Paper 4 practice EOS2

Paper 4 practice EOS2

Multiple Select

Which structure(s) in the eye contain light receptor cells?

• Iris

• Retina

• Optic nerve

• Cornea

Multiple Select

Which structure in the eye refract light?

• Cornea

• Iris

• Pupil

• Retina

Multiple Select

Which statements correctly describe the eye on the left (Fig 4.1a)?

• Radial muscles are relaxed

• Radial muscles are contracted

• Circular muscles are relaxed

• Circular muscles are contracted

• Pupil is dilated

Fill in the Blanks

Which structure is circled in red?

Multiple Choice

Excess glucose in the bloodstream is converted to which other substance when stored in the liver and muscle cells?

• glygogen

• glucagon

• glycerin

• glycerol

Multiple Choice

What chemical reaction happens in the mitochondria that releases thermal energy?

• Anaerobic respiration

• Aerobic respiration

• Hydrolysis reaction

• condensation reaction

Multiple Choice

In these experiments what responses have the shoots shown?

• Positive phototropism and positive gravitropism

• Negative phototropism and positive gravitropism

• Positive phototropism and negative gravitropism

• Negative phototropism and negative gravitropism

Multiple Choice

What are the effects of insulin and glucagon on the concentration of blood glucose?

• A

• B

• C

• D

Multiple Choice

The hormone auxin has what effect on plant cells in the shoot tips of plants?

• Makes them grow longer

• Prevents them from growing

• Makes them move to the dark side

• Negative phototropism

Multiple Choice

What substance can glucose be converted into, which is the energy storage carbohydrate of plants?

• cellulose

• sucrose

• amino acids

• starch

Multiple Choice

Which of the following shows the balanced chemical symbol equation for photosynthesis?

• A

• B

• C

• D

Multiple Choice

What are the products of anaerobic respiration?

• Glucose and oxygen
• Carbon dioxide and water
• Lactic acid
• Carbon monoxide

Multiple Choice

During exhalation, what will happen to these respiratory organs?

• Diaphragm moves downward and flatten

• Rib cage moves upwards and outwards

• intercostal muscles relax

• Intercostal muscles contract

Multiple Choice

The composition of the oxygen in inhaled air is

• 21%

• 16%

• 4%

• 0.04%

Open Ended

State the three uses of energy in the human body

Open Ended

Describe the role of the liver in the recovery from oxygen debt after strenuous exercise. [2]

Open Ended

State two features of animal and plant cells that are not found in prokaryotes.

Open Ended

Explain the importance of regulating body temperature in humans. [4]

Open Ended

Capsaicin is a compound that gives people the sensation of feeling hot when it is put on the skin. Researchers applied capsaicin to the skin of the volunteers and again measured the blood flow through their skin at different temperatures.

Use the information in Fig. 4.2 to describe the effect of increasing the temperature of the skin surface on blood flow to

the skin without capsaicin.