#1. Decomposers break down dead animal and plant material - what happens to the carbon inside the dead organisms?

all of the carbon becomes part of the decomposers

part of the carbon is released during respiration and part is stored in the composers cells

all of the carbon is released during respiration

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

groundwater

glaciers and icesheets

oceans

clouds

#3. 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

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

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

All plants release nitrogen into the soil as they grow

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

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

enter answer here...

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

Select all that apply:

Skeletal system

Hormonal system

Nervous system

Muscular system

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

enter answer here...

#8. 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

relay neurone

PNS

#9. Resting metabolic rate is measured under which of the following conditions?

Select all that apply:

In a warm room

In a cold room

Just after eating a meal

Body at rest

Long after eating a meal

#10. What does potable water mean?

you cannot drink it safely

you can put it in a pot

you can drink it safely

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

Cellular respiration

Provides no function

Photosynthesis

Provide strength and support

Protein synthesis

#12. What is the role of catalase?

breaks down proteins in the diet

synthesises DNA from its monomers

synthesises starch from glucose

breaks down fats in the diet

breaks down starch to small sugars such as maltose

breaks down hydrogen peroxide made during cell reactions

synthesises glycogen from glucose

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

peat

nuclear fuels

wind

#14. Cardiac output is measured as the volume of blood pushed through the aorta each minute. Which is the correct equation for cardiac output?

Cardiac output = blood viscosity x heart rate / stroke volume

Cardiac output = stroke volume / heart rate

Cardiac output = stroke volume x heart rate

#15. What is the gap between neurones called?

enter answer here...

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

enter answer here...

#17. Through which process would air in a space station move if someone opened a door to space?

diffusion

active transport

osmosis

#18. Why is the binomial naming system useful for scientists?

Makes scientists feel important

Clearly identifies individual species

Most people speak latin

#19. Surfaces where diffusion takes place allowing substances to enter the body usually have which characteristics?

Select all that apply:

They have a small surface area - increasing the pressure of diffusion (amount diffused = pressure x flow rate)

They are thin - allowing a short distance for diffusion

They have a large surface area - increasing the area where substances can diffuse

They are thick - causing a one way pressure that assists efficient diffusion

#20. Through which process would air freshener sprayed in one corner of a room disperse?

active transport

osmosis

diffusion

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

true

false

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

false

true

#23. Glucose enters the body via the?

Lungs

Small intestine

Brain

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

Where organisms are found

How many organisms there are in one quadrat

The composition of species within a community

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

contain macrovilli to speed the flow of waste through the intestine

contain microvilli which increase the surface area and nutrient absorbtion

#26. 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

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

Movement

Photosynthesis

Protection

Supporting the cell

Protein synthesis

#28. What is the role of the central nervous system (CNS)?

convert impulses into actions

detect impulses

interpret impulses and coordinate responses

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

Fire ants

Oak trees

Foxgloves

Bacteria

#30. What are substrates?

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

proteins which act as biological catalysts

the movement of particles across a membrane against the concentration gradient

#31. Who invented the binomial naming system?

Carl Linnaeus

James Brown

Carl Woese

Uh oh, maybe you need some lessons!

#32. How do substances typically move into and out of the body, for example, oxygen in the lungs? ? 1 word answer

enter answer here...

#33. Which of these is an ecosystem?

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 all of the organisms that live in a particular environment

Includes the local environment where an organism normally lives

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

CNS

effectors

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

Bringing blood to the heart from the upper body

Sending blood towards the upper body

Bringing blood to the heart from the lower body

Sending blood towards the lower body

#36. What is the heart rate measured in?

Beats/min

Beats/sec

Beats/hour

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

the wavelength of infrared light

the magnification x width of the eyepiece

the wavelength of electrons

#38. 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?

Percentage cover

Average size of organisms

#39. What is stroke volume measured in?

enter answer here...

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

precipitation

filtration

distillation

#41. In which sub-cellular structure inside plant cells does photosynthesis occur?

enter answer here...

#42. What do we call animals that only eat plants?

enter answer here...

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

Select all that apply:

Proteins

Urea

Carbon dioxide

Oxygen

#44. 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

#45. Which process in the body produces carbon dioxide?

Digestion

Anaerobic respiration

Aerobic respiration

Photosynthesis

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

Crop rotation

Harvest sequencing

#47. Why does the rate of an enzyme controlled reaction go down as temperature increases past the optimum level?

high temperatures cause denaturation - changing the shape of the active site

high temperatures cause the substrate to dissolve

high temperatures cause the substrate to move too quickly to find an enzyme

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

The right atrium

The pulmonary vein

The vena cava

The left atrium

The pulmonary artery

#49. What is enzyme activity?

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

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

the efficiency of an enzyme in catalysing reactions

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

active

passive

GCSE Biology Quiz

Good Luck!

Results

#1. Decomposers break down dead animal and plant material - what happens to the carbon inside the dead organisms?

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

#3. What is an active site?

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

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

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

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

#8. 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.

#9. Resting metabolic rate is measured under which of the following conditions?

#10. What does potable water mean?

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

#12. What is the role of catalase?

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

#14. Cardiac output is measured as the volume of blood pushed through the aorta each minute. Which is the correct equation for cardiac output?

#15. What is the gap between neurones called?

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

#17. Through which process would air in a space station move if someone opened a door to space?

#18. Why is the binomial naming system useful for scientists?

#19. Surfaces where diffusion takes place allowing substances to enter the body usually have which characteristics?

#20. Through which process would air freshener sprayed in one corner of a room disperse?

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

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

#23. Glucose enters the body via the?

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

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

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

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

#28. What is the role of the central nervous system (CNS)?

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

#30. What are substrates?

#31. Who invented the binomial naming system?

#32. How do substances typically move into and out of the body, for example, oxygen in the lungs? ? 1 word answer

#33. Which of these is an ecosystem?

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

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

#36. What is the heart rate measured in?

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

#38. 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?

#39. What is stroke volume measured in?

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

#41. In which sub-cellular structure inside plant cells does photosynthesis occur?

#42. What do we call animals that only eat plants?

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

#44. Why do plants need nitrogen?

#45. Which process in the body produces carbon dioxide?

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

#47. Why does the rate of an enzyme controlled reaction go down as temperature increases past the optimum level?

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

#49. What is enzyme activity?

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

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