Regulation questions | form three Biology

When a person is frightened blood sugar concentration , rate of heart beat and rate of breathing increases due to a rise in blood level of

• Thyroxin
• Insulin
• Androgens
• Adrenaline
• Glucagon

Answer / Solution

UNSOLVED

During the cold weather shivering occurs in mammal`s body in order to

1. to shake off coldness
2. generate heat
3. produce sweat
4. relax the muscles
5. exercise the muscles

Answer / Solution

UNSOLVED

When it is cold, one of the following happens to keep the body warm.
A. hairs of the skin lie down flat
B. warm blood flows close to the skin
C. the metabolic rate decreases
D. the metabolic rate increases.

Answer / Solution

UNSOLVED

Which of the following activites take palce together in the skin?

1. Vasodilation, sweating and shivering
2. Vasodilation, contraction of hair erector muscle and shivering
3. Muscle constriction, contraction of hair erector muscle and sweating
4. Vasodilation, sweating and relaxation of hair erector muscle.

Answer / Solution

UNSOLVED

Briefly describe how mammals are able to keep each of the following at constant levels in their body fluids.

1. Glucose
2. Water

Answer / Solution

UNSOLVED