Bio revision

The diagram shows some organisms living in water. Which process is carried out bu all the organisms shown?

• photosynthesis

• pollination

• respiration

• transpiration

What is defined as the chemical reactions that break down food molecules in cells to release energy?

• A excretion

• B movement

• C nutrition

• D respiration

The diagram shows an arthropod animal. Which features are characteristic of all arthropods?

• A jointed legs and segmented body

• B jointed legs and thorax

• C segmented body and wings

• D thorax and wings

Which row shows the most likely number of chloroplasts in three types of cell in a leaf?

• A

• B

• C

• D

The diagram shows some liver cells as they appear under the microscope. How many cell walls can be seen?

• 0

• 2

• 3

• 5

Which row shows the structures present in plant and animal cells?

• A

• B

• C

• D

Which structure is at a different level of organisation from the other three?

• A kidney

• B liver

• C neurone

• D testis

Which diagram shows one organ only?

• A

• B

• C

• D

On a dry, sunny day, how does water vapour move through the stomata of a leaf?

• A into the leaf by diffusion

• B into the leaf by osmosis

• C out of the leaf by diffusion

• D out of the leaf by osmosis

The graph shows how the rate of an enzyme-controlled reaction changes with temperature. What is happening within the temperature range marked X?

• A The enzyme is becoming denatured.

• B The enzyme is being used up.

• C The reaction is occurring at body temperature.

• D The reaction is occurring at the optimum temperature.