Which of the following hormones can play a significant role in osteoporosis?
a.
Parathyroid hormone and Prolactin
b.
Aldosterone and Prolactin
c.
Estrogen and Parathyroid hormone
Correct Answer
d.
Progesterone and Aldosterone
Step-by-Step AI Explanation
Verified Method
Osteoporosis is related to decreased estrogen levels (post-menopause) and overactivity of Parathyroid hormone (which leaches calcium from bones).
Q47mcq
Which of the following is an amino acid derived hormone?
a.
Estriol
b.
Epinephrine
Correct Answer
c.
Estradiol
d.
Ecdysone
Step-by-Step AI Explanation
Verified Method
Epinephrine (and norepinephrine) are catecholamines, which are derived from the amino acid tyrosine.
Q48mcq
Which of the following structures or regions is incorrectly paired with its function?
a.
Corpus callosum : band of fibers connecting left and right cerebral hemispheres.
b.
Medulla oblongata : controls respiration and cardiovascular reflexes.
c.
Hypothalamus : production of releasing hormones and regulation of temperature, hunger and thirst.
d.
Limbic system : consists of fibre tracts that interconnect different regions of brain; controls movement.
Correct Answer
Step-by-Step AI Explanation
Verified Method
The limbic system is primarily involved in emotions, behavior, and memory, not the direct control of voluntary movement (which is the function of motor cortex and cerebellum).
Q49mcq
The transparent lens in the human eye is held in its place by
a.
smooth muscles attached to the ciliary body
b.
ligaments attached to the ciliary body
Correct Answer
c.
smooth muscles attached to the iris
d.
ligaments attached to the iris
Step-by-Step AI Explanation
Verified Method
The lens is held in position by suspensory ligaments that are attached to the ciliary body.
Q50mcq
The amnion of mammalian embryo is derived from
a.
ectoderm and endoderm
b.
ectoderm and mesoderm
Correct Answer
c.
mesoderm and trophoblast
d.
endoderm and mesoderm
Step-by-Step AI Explanation
Verified Method
The amnion is an extraembryonic membrane formed from the somatopleure, which consists of the embryonic ectoderm and the somatic layer of the mesoderm.
Q51mcq
Hormones secreted by the placenta to maintain pregnancy are
a.
hCG, progestogens, estrogens, glucocorticoids
b.
hCG, hPL, progestogens, prolactin
c.
hCG, hPL, progestogens, estrogens
Correct Answer
d.
hCG, hPL, estrogens, relaxin, oxytocin
Step-by-Step AI Explanation
Verified Method
The placenta secretes hCG, hPL, progestogens (progesterone), and estrogens to maintain pregnancy.
Q52mcq
The contraceptive ‘SAHELI’
a.
is a post-coital contraceptive.
b.
blocks estrogen receptors in the uterus, preventing eggs from getting implanted.
Correct Answer
c.
is an IUD.
d.
increases the concentration of estrogen and prevents ovulation in females.
Step-by-Step AI Explanation
Verified Method
Saheli (Centchroman) is a non-steroidal oral contraceptive that blocks estrogen receptors in the uterus, preventing implantation.
Q53mcq
The difference between spermiogenesis and spermiation is
a.
In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules.
Correct Answer
b.
In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.
c.
In spermiogenesis spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.
d.
In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed.
Step-by-Step AI Explanation
Verified Method
Spermiogenesis is the transformation of spermatids into spermatozoa. Spermiation is the process where mature spermatozoa are released from the Sertoli cells into the lumen.
Q54mcq
A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by
a.
Both sons and daughters
Correct Answer
b.
Only daughters
c.
Only grandchildren
d.
Only sons
Step-by-Step AI Explanation
Verified Method
A woman passes one of her two X chromosomes to all her children (sons and daughters receive one X from the mother).
Q54mcq
A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by
a.
Both sons and daughters
Correct Answer
b.
Only daughters
c.
Only grandchildren
d.
Only sons
Step-by-Step AI Explanation
Verified Method
An X chromosome from a mother can be passed to both sons (who receive one X from mother and one Y from father) and daughters (who receive one X from each parent).
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Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Proliferative Phase, b. Secretory Phase, c. Menstruation
Column II: i. Breakdown of endometrial lining, ii. Follicular Phase, iii. Luteal Phase
a.
iii i ii
b.
iii ii i
c.
ii iii i
d.
i iii ii
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Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?
a. Dominance, b. Co-dominance, c. Multiple allele, d. Incomplete dominance, e. Polygenic inheritance
a.
a, c and e
b.
b, c and e
c.
b, d and e
d.
a, b and c
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Match the items given in Column I with those in Column II and select the correct option:
Column I: a. Eutrophication, b. Sanitary landfill, c. Snow blindness, d. Jhum cultivation
Column II: i. UV-B radiation, ii. Deforestation, iii. Nutrient enrichment, iv. Waste disposal
a.
i ii iv iii
b.
ii i iii iv
c.
iii iv i ii
d.
i iii iv ii
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Match the items given in Column I with those in Column II and select the correct option:
Column I: a. Fibrinogen, b. Globulin, c. Albumin
Column II: i. Osmotic balance, ii. Blood clotting, iii. Defence mechanism
a.
ii iii i
b.
iii ii i
c.
i iii ii
d.
i ii iii
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Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Fibrinogen, b. Globulin, c. Albumin
Column II: i. Osmotic balance, ii. Blood clotting, iii. Defence mechanism
a.
(1) ii iii i
b.
(2) iii ii i
c.
(3) i iii ii
d.
(4) i ii iii
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Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Tricuspid valve, b. Bicuspid valve, c. Semilunar valve
Column II: i. Between left atrium and left ventricle, ii. Between right ventricle and pulmonary artery, iii. Between right atrium and right ventricle
a.
(1) ii i iii
b.
(2) iii i ii
c.
(3) i ii iii
d.
(4) i iii ii
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Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Tidal volume, b. Inspiratory Reserve volume, c. Expiratory Reserve volume, d. Residual volume
Column II: i. 2500–3000 mL, ii. 1100–1200 mL, iii. 500–550 mL, iv. 1000–1100 mL
a.
(1) iv iii ii i
b.
(2) iii ii i iv
c.
(3) i iv ii iii
d.
(4) iii i iv ii
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Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Glycosuria, b. Gout, c. Renal calculi, d. Glomerular nephritis
Column II: i. Accumulation of uric acid in joints, ii. Mass of crystallised salts within the kidney, iii. Inflammation in glomeruli, iv. Presence of glucose in urine
a.
(1) iv i ii iii
b.
(2) iii ii iv i
c.
(3) ii iii i iv
d.
(4) i ii iii iv
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Match the items given in Column I with those in Column II and select the correct option given below:
Column I (Function): a. Ultrafiltration, b. Concentration of urine, c. Transport of urine, d. Storage of urine
Column II (Part of Excretory System): i. Henle’s loop, ii. Ureter, iii. Urinary bladder, iv. Malpighian corpuscle, v. Proximal convoluted tubule
a.
(1) v iv i iii
b.
(2) iv v ii iii
c.
(3) v iv i ii
d.
(4) iv i ii iii
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Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
a.
Viola
b.
Hydrilla
c.
Banana
d.
Yucca
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