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Botany > Cell-the Unit Of Life > Flashcards

Cell-the Unit Of Life Flashcards

1
Q

Prokaryotic cell is found in

A

Monera

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2
Q

Glycocalyx is

A

Chemically carbohydrate-Mucopolysaccharide

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3
Q

Thick tough glycocalyx is

A

Capsule

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4
Q

Loose sticky glycocalyx is

A

Slimy layer

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5
Q

Capsule provides

A

Pathogenicity

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6
Q

Slime layer prevents from

A

Dessication

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7
Q

Monera has cell wall.

A

True

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8
Q

Protista has cell wall without exception.

A

False, some has cell wall.

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9
Q

Monera has which type of cell wall?

A

Peptidoglycan

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10
Q

Peptidoglycan is made of

A

Protiens and carbohydrates

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11
Q

Peptidoglycan is majorly made of

A

Carbohydrates

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12
Q

Fungi has cell wall

A

True

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13
Q

Type of cell wall in fungi

A

Chitin

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14
Q

Plantae has cell wall

A

True

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15
Q

Type of cell wall in plantae

A

Cellulosic

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16
Q

4 roles of cell wall in Bacteria

A

shape to cell
Structural support
Prevent osmotic bursting
Prevent from collapsing

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17
Q

Glycan is polymer of

A

NAG and NAM

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18
Q

How penicillin kills bacteria

A

By preventing crosslinking between NAG AND NAM

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19
Q

All bacteria can be killed.

A

False, because mycoplasma don’t have cell wall

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20
Q

All bacteria have cell wall made of Peptidoglycan.

A

No in archaebacteria different type.

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21
Q

Cell Envelope is made of

A

Glycocalyx+cell wall+cell membrane

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22
Q

Cell envelope is thin in which type of bacteria

A

Gram -ve

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23
Q

Cell envelope is thin in gram negative because of

A

Thin cell wall

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24
Q

Thick cell envelope is in

A

Gram +ve

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25
Q

Cell envelope is thick because if

A

Thick cell wall

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26
Q

Mesosome is well developed in

A

Gram +ve

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27
Q

Mesosome poorly developed in

A

Gram -ve

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28
Q

Fankia is gram +/-

A

+

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29
Q

E coli is gram+/-

A

-

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30
Q

Clostridium is gram +/-

A

+

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31
Q

Mycoplasma is gram +/-

A

-

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32
Q

Lactobacillus is gram +/-

A

+

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33
Q

Cyanobacterium is gram +/-

A

-

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34
Q

Mycobacterium is gram +/-

A

+

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35
Q

Rhizobium is gram +/-

A

-

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36
Q

Porins are present in gram +/-

A
  • only
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37
Q

Gram staining is based on thickness of

A

Cell Envelope

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38
Q

Structure which is chemically same in prokaryotes and eukaryotes

A

Cell membrane

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39
Q

Only water allowed no solute then which type of membrane it is

A

Semipermeable membrane

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40
Q

When one type of solute is allowed and one type of not then which type of cell membrane it is

A

Selectively permeable

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41
Q

Plasma membrane is of which type membrane

A

Selectively Permeable

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42
Q

Thread like extension in a cell for motility

A

Flagella

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43
Q

All bacteria have flagella

A

False

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44
Q

Eukaryotes don’t have flagella

A

False

45
Q

Parts of prokaryotic flagella

A

Hook filament and basal body

46
Q

Longest part of prokaryotic flagella

A

Filament

47
Q

Prokaryotic flagella is made of which protien

A

Flagellin

48
Q

Eukaryotic flagella is made up of which protein

A

Tubilin

49
Q

Tubular shape structure from cell membrane

A

Pilli

50
Q

Protien from which pilli is made

A

Special protienPillin

51
Q

Bristle shape structures arising from cell membrane are

A

Fimbrae

52
Q

Function of fimbrae

A

Attach itself on rock or host tissues

53
Q

Cilia is present in

A

Only eukaryotes

54
Q

Inward extensions or infolding of plasma membrane is

A

Mesosome

55
Q

Mesosomes are in the form of

A

Lamallae
Tubule
Vesicles

56
Q

Five Function of mesosomes

A

Cell division and dna rep
Help Secretion
Respiration
Help in cell wall formation
Increase the surface are and enzymatic content

57
Q

Other membranous extensions then mesosomes are

A

Chromatophores

58
Q

Chromatophores bear

A

Pigments to help in photosynthesis

59
Q

Chromatophores are present in

A

Cyanobacteria

60
Q

Genomic dna in prokaryotes is called

A

Nucleoid

61
Q

Nucleoid js present in

A

Cytoplasm

62
Q

On necessary gene are present on which dna of prokaryotes

A

Nucleoid

63
Q

Dna of prokaryotes is

A

Single cirr ds

64
Q

Extrachromosomal dna in prokaryotes is

A

Plasmid

65
Q

Extra-phenotypic characteristics are given by which dna to the bacteria

A

Plasmid

66
Q

Uncontrolled cell division is due to which plasmid

A

Ti

67
Q

Resistance inducing plasmid

A

R plasmid

68
Q

Plasmid used in bacterial reproduction

A

F plasmid

69
Q

Ribosome has membrane or not

A

No

70
Q

Ribosomes are associated with what in prokaryotes

A

Plasma membrane

71
Q

Size of plasmids

A

15-20 nm

72
Q

Chemically ribosomes are made up of

A

rRNA and proteins

73
Q

Ribosomes in Bacteria

A

30s+50s=70s

74
Q

S stands for, and what it means

A

Suvwdberg’s constant, indirect measure of size and density

75
Q

Many ribosome and proteins together make a long chain called

A

Polyribosomes

76
Q

In bacterial cell what are used for storage

A

Inclusion bodies

77
Q

Features of inclusion bodies

A

Without membrane
Present in cytoplasm
For storage
Insoluble

78
Q

Types of in inclusion bodies

A

Sulfur granule
P granule
Cyanophycean granule
Gas vacuole
Glycogen granule

79
Q

Eukaryotes have organelle with membrane only

A

False, ribosomes

80
Q

Organelles without membrane

A

Ribosome
Centriole
Nucleolus

81
Q

Organelles with single membrane

A

Er
Golgi
Vesicles
Vacuoles
Lysosome
Peroxisome
Cilia and flagella

82
Q

Organelles with double membrane

A

Mitochondria
Plastids
Nucleus

83
Q

Cell membrane was discovered due to

A

Discovery of electron microscope in 1950s

84
Q

Chemical analysis of cell membrane was done via? And what was the composition?

A

RBCs,
Lipid 40 %
Protien 52 %
Other 8%

85
Q

Structure of cell membrane is made up of

A

Lipids+protiens+cholesterol+carbohydrates

86
Q

Based on ease of extract different type of proteins in cell membrane are

A

Integral
Peripheral

87
Q

Carbohydrates present on lipids

A

Glycolipids

88
Q

Carbohydrates present on protein

A

Glycoproteins

89
Q

What varies in the cell membrane of different cells

A

Ratio of protein and lipid

90
Q

Which model is most successful model of cell membrane and given by whom and its characteristics

A

Fluid mosiac model by singer and nicolson in 1972
-membrane is quasi fluid
-fluidity
-flip floo movements of phospholipids

91
Q

On the basis of function types of proteins

A

Channel
Pump
Receptors

92
Q

Role of cell membrane

A

Transport
Growth
Secretion
Endocytosis
Cell interactions

93
Q

Which requires atp channel or pump

A

Pump

94
Q

Cell wall is dead or living?

A

Dead layer

95
Q

Cell wall is present in

A

Plant and fungi

96
Q

Is Cell wall is also present in prokaryotes? and if what it is made up of?

A

Peptidoglycan

97
Q

What is the role of cell wall

A

Rigidity
Structure support
Precent from bursting
Prevent infection
Cell to cell interaction
Prevent entry of macromolecules

98
Q

Algae cell wall is made up of

A

Cellulose
Galactons
Mannans
Minerals like calcium carbonate

99
Q

Plant cell wall is made up of

A

Cellulose
Hemicellulose
Pectin
Protiens

100
Q

Primary cell wall rigid or not

A

It is rigid

101
Q

Which cell wall is capable of growth and which is not

A

Primary and not secondary

102
Q

Secondary cell wall is made up of

A

Lignin - sclerenchyma fibres vessels
Suberin cork cells

103
Q

Secondary cell wall is present

A

In between primary cell wall and plasma membrane

104
Q

What glues two plant cell

A

Middle lamella

105
Q

Middle lamella is made up of

A

Calcium pectate

106
Q

Pits are formed due to

A

Absence of secondary cell wall

107
Q

How cytoplasm connection works

A

By transvehrsion of cell wall and middle lamella by plasmodesmata

108
Q

What is endomembrane system

A

Organelles made up of membrane and acts in a coordinated manner

109
Q

Organelles included in endomembrane system

A

ER
Golgi
Lysosomes
Vacuoles

Botany (1 decks)

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