Q.48 Muramic acid is present in cell walls of -
(1) Bacteria and blue-green algae
(2) Green algae
(3) Yeast
(4) All fungi
Q.49 Growth of cell wall during cell elongation
takes place by -
(1) Apposition (2) Intussuseption
(3) Both A and B (4) Super position
Q.50 Plasmodesmata are -
(1) Pores in cell wall
(2) Pores in cell membrane
(3) Protoplasmic connections
(4) A and B both
Q.51 Which element mainly occurs in middle
lamella -
(1) Ca (2) Mg
(3) Na (4) K
Q.52 Cell membrane is composed of -
(1) Proteins and cellulose
(2) Proteins and phospholipids
(3) Proteins and carbohydrates
(4) Proteins, phospholipids and some
carbohydrates
Q.53 Which of the following is main enzyme of
plasma membrane -
(1) TPP ase
(2) ATP ase
(3) Peptidyl transferase
(4) Catalases
Q.54 Percentage of intrinsic proteins in the total
proteins of plasma membrane -
(1) 70% (2) 20%
(3) 10% (4) 90%
Q.55 Cell wall was discovered by -
(1) Robert brown
(2) Malpighi
(3) Robert Hooke
(4) Nageli
Q.56 Cell wall is -
(1) Dead and impermeable
(2) Dead and permeable
(3) Living and impermeable
(4) Living and selective
Q.57 Decision of cell division occurs at -
(1) Starting of G1
(2) End of G1
(3) Initial stage of prophase
(4) End of telophase
Q.58 Crossing over takes place on -
(1) Two stranded stage
(2) Three stranded stage
(3) One stranded stage
(4) Four stranded state
Q.59 Carbohydrates which present in the cell
membrane take part in -
(1) Transport of substance
(2) Cell recognition
(3) Attachement to microfilament
(4) Attachement to microtubules
Q.60 Plasma membrane is fluid structure due to
presence of -
(1) Carbohydrate (2) Lipid
(3) Glyco protein (4) Poly saccharide
Q.61 When the prophase chromosome are stained
with acetocarmine they take differential
staining. This phenomenon is called -
(1) Idiogram (2) Karyotype
(3) Heteropycnosis (4) Satellite
Q.62 Longest phase of mitosis is -
(1) Prophase (2) Metaphase
(3) Anaphase (4) Telophase
Q.63 Amphipathic molecule in pasma membrane is -
(1) Protein (2) Carbohydrates
(3) Phospholipids (4) All the above
Q.64 The average thickenss of plasma membrane is -
(1) 70Å (2) 75 – 100 Å
(3) 100 – 150 Å (4) 200 Å
Answers
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Answer:
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Answered by
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Answer:
1) bacteriya and blue green algae
2) both a and b
3)pores in cell wall
4) calcium
5)protein and cellulose
6)ATP
7)70%
8) robert hooke
9)dead and permeable
10)end of G1
11)two stranded stage
12) transport of substance
13)lipid
14)
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