Question

The build-up of lactic acid in muscles can lead to:
a. Cramps
b. Muscle wasting
c. Fatigue
d. Muscle pain
Breathing is controlled by which organ/gland?
a. Heart
b. Pituitary gland
c. Brain
d. Spinal cord
The exit of waste materials from the human alimentary canal is regulated by:
a. Large intestine
b. Anal sphincters
c. Urethra
d. Mouth
Digestion of proteins starts in:
a. Stomach
b. Pancreas
c. Small intestine
d. Mouth
During aerobic respiration, the breakdown of the pyruvate molecule using oxygen takes
place in
a. Cytoplasm
b. Ribosomes
c. Nucleus
d. Mitochondria

ANS WITH REASON

Answer 1

Answer:

1) cramps

2) pituitary gland

3) Anal sphincters

4)mouth

5) Mitochondria