OCR Combined Science B Papers 4 and 8 Automock

#1. What is the function of plasma?

Carrying oxygen around the body via haemoglobin

Healing wounds by clotting the blood

Carrying dissolved substances around the body

Protecting the body from foreign cells

#2. A coil of wire with current flowing through it is an electromagnet. What else do we call a coil of wire?

A solenoid

A theodolite

A caliper

#3. Which description best describes mixtures?

contains more than one type of atoms, but not chemically bonded together

contains only a particular type of atoms

contains more than one type of atoms, chemically bonded together

#4. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?

At low temperatures particles exert a very slight repulsive force against each other, preventing the necessary reactions for photosynthesis.

At low temperatures particles are unable to react because they each need to be thermally activated which happens at 23˚C.

At low temperatures particles are moving slowly and collide less often. These collisions are necessary for reactions to take place, such as photosynthesis.

#5. What is the function of a fuse?

allows current to only flow one way

two or more cells in a circuit

provides variable resistance

provides a constant resistance

measures potential difference

releases light

gives power to a circuit

makes or breaks a circuit

measures current

safety component which can break a faulty circuit

#6. During electrolysis which electrode do anions and cations migrate to?

Anions to the cathode, cations to the anode

Anions to the anode, cations to the cathode

#7. Which of the following are waste products produced by the body?

Select all that apply:

Urea

Oxygen

Carbon dioxide

Proteins

#8. Complete the sentence. Power is the rate at which.....

Energy is destroyed

Energy is transferred

Energy is created

#9. In an equilibrium situation - the forces between two objects are?

converging

diverging

unequal

equal

#10. What is the role of the inferior vena cava?

Bringing blood to the heart from the upper body

Sending blood towards the lower body

Sending blood towards the upper body

Bringing blood to the heart from the lower body

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

Select all that apply:

Large leaves - bigger surface area

Leaves have stomata - for gaseous exchange

Flat leaves - reduces distance for diffusion of gases

Root hair cells are thin and very numerous - increasing surface area

Leaves retract inside stems overnight - avoiding water loss

Remember to carefully read the question, if you selected Root hair cells, you were mistaken because the question asked about leaves, not roots.

#12. If an object is moving in a circular path - what is happening to its velocity?

increasing over time

declining over time

constantly changing

constant

#13. Why is diamond hard?

Diamond is hard because carbon atom is covalently bonded to 4 other carbon atoms, in a tetrahedral arrangement.

Diamond is hard because it is made of ionically bonded carbon atoms.

Diamond is hard because it is composed of particular isotopes of carbon with extra neutrons, making the material more dense

#14. Which of the following descriptions matches the term molecular formula?

Is the sum of the relative atomic masses

Represents the simplest integer ratio of atoms or ions of each element in a compound

Represents the actual number of atoms of each element in a molecule

#15. True or false - x-rays have longer wavelengths than visible light?

true

false

#16. Which of the following can we use to investigate the effect of abiotic factors on the distribution of organisms?

A line or belt transect - sampling along a line (or around square) measuring both abundance and abiotic factors

Counting every individual of an entire community within an ecosystem

Single quadrats, placed in separate ecosystems

#17. What is the role of receptors?

interpret impulses

convert impulses into actions

detect changes in the environment

#18. What does μm stand for?

enter answer here...

#19. What is Newton's Second Law of Motion?

every action has an equal and opposite reaction

F = MA

objects in motion stay in motion and objects at rest stay at rest

#20. What is an active site?

the diameter of the area you can see through a microscope

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

a molecule that is changed during a reaction

#21. What are fossil fuels?

normal soil which is burned at a very high temperature

living plants that are burned

decomposed - crushed and heated organisms from millions of years ago

#22. What is this component?

enter answer here...

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

Interdependent

Codependent

Extradependent

Intradependent

#24. Calculate the change in height of the tennis ball in the following scenario. A ball weighs 0.15kg - the change in GPE is 100 J - the gravitational field strength is 10N/kg. Answer to 1dp and include units. ? If you do not know the GPE equation, it is listed below the quiz

enter answer here...

#25. Which of the following are weak acids?

Select all that apply:

ethanoic acid

sulfuric acid

boric acid

hydrochloric acid

nitric acid

carbonic acid

#26. What is the role of starch synthase?

synthesises glycogen from glucose

breaks down starch to small sugars such as maltose

breaks down proteins in the diet

breaks down fats in the diet

breaks down hydrogen peroxide made during cell reactions

synthesises DNA from its monomers

synthesises starch from glucose

#27. Which of the following are uses for magnets?

Select all that apply:

electric motors

measuring the melting points of different liquids

generators

confusing mice so they get lost in mazes

loudspeakers

checking food for excess radiation

#28. The table shows 3 substances and their melting points. What common substance, in particular, could substance Z be?

enter answer here...

#29. What is the chemical symbol for calcium?

enter answer here...

#30. Which of these is the mobile phase in paper chromatography?

the solvent

the paper

the ink

#31. How many sulfur atoms will react with two lithium atoms to form an ionic compound?

3

1

2

#32. What is the function of an ammeter?

measures potential difference

gives power to a circuit

measures current

#33. What do we call energy that is stored in hot objects?

enter answer here...

#34. What is the symbol for relative atomic mass?

Gᵣ

Aᵣ

Mᵣ

AMᵣ

#35. The drug called Digitalis slows the heart rate. Where does the drug come from?

Foxgloves

Bacteria

Fire ants

Oak trees

#36. What is the chemical symbol for chlorine?

enter answer here...

#37. What is amplitude?

the maximum displacement of a wave

how far from the equilibrium point the wave has oscillated

the number of waves passing a point each second

the time taken for a full oscillation

the distance of one entire oscillation

#38. Which form of radiation is least ionising?

gamma rays

beta particles

alpha particles

#39. Is oil a fossil fuel?

partially

yes

no

#40. What is the formula for sulfuric acid?

H₂SO₄

HCL

HNO₃

KOH

NaOH

Ca(OH)₂

#41. Oxygen is in group 6 and fluorine is in group 7. How many fluorine atoms bond with one oxygen atom?

enter answer here...

#42. What does E represent in the equation for work done?

Distance moved

Power

Work done

Elasticity

#43. When a substance changes from a solid to a liquid, what happens to the mass?

The mass increases

The mass decreases

The mass stays the same

Stays the same because there has been no change in the number of particles. We say that the mass has been conserved.

#44. Are non-metals usually malleable or brittle?

Brittle

Malleable

#45. What are the three domains?

Animals, Plants and Bacteria

Eurkarya, Fungi and Bacteria

Bacteria, Archaea, and Eukarya

#46. During a neutralisation reaction which salt is formed from hydrochloric acid?

borate

nitrate

carbonate

sulfate

chloride

#47. Using the equation F = MA - calculate the force of a ball with a mass of 15kg that is accelerated at 2m/s²?

3 Newtons

30 Newtons

10 Newtons

360 Newtons

#48. How do crumple zones and airbags in cars protect people inside the car in a crash?

Reducing the size of the deceleration and the forces experienced by the body

Making the crash louder, attracting attention so emergency services arrive sooner

Pushing the driver into the seat so they are safe from flying glass

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

CNS

CFS

effectors

#50. Are gases fluids?

No

Yes

#51. Determine the empirical formula for Cyclopentane - C₅H₁₀?

CH₂

CH₄

2CH

C₂H₂

#52. This image shows Flemming's Left Hand Rule. Which of the following answers are the correct interpretations of the rule? ? Select three answers, one for each finger

The index finger shows the direction of the magnetic field

The thumb shows the direction of the magnetic field

The middle finger shows the direction of the force

The middle finger shows the direction of the current

The index finger shows the direction of the current

The thumb shows the direction of the force

#53. Which of the following are commonly used as methods of sterilising fresh water? ? 3

Select all that apply:

UV treatment

alpha particle treatment

chlorination

ozonation

#54. The diagram shows a solenoid. Why is the magnetic field stronger along the centre of the coil than on the outside? ? Select two answers

Select all that apply:

The fields on the inside are stronger due to the nanoelectric effects of electromagnetic induction

The fields of the outside are weaker due to the greater potential difference at the centre of the wires in the coil

The fields cancel out to give a weaker field on the outside

The fields add together in the centre and become nearly uniform and strong

#55. Determine the empirical formula of glucose - C₆H₁₂O₆.

C₂OH

CHO₂

C₂H₂O

CH₂O

#56. What is happening to the speed of the object in the graph between 0 and 8 seconds?

Deceleration

Acceleration

No change

#57. When there are more frequent collisions between particles, what will happen to the rate of reaction?

It will stay the same

It will increase

It will decrease

#58. Complete the equation for weight. W = m x ........

Gravitational field strength

Time

Speed

Momentum

#59. Which of the following is the correct equation for momentum?

momentum (kg m/s) = mass (kg) / velocity (m/s) [p=m/v]

momentum (kg m/s) = mass (kg) × velocity (m/s) [p=m×v]

momentum (kg m/s) = mass (kg) × time (s) [p=m×t]

momentum (kg m/s) = weight (N) × velocity (m/s) [p=w×v]

#60. What are cells that line structures in the body and have cilia?

epithelial cells

chitinous cells

zygotic cells

ciliated epithelial cells

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

Bringing blood from the lower body

Sending blood around the body

Bringing blood from the upper body

Sending blood to the lungs

#62. A train is travelling at 45 miles per hour. The driver puts on the brakes in order to stop at the station. Where is the kinetic energy of the train being transferred to?

Nuclear energy in the rocks below the tracks

Thermal energy in the brakes

Kinetic energy in the rails

#63. In which type of reaction would the temperature of a solution increase?

Exothermic

Endothermic

Mesothermic

Ectothermic

#64. The 5 kingdoms of life are Animals, Plants, Fungi, Protists and Prokaryotes. Which kingdom do algae belong to?

enter answer here...

#65. 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 one quadrat x total size of 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 all quadrats x total size of community / total area of quadrats

#66. What is the molecular formula for glucose?

CO₆

CH₄

C₆H₁₂O₆

#67. Is active transport an active or a passive process?

active

passive

#68. What is the charge of a proton?

+1

-1

0

#69. True or false - electromagnetic waves travel at different speeds in different materials?

False

True

#70. What is the chemical symbol for phosphorus?

enter answer here...

#71. What do we call the boundary between two different mediums?

The interface

The outerface

The refractionary line

#72. 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.

#73. Determine the empirical formula for Cyanuric triazide - C₃N₁₂.

C₂N₄

C₄N₄

CN

CN₄

#74. What method can we use to separate multiple types of liquids?

enter answer here...

#75. Solutions of pH 7 are?

acidic

alkaline

neutral

GCSE OCR Combined Science B Papers 1 and 5

Good Luck!

Results

#1. What is the function of plasma?

#2. A coil of wire with current flowing through it is an electromagnet. What else do we call a coil of wire?

#3. Which description best describes mixtures?

#4. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?

#5. What is the function of a fuse?

#6. During electrolysis which electrode do anions and cations migrate to?

#7. Which of the following are waste products produced by the body?

#8. Complete the sentence. Power is the rate at which.....

#9. In an equilibrium situation - the forces between two objects are?

#10. What is the role of the inferior vena cava?

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

#12. If an object is moving in a circular path - what is happening to its velocity?

#13. Why is diamond hard?

#14. Which of the following descriptions matches the term molecular formula?

#15. True or false - x-rays have longer wavelengths than visible light?

#16. Which of the following can we use to investigate the effect of abiotic factors on the distribution of organisms?

#17. What is the role of receptors?

#18. What does μm stand for?

#19. What is Newton's Second Law of Motion?

#20. What is an active site?

#21. What are fossil fuels?

#22. What is this component?

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

#24. Calculate the change in height of the tennis ball in the following scenario. A ball weighs 0.15kg - the change in GPE is 100 J - the gravitational field strength is 10N/kg. Answer to 1dp and include units. ? If you do not know the GPE equation, it is listed below the quiz

#25. Which of the following are weak acids?

#26. What is the role of starch synthase?

#27. Which of the following are uses for magnets?

#28. The table shows 3 substances and their melting points. What common substance, in particular, could substance Z be?

#29. What is the chemical symbol for calcium?

#30. Which of these is the mobile phase in paper chromatography?

#31. How many sulfur atoms will react with two lithium atoms to form an ionic compound?

#32. What is the function of an ammeter?

#33. What do we call energy that is stored in hot objects?

#34. What is the symbol for relative atomic mass?

#35. The drug called Digitalis slows the heart rate. Where does the drug come from?

#36. What is the chemical symbol for chlorine?

#37. What is amplitude?

#38. Which form of radiation is least ionising?

#39. Is oil a fossil fuel?

#40. What is the formula for sulfuric acid?

#41. Oxygen is in group 6 and fluorine is in group 7. How many fluorine atoms bond with one oxygen atom?

#42. What does E represent in the equation for work done?

#43. When a substance changes from a solid to a liquid, what happens to the mass?

#44. Are non-metals usually malleable or brittle?

#45. What are the three domains?

#46. During a neutralisation reaction which salt is formed from hydrochloric acid?

#47. Using the equation F = MA - calculate the force of a ball with a mass of 15kg that is accelerated at 2m/s²?

#48. How do crumple zones and airbags in cars protect people inside the car in a crash?

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

#50. Are gases fluids?

#51. Determine the empirical formula for Cyclopentane - C₅H₁₀?

#52. This image shows Flemming's Left Hand Rule. Which of the following answers are the correct interpretations of the rule? ? Select three answers, one for each finger

#53. Which of the following are commonly used as methods of sterilising fresh water? ? 3

#54. The diagram shows a solenoid. Why is the magnetic field stronger along the centre of the coil than on the outside? ? Select two answers

#55. Determine the empirical formula of glucose - C₆H₁₂O₆.

#56. What is happening to the speed of the object in the graph between 0 and 8 seconds?

#57. When there are more frequent collisions between particles, what will happen to the rate of reaction?

#58. Complete the equation for weight. W = m x ........

#59. Which of the following is the correct equation for momentum?

#60. What are cells that line structures in the body and have cilia?

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

#62. A train is travelling at 45 miles per hour. The driver puts on the brakes in order to stop at the station. Where is the kinetic energy of the train being transferred to?

#63. In which type of reaction would the temperature of a solution increase?

#64. The 5 kingdoms of life are Animals, Plants, Fungi, Protists and Prokaryotes. Which kingdom do algae belong to?

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

#66. What is the molecular formula for glucose?

#67. Is active transport an active or a passive process?

#68. What is the charge of a proton?

#69. True or false - electromagnetic waves travel at different speeds in different materials?

#70. What is the chemical symbol for phosphorus?

#71. What do we call the boundary between two different mediums?

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

#73. Determine the empirical formula for Cyanuric triazide - C₃N₁₂.

#74. What method can we use to separate multiple types of liquids?

#75. Solutions of pH 7 are?

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