SMART INSTITUTE NMDCAT BIOLOGY 2ND HALF
SMART INSTITUTE NMDCAT BIOLOGY 2ND HALF
1-Cross bridges are the part of
actin
tropomyosin
troponin
myosin
2-Phagocytic cells of bone are called as
fibroblast
osteoblast
osteoclast
osteocyte
3-Which of the following band allows most of the light to pass through it?
A-band
I-band
muscle bundle
muscle fiber
4-Fatigue is not possible in
skeletal muscles
cardiac muscles
circular smooth muscle
longitudinal smooth muscle
5-What is required for striated muscles to contract
release of Ca++ from troponin
binding of Ca++ to troponin
binding of Ca++to tropomyosin
release of Ca++ from tropomyosin
6-Diameter of each myofibril
2 micrometer
100 nanometer
10 micrometer
100 micrometer
7-Myelin sheath is the covering of
muscle cell
axon
blood vessels
osteocyte
8-Part of motor neuron which makes synapse with sarcolemma is
motor unit
dendron
axon
dendron and axon
9-Microscopic gap between the neurons is called as
synapse
collapse
synaptic cleft
presynapse
10-Which of the following membrane potential depicts hyperpolarization?
-50 mV
+50 mV
-90 mV
-70 mV
11-Depolarization is the result of
influx of K+
efflux of K+
influx of Na+
efflux of Na+
12-Dorsal root of a spinal nerve contains
motor nerve fibers
mixed nerve fibers
sensory nerve fibers
no nerve fibers
13-Collection of cell bodies of neurons in CNS is known as
ganglion
narve
nuclei
tract
14-All of the following are common between brain and spinal cord except
protected by skeletal muscles
protected by meninges
nutrients from CSF
CSF production in ventricles
15-Follicular atresia is the degeneration of
primary oocyte
primary follicles
1st polar body
2nd polar body
16-LH in males mainly acts on
epididymis
interstitial cells
sertoli cells
germinal epithelium
17-Structure that is formed at the site of ovulation
placenta
corpus luteum
graffian follicle
primary oocyte
18-Causative agent of syphilis is identified as
bacilus
coccus
coccobacilus
spirochete
19-All of the following contribute to the formation of semen except
seminal vesicles
prostate gland
cowper's gland
vas deferens
20-All of the following structures are paired except
testes
bulbourethral
seminal vesicle
prostate gland
21-Secretion of estrogen is under the control of
FSH
PROGESTERONE
LH
STH
22-Milk production is the function of
oxytocin
ADH
PROLACTIN
LH
23-All of the following are releasing factor except
CRF
PIF
TRF
SRF
24-Term master gland is ued for
anterior pituitary
posterior pituitary
median pituiatry
pituitary gland
25-The pituitary gland is also called as
adenohypophysis
neurohypophysis
hypophysis cerebri
epiphyses cerebri
26-If estrogen is deficient then possible reason would be less amount of
testosterone
oxytocin
FSH
ICSH
27-The molecules regenerated by fermentation
O2
NAD+
ATP
PYRUVATE
28-NADP reductase transfers electron from
NADP+ to ferridoxin
ADP to ATP
ferridoxin to NADP+
cytochrome complex to NADP+
29-Phosphorylation of ADP during glycolysis occurs via
photophosphorylation
chemiosmosis
oxidative phosphorylation
substrate level phosphorylation
30-For evolutionary success, mutations must occur in
somatic RNA
germ cell DNA
somatic DNA
germplasm RNA
31-Production of more individuals than the environment can lead to
struggle for existence
survival of the fittest
natural selection
evolution
32-According to Darwin, finches found on Galapagos island had distinct characteristics due to
geographical isolation
developmental anamoly
special creation
inheritance of acquired characteristics
33-Comparative anatomy supports that evolution is a ....... process in which ancestral structures that functioned in one capacity become modified as they take on new function.
continuous
remodeling
discontinuous
complete
34-Darwin perceived origin of new species and ............
fixation
adaptations
stabilization
maladaptation
35-Product of evolution is
ecosystem
biome
community
species
36-A woman can suffer from hemophilia A if she is
homozygous dominant
heterozygous
homozygous recessive
hypophosphatemic rickets
37-An allele is recessive if it is expressed in
F 1 generation
homozygous combination and heterozygous combination
homozygous combination only
heterozygous combination
38-The haploid chromosome number in pea is
7
14
8
10
39-The number of linkage groups in human
23
46
92
96
40-Negative charge on DNA is due to
base
phosphate groups
OH- groups
sugar molecules
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