells open and close stomata - control water loss

Guard cells open and close the entrance to leaves from stems - isolates infected leaves

Transparent epidermis - allows sunlight to travel straight into the leaves

#84. Which of these are examples of blood vessels?

Select all that apply:

Veins

Arteries

Ventricles

Capillaries

#85. How many chromosomes does a single sperm cell have?

enter answer here...

#86. Which of the following are strategies organisms use to adapt to changing abiotic conditions?

Select all that apply:

Eating less food

Changing diet

Moving to new areas

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

oceans

clouds

#88. Where are relay neurones found?

spinal cord

in the liver

inside glands

lower body

#89. What is an advantage of anaerobic respiration?

It is very efficient at generating energy

It can provide energy very quickly without the need for oxygen

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

Ecosystem

Population

Habitat

Community

GCSE OCR Biology B Paper 1

Good Luck!

Results

#1. Which of these is a population?

#2. Why is the rate of an enzyme controlled reaction lower at lower temperatures?

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

#4. What is the process by which organisms remove waste from their bodies?

#5. Which of these is a habitat?

#6. What is the resolution of light microscopes limited by?

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

#8. What is the name of the protein which moves particles across cell membranes during active transport?

#9. What is the Lock and Key Model of enzyme action?

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

#11. Palisade cells are found just below the epidermis of leaves. What is their role and how are they adapted to perform it?

#12. Which system is responsible for ensuring the supply of oxygen and glucose to cells?

#13. What is enzyme specificity?

#14. Where does blood from the pulmonary artery travel to?

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

#16. What are cilia?

#17. Bacterial cells commonly have a flagellum. What is the role of this structure?

#18. What does abundance measure?

#19. What is meant by an active process?

#20. Which of the following is part of the central nervous system (CNS)?

#21. What is the word equation for photosynthesis? ? In some examples you might also see sunlight and chlorophyll above and below the arrow.

#22. In which part of the cell does anaerobic respiration take place?

#23. Oxygen enters the body via the?

#24. Capillaries are only one cell thick and have thousands of branches. What is the function of capillaries?

#25. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?

#26. What is an active site?

#27. Which of the following is part of the central nervous system (CNS)?

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

#29. Which square instrument do we use for randomly sampling population sizes?

#30. Which type of factor is disease?

#31. Why does the rate of an enzyme controlled reaction increase with greater substrate concentration?

#32. 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.

#33. Anaerobic respiration does not involve oxygen. Select the correct word equation for anaerobic respiration.

#34. True or false - A concentration gradient is the difference in concentration from high to low?

#35. What is the function of the cell wall?

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

#37. How much of the atmosphere is composed of nitrogen?

#38. What are the upper chambers of the heart called?

#39. What is the heart rate measured in?

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

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

#42. Is respiration an exothermic or an endothermic reaction?

#43. When is adrenaline released?

#44. Place the measurement units in order from from biggest to smallest. micrometres, picometres, kilometres, metres, nanometres, millemetres ? Use British Spelling - Metres* NOT Meters

#45. What is the role of DNA synthase?

#46. What is the part of the heart that the arrows are pointing to?

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

#48. What is the gap between neurones called?

#49. What is the role of amylase?

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

#51. Why is there a size limit to cells?

#52. What are enzymes?

#53. Which of the following describes metabolic rate?

#54. Who invented the binomial naming system?

#55. In active transport - are particles travelling with or against the concentration gradient?

#56. How are cells that line the small intestine specialised?

#57. What is the role of ribosomes?

#58. What is the function of white blood cells?

#59. What is the cell wall made from in plants?

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

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

#62. How many chambers does the heart have?

#63. During exercise, your cells require more oxygen and glucose. What changes in the body happen during exercise to meet these increased needs?

#64. What is the molecular formula for glucose?

#65. What is the role of glycogen synthase?

#66. What is the equation for magnification?

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

#68. What are biotic factors?

#69. What is the difference between aerobic and anaerobic respiration?

#70. What is the resolution of electron microscopes limited by?

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

#72. What is the function of red blood cells (Erythrocytes)?

#73. By which process does water in the atmosphere become part of clouds?

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

#75. True or false - plants remove carbon from the atmosphere during photosynthesis

#76. What is the purpose of respiration?

#77. Is osmosis an active or a passive process?