S2 Biology revision (all topics)

Which process involves the release of energy from food substances in all living cells?

• breathing

• nutrition

• respiration

• digestion

Tags

NGSS.MS-LS1-7

What is an example of osmosis?

• Carbon dioxide goes out through the stomata of a leaf.

• Digested food is absorbed from the small intestine.

• Oxygen goes into the blood from an alveolus.

• Water enters a plant root from the soil.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The diagram shows an experiment on diffusion. More sugar diffuses out of the bag than diffuses in.

What is the concentration of sugar in solution X?

• 10%

• 20%

• 30%

• 40%

The temperature of an enzyme-controlled reaction is increased by 10°C.

How does this affect the rate of reaction?

• It always increases the rate.

• It always decreases the rate.

• It may increase or decrease the rate.

• It has no effect on the rate.

Tags

NGSS.HS-LS1-3

Which elements do carbohydrates contain?

• carbon, hydrogen and oxygen

• carbon, hydrogen and sulfur

• carbon, nitrogen and oxygen

• carbon, nitrogen and sulfur

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

• The enzyme is becoming denatured.

• Fewer collisions are happening.

• The substrate fits into the active site.

• The reaction is occurring at the optimum temperature.

What is structure Z

• Nucleus

• Cell membrane

• Cytoplasm

• Vacuole

Which row correctly shows the what is produced during aerobic respiration?

• A

• B

• C

• D

Which row correctly describes anaerobic respiration in yeast?

• A

• B

• C

• D

What is the word equation for anaerobic respiration in bacteria and muscle cells?

• glucose ---> Lactic acid

• glucose + oxygen ---> carbon dioxide + water

• glucose ---> Ethanol and carbon dioxide

• glucose + water ---> carbon dioxide + oxygen