NEET-2020 BIOLOGY | BIOLOGY VERY IMP MCQs | NEET PREPARATION
UNIQUE SCIENCE START WITH UNIQUE TEST SERIES FOR THE STUDENTS GET MORE SCORE IN COMPETITIVE EXAMINATION LIKE
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TOPIC: CELL BIOLOGY
1.
Differentiation capacity of compound microscope is
(a) 0.275
mm (b) 2.75 mm
(c) 27.5 mm (d) None
2.
Feulgen
reaction a technique has been developed by Feulgen and Rossenbeck to study or
to stain
(a) Proteins (b) Lipids
(c) DNA (d) RNA
3.
The
transmission electron microscope has a resolution of
(a) 2,000 nanometres (b) 200 nanometres
(c) 2
nanometres (d) 0.2 nanometre
4. The electron microscope is used for
(a) Viewing the structure of the cell
(b) Whole-mount study
(c) Cell division study
(d) Structure of the pollen grain
5.
A magnification of up to 100 million times is
possible in
(a) Scanning
electron microscope
(b) Electron transmission microscope
(c) Scanning probe microscope
(d) Photon tunneling microscope
6.
Resolving
power of light microscope is
(a) 0.2 mm (b) 0.1 mm
(c) 2 mm (d) 100 mm
7.
Electron microscope has revealed the presence of or Which among the following can be seen
only under an electron microscope
(a) Ribosome (b) Chromosome
(c) Chloroplast (d) Leucoplast
8.
Who
invented the "electron microscope''
(a) Knoll and Ruska (b) Robert Brown
(c) Correns (d) Janssen and Janssen
9.
The
part of a cell that can be seen with an electron microscope, but never with a
light microscope is/are the
(a) Nucleus
(b) Golgi
bodies
(c) Chloroplasts
(d) The membrane separating the nucleus from the cytoplasm
10.
1 nm is equal to
(a) 10 Å (b)10–3 mm
(c) 10–8
m (d) 100 mm
11.
Which
of the following statements is false
(a) An
angstrom is one–hundredth of a micron
(b) Separation of
proteins can be brought about by electrophoresis
(c) The image produced by a compound microscope is
virtual and erect
(d) Unstained living cells and tissues studied
under phase-contrast microscope
12.
Lignified
cells are stained by
(a) Saffranine
(b) Methyl blue
(c) Acetocarmine (d) Light
green
13.
An angstrom is equal to
(a) 10–10
m (b) 10–9 m
(c) 10–8
m (b) 10–5 m
14.
The smallest size of a cell which can be seen with the unaided eye is or
differentiation capacity of the human eye is
(a) 1 micron (b) 10 micron
(c) 100
micron (d) 1000 micron
15.
Ultrastructure
of the cell can be best studied by
(a) Autoradiography
(b) X-ray
diffraction method
(c) Phase
contrast microscope
(d) None of
these
16.
The correct order of sedimentation of the sub-cellular structure during differential
centrifugation is
(a) Lysosome
® Mitochondria ® Nucleus ® Ribosome
(b) Mitochondria
® Nucleus ® Lysosome ® Ribosome
(c) Nucleus ® Mitochondria ® Lysosome ® Ribosome
(d) Lysosome ® Ribosome ® Mitochondria ® Nucleus
17.
Which
one of the following is a vital stain
(a) Janus
green – B (b) Neutral red
(c) Methylene
blue (d) All the above
18.
Cellulosic
the cell wall can be specifically stained by
(a) Zinc
chloride (b) Fluoroglucinol
(c) Methyl
blue (d) Sudan IV
19.
Mitochondria
in the living cell can readily be identified from other organelles of the cell
through a light microscope by using
(a) Cotton
blue (b) Osmic acid
(c) Janus
green – B (d) Lead citrate
20.
If
biochemical analysis of mitochondria is to be done, the best procedure would
be
(a) Grind the cell and filter out the mixture and take the debris
(b) Subject the cells to cell differentiation (centrifuge) and obtain
mitochondria
(c) Select
cells which have a large number of mitochondria
(d) Plasmolyse
the cell, filter it and take the debris
ANSWER SHEET
|
1
|
a
|
2
|
c
|
3
|
d
|
4
|
a
|
5
|
c
|
|
6
|
a
|
7
|
a
|
8
|
a
|
9
|
d
|
10
|
a
|
|
11
|
a
|
12
|
a
|
13
|
a
|
14
|
c
|
15
|
d
|
|
16
|
c
|
17
|
d
|
18
|
a
|
19
|
c
|
20
|
b
|
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