Biology Chapter 5 Entry test MCQs
101. Destruction of all beta cells in the pancreas would cause:
a. Insulin secretion to stop and an increase in blood glucose
b. Glucagon secretion to stop and a decrease in blood glucose
c. Insulin secretion to stop and a decrease in blood glucose
d. Glucagon secretion to stop and an increase in blood glucose
E. Insulin secretion to increase and a decrease in blood glucose
102. u-cells of pancreas secrete a hormone known as:
a. Insulin
b. Glucagon
c. Rennin
d. Gastrin
103. Which of the following is not secreted by thyroid gland?
a. Calcitonin
b. Thyroxin
c. Glucagon
d. Triiodothyronine
104. ———–hormone is antagonistic to insulin and causes increase in blood glucose level.
a. Nor-epinephrine
b. Glucagon
c. Thyroxin
d. Calcitonin
105. Beta cells of islets of Langerhans produce———hormone.
a. Insulin
b. Glucagon
c. Parathormone
d. Pancreatic Juice
106. Excess glucose is converted in the liver to glycogen in response to the hormone:
a. Glucagon
b. Insulin
c. Bile
d. Both A and B
Adrenal Glands
107. Which of the following acts as a messenger in both chemical and nervous coordination?
a. Dopamine
b. Acetylcholine
c. Epinephrine
d. Nicotine
108. Which one of the following is only glucocorticoid?
a. Corticosterone
b. Cortisol
c. Androgen
d. Aldosterone
109. Which one of the following is exclusively a mineralocorticoid?
a. Corticosterone
b. Cortisol
c. Androgen
d. Aldosterone
110. All of the following are produced in adrenal gland, except:
a. Calcitriol
b. Epinephrine
c. Androgens
d. Cortisol
111. Aggressive behavior during routine life can be a symptom of:
a. Over production of adrenal cortex
b. Hyperthyroidism
c. Over production of adrenal medulla
d. Over production of STH
112. Peripheral vasoconstriction is a function of:
a. Epinephrine
b. Vasopressin
c. Norepinephrine
d. Secretin
113. One which is not due to adrenal cortical abnormality:
a. Failure to cope stress
b. Addison’s disease
c. Tay-Sach’s disease
d. Cushing’s disease
114. A tumor in inner part of adrenal cortex in female results in all except:
a. Over androgen production
b. Sterility
c. High steroid level in blood
d. Male like characters in female
115. Action of epinephrine and nor-epinephrine differs on vessels supplying blood to:
a. Brain and muscles
b. All parts of body
c. Skin and muscles
d. Skin and gut
116. Stress conditions such as cold which normally be overcome, leads to collapse and death in:
a. Diabetes
b. Cushing’s disease
c. Cretinism
d. Addison’s disease
117. Adrenalin and nor-adrenalin promote the release of glucose from the liver:
a. Glycogen
b. Protein
c. Starch
d. Fats
118. Epinephrine and norepinephrine are hormones produced by:
a. Pituitary Gland
b. Thyroid Gland
c. Thymus gland
d. Adrenal medulla
119. A man has to face interview, but during experiences sweating, increased heart his first five minutes before the interview he experiences sweating, increased heart rate and respiration. Which hormone responsible for his restlessness?
a. Epinephrine and nor-epinephrine
b. Adrenocorticotropic hormone
c. Aldosterone
d. Insulin and glucagon
Gonads
120. Which one of the following gland produces steroidal hormones?
a. Hypothalamus
b. Pancreas
c. Testes
d. Gut
121. If estrogen is deficient then possible reason would be less amount of:
a. Oxytocin
b. Testosterone
c. ICSH
d. FSH
122. In castrated male, there is under-secretion of:
a. LTH
b. Testosterone
c. STH
d. FSH
123. Testosterone is involved in production of primary sex organ in male:
a. After birth
b. Before birth
c. Before puberty
d. After puberty
124. Estrogen is produced from all except:
a. Follicle under FSH
b. Developing follicle
c. Ruptured follicle
d. Maturing follicle
125. A significant constant level of testosterone can be seen in male:
a. After birth
b. Before birth
c. Before puberty
d. After puberty
126. Deficiency of which hormone causes sterility in humans?
a. Estrogen
b. Testosterone
c. Progesterone
d. Both A and B
127. The hormones which works mostly on the basis of positive feedback mechanism:
a. Oxytocin
b. ADH
c. Aldosterone
d. Insulin
128. Which one of the following is a steroid hormone?
a. Thyroxin
b. Glucagon
c. Estrogen
d. Epinephrine
Feedback Mechanism
129. Normal serum level of hormones is controlled by:
a. Effector’s response
b. Target site
c. Precursor activation
d. Feedback mechanism
Positive Feedback Mechanism
130. Which body function is controlled through positive feedback mechanism?
a. Body temperature
b. Labour contractions
c. Thyroxin release
d. Insulin production
Negative Feedback Mechanism
131. Which of the following hormones follow negative feedback mechanism?
a. TSH
b. Oxytocin
c. ACTH
d. Both A and C