Sample paper 3
Question: 1
The semi fluid mass of partly digested food is called chyme. Formation of chyme takes place
in
A. Mouth
B. Small intestine
C. Large intestine
D. Liver
E. Stomach
Correct Answer: E. Stomach
Explanation:
The semifluid mass of partly digested food in stomach before entering duodenum is called as chyme.
The food mixes thoroughly with the acidic gastric juice of the stomach by the churning movements of
its muscular wall and results in the formation of chyme.
Question: 2
Which of the following kinds of signalling occurs when the cells communicate with each other
through direct contact?
A. Endocrine signalling
B. Paracrine signalling
C. Juxtacrine signalling
D. Intracrine signalling
E. None of the above
Correct Answer: C. Juxtacrine signalling
Explanation:
Juxtacrine signalling is an example of intercellular communication where cells communicate through
direct contact. Endocrine signalling occurs between cells that are present over large distance.
Paracrine signalling occurs between cells that are present over short distance. In intracrine signalling
the signals are produced inside the target cell.
Question: 3
Chains of sarcomeres in muscles are organized into
A. Sarcolemma
B. Sarcoplasm
C. Myoblasts
D. Myofibrils
E. Fascia
Correct Answer: D. Myofibrils
Explanation:
Sarcolemma is the muscle cell membrane and the sarcoplasm is the cytoplasm of muscle cell. The
connective tissue outside the epimysium (sheath of connective tissue that surrounds each muscle)