Biology Quiz on Reflexes and Responses

What is the sequence of nerve cells through which an impulse passes during a reflex action from the first to the last that respond?

• P-Q-R

• Q-R-P

• Q-P-R

• R-P-Q

Which structures could be found at X and Y?

• X gland Y spinal cord

• X spinal cord Y gland

What will be the effect of strenuous exercise on the volume of water lost through the skin and the kidneys?

Type your answer with full sentences:

volume of water lost through the skin _______and kidney _________

Which structure controls how much light enters the pupil?

• retina

• cornea

• iris

• sclera

What is the sequence in which impulses pass through these structures?

• P → S → R → Q

• Q → R → S → P

• Q → P → R → S

• S → P → Q → R

Which part of the human eye is sensitive to light?

• iris

• lens

• optic nerve

• retina

Why do mammals sweat?

• to cool the body

• to lose water vapour through the skin surface

• to release energy through the oxidation of glucose

• to remove glucose from the blood

When a person looks at an object which is far away from their eye, which of the following happens?

• suspensory ligament pulled tight and lens getting thinner

• suspensory ligament slacken and lens getting thinner

• suspensory ligament pulled tight and lens getting thicker

• suspensory ligament slacken and lens getting thicker

X is a contracted ciliary muscle.

X is a contracted ciliary muscle..

What will happen when it relaxes?

• The lens will decrease its curvature.

• The lens will increase its curvature.

• The size of the pupil will decrease.

• The size of the pupil will increase.

What happens to the muscles as the weight is lowered?