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Home » Medical Science » Biotechnology » Aptitude Test - 3
1.Both plant and animal cell possess
A. cell walls
B. mitochondria
C. central vacuoles
D. cell walls
2.The cellular organelle associated with secretion is the
A. golgi complex
B. mitochondrion
C. ribosome
D. golgi complex
3.Cellular organelles are embedded in the
A. endoplasmic reticulum
B. cristae
C. cytosol
D. endoplasmic reticulum
4.Which molecule serves as a carrier of fatty acids in mitochondria?
A. Acetyl-CoA
B. Carnitine
C. Dolichol
D. Acetyl-CoA
5.If the ester bonds of a triacylglycerol molecule's are broken then the kind of molecule, which would be soluble in water, is
A. fatty acid
B. steroid
C. glycogen
D. fatty acid
6.If the ester bonds of a triacylglycerol molecule's are broken then the kind of molecule, which would be soluble in water, is
A. fatty acid
B. steroid
C. glycogen
D. fatty acid
7.The composition of the inner mitochondrial membrane is most like that of
A. the outer mitochondrial membrane
B. the cell's plasma membrane
C. some bacterial plasma membranes
D. the outer mitochondrial membrane
8.If complex III were incorporated into an artificial lipid vesicle in order to demonstrate it's proton translocating ability in isolation, which of the following would be an appropriate electron donor?
A. If complex III were incorporated into an artificial lipid vesicle in order to demonstrate it's proton translocating ability in isolation, which of the following would be an appropriate electron donor?
B. Cytochrome c peroxidase
C. Ubiquinol (UQH2)
D. If complex III were incorporated into an artificial lipid vesicle in order to demonstrate it's proton translocating ability in isolation, which of the following would be an appropriate electron donor?
9.The cell membrane is made up of
A. lipoproteins
B. cellulose
C. phospholipids
D. lipoproteins
10.Which of the following statements about the outer mitochondrial membrane is not true?
A. The outer membrane is impermeable to hydrogen ions
B. The outer membrane is highly permeable to substances of small molecular weight
C. The outer membrane is highly permeable to substances of small molecular weight
D. The outer membrane is impermeable to hydrogen ions
11.Specialized type of peroxisome and the site of glyoxylate pathway in certain plants is known as
A. gly-peroxisome
B. lysosome
C. glyoxysome
D. gly-peroxisome
12.Which of the following observations is not used as evidence to support the concept of endosymbiotic origin of chloroplasts and mitochondria?
A. Both have their own DNA
B. Both have their own ribosomes
C. Both strongly resemble prokaryotes, especially in size
D. Both have their own DNA
13.The fluid matrix of a cell is called the
A. nucleus
B. cytosol
C. cytoskeleton
D. nucleus
14.In plant cells, which of the following is not a function of the large central vacuoles of plant cells?
A. Storage of food
B. Support
C. Contractile regulation of
D. Storage of food
15.Which of the following can be found as a part of the mitochondrial matrix?
A. Ribosomes
B. DNA
C. Enzymes
D. Ribosomes
16.A widely accepted explanation for transport of sugar in phloem is called
A. root pressure theory
B. transpiration
C. pressure flow hypothesis
D. root pressure theory
17.Phloem is composed of
A. vessel elements and companion cells
B. tracheids and vessel elements
C. sieve-tube elements and companion cells
D. vessel elements and companion cells
18.The movement of most minerals, including potassium into root cells is by
A. osmosis
B. diffusion
C. bulk flow
D. osmosis
19.The evaporation of water from leaves is called
A. transpiration
B. cohesion
C. tension
D. transpiration
20.Normally CO2 and O2 enter a plant by
A. osmosis
B. active transport
C. diffusion
D. osmosis
21.The cohesion-tension theory of water movement helps to explain how water moves from soil into root?
A. Through the phloem
B. From leaf to root
C. Through the xylem
D. Through the phloem
22.When guard cells swell
A. stomata close
B. stomata open
C. photosynthesis stops
D. stomata close
23.Water moves into roots of plants by
A. osmosis
B. active transport
C. diffusion
D. osmosis
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