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Biology > Cell Unit Of Life > Flashcards

Cell Unit Of Life Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Study of cell is called

A

Cytology

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2
Q

Father of cytology

A

Robert hook

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3
Q

The term cell was given by?

A

Micrographia

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4
Q

Discovery of living cell

A

Antonen leuohook

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5
Q

Discovery of nucleus

A

Robert brown (1832)

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6
Q

Cell theory was given by

A

Schwann, scheiden

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7
Q

What slogan did vircho gave back in 1855

A

Double omnisim cellula -é- cellula

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8
Q

Prokaryotic cells basic things

A

Naked DNA, nuclear membrane absent, single chromosome

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9
Q

In prokaryotic all’s the cell is made up of?

A

Peptidoglycane (absent in microplasma)

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10
Q

Howomany ribosomes are there in prokaryotes

A

70 s

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11
Q

Does organelle in prokaryote have any membrane ?

A

No

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12
Q

DNA in prokaryotes present in?

A

Neucloid

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13
Q

Does eukaryotes have membrane

A

Yes

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14
Q

Size or shape of chromosome in eukaryotes

A

Linear with histone protein

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15
Q

Cell wall in eukaryote is made up of

A

Cellulose

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16
Q

How many ribosome are these in eukanoyte

A

80S

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17
Q

Does organelle of eukaryote have membrane?

A

Yes

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18
Q

Where are some extra DNA stored in eukaryote?

A

Mitochondria and plastid

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19
Q

Smallest cell

A

Mycoplasma

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20
Q

Largest plant cell

A

Acetabularia

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21
Q

Largest animal cell

A

Ostrich egg

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22
Q

Largest human cell

A

Ovum

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23
Q

Smallest human cell

A

Sperm

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24
Q

Longest human cell

A

Nerve cell

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25
Q

What are the things that are absent in animal cell?

A

Cell wall, vacuoles, plastid , central largest sap vacuole ,

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26
Q

Which organelle in animal cell is most common?

A

Lysosomes

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27
Q

How food is stored in animal cell in which form?

A

Glycogen

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28
Q

The name of the method by which animal cell divide

A

Furrow method

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29
Q

What are the things that are present in plant cell?

A

Cell wall, vacuoles ,plastid

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30
Q

A centrosomes present absent in plant cell

A

Absent

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31
Q

Which organelle are found most rare in plant cell

A

Lysosomes

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32
Q

Name of the method by which cell divides in plant cell

A

Cell plate formation method

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33
Q

What are the organelle which has double membrane

A

Mitochondria and plastid

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34
Q

Single membrane organelle

A

Golgi body lysosomes SAP vacuoles

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35
Q

What are the non-membrane organelle?

A

Centrosome, ribosome

36
Q

The term cytoplasm was given by

A

Stress burger

37
Q

What is the basic function of cell wall?

A

Rigidity and protection

38
Q

In plant and algae, the cell wall is made up of where as in fungi is made up of

A

Cellulose,kiten

39
Q

What is the function of middle lamila

A

Cementing material basically joints, primary layer of two cells

40
Q

The formation of middle lamila

A

90% calcium pactid 10% magnesium pactid

41
Q

Cell wall is made up of cellular, but it is made up of several things which combine and called

A

Microfibrils

42
Q

What are the other substances which are present in the cell wall along with micro fibrils

A

Cutin Suberin pectin lignin

43
Q

What are the basic four shapes of bacteria?

A

Bacillus , coccus, vibrio, spirillum

44
Q

What are the three layers in prokaryotic cells?

A

Plasma membrane, cell wall and glycocalyx

45
Q

in prokaryotes , the genetic material is in the form of

A

Circular dna

46
Q

What are the things which are attached in the in folds of plasma membrane in prokaryotic cells?

A

Circular DNA attached

47
Q

Folds in prokaryotic cell has some enzymes which are helpful in

A

Mesosomes for respiration and work as mitochondria of eukaryotic cell

48
Q

Gram positive bacteria shows which colour

A

Blue or purple and also have thick cell wall

49
Q

Gram negative bacteria show which colour

A

Pink and red and they have thin wall

50
Q

Plasma present in prokaryotic cells have how many types of genes and name them

A

F. Gene r. Gene .col gene

51
Q

Unique features of eukaryotic cell

A

Centriole and plasma membrane is exposed

52
Q

Is plasma membrane of plant cell is selectively permeable? And semipermeable

A

Yes

53
Q

Does plasma membrane of plant cell shows variation

A

Yes

54
Q

Sandwich model of plasma was given by

A

Danielli davson

55
Q

Why sandwhich model got failed what were the drawbacks of it

A

Did not show the movement of plasma membrane and also the entry of water

56
Q

What was the protein : phospholipid in sandwhich model

A

6:4

57
Q

Unit membrane model of plasma was given by ?

A

Robert son

58
Q

What is the thickness of plasma membrane according to unit model of plasma

A

75 to 100 a

59
Q

Why did unit membrane model of plasma got failed ? And what was the name of the combination of sandwhich model and unit membrane model of plasma

A

Cannot explain the water entrance
P:pl
Dynamic ratio
Called lamillar model

60
Q

Fluid mosaic model was given by

A

Singer Nicholson

61
Q

which protein is used in formation of plasma membrane acc to fluid mosaic model ?

A

Alpha globular

62
Q

According to fluid Mossiac model, how many types of movement does phospholipids lipid show?

A

Flip-flop movement, transition movement

63
Q

What are the method of transportation across the plasma membrane which one is lower?

A

Passive transport, active transport passive does not require ATP. It is lower and it is done by concentration, gradient whereas active transport is with ATP faster and energy. Dependent movement also can be against the concentration gradient

64
Q

Which one of the process of transportation is not affected by lower temperature or oxygen or metabolic cyanide?

A

Passive transport example diffusion osmosis

65
Q

Which one of the following transportation process is affected by lower temperature absence of O2 and cyanide?

A

active transport example sodium potassium pump endocytosis are exocytosis

66
Q

What happen when animal cell is placed in an hypertonic solution?

A

It might rupture endosmosis will occur

67
Q

What happen when the animal cell is placed in hypertonic solution?

A

Exocytosis, it might shrink

68
Q

What principle does work in closing and opening of stomata?

A

Osmosis

69
Q

From what principle does touch may not plant works

A

Osmosis

70
Q

What are the basic factors affecting rate of diffusion

A

Temperature density of a medium is directly proportional to diffusion distance concentration of gradient

71
Q

What does basic idea of facilitated diffusion means?

A

Protein binds with substance and move and release it into cytoplasm

72
Q

What kind of process are endocytosis and exocytosis are?

A

Active transport

73
Q

Tell the term name of phagocytosis and pinocytosis

A

Phagocytosis equals to cell eating pinocytosis, meaning cell drinking

74
Q

Location of micro villi’s in our body

A

Intestinal DC T of nephron

75
Q

Plasma membrane of cell show some kind of different changes between the cell. How many type of junction does it makes?

A

Interdigitation, tight junction, gap, junction, desmosome, terminal bars, plasmodesmata Oh

76
Q

When the carbohydrate group is directly attached to a lipid, it is known as

A

Glycolipid

77
Q

When the carbohydrate group is attached on a protein above the lipid, it is known as

A

Oligosaccharide, glycoprotein

78
Q

Cell wall is formed during the formation of

A

Cytokinesis

79
Q

Between two adjacent cell, the layer which binds to cell wall together called

A

Middle lamila

80
Q

How many layers are there in a cell wall?

A

Primary layer, secondary layer, middle lamila

81
Q

Which one layer in the cell wall is very thin and has elasticity in it

A

Primary layer

82
Q

Which layer in the cell wall has the property of rigidity and thickness

A

Secondary layer

83
Q

What are the components that the primary layer in the secondary layer are made up of in a cell wall?

A

They are composed from cell, those hemi, cellulose, pectin and proteins

84
Q

What are the additional protein which are involved in cell wall?

A

Pectin , Suberin , cutin Hemi cellulose

85
Q

Cell wall materials, hemi cellulose pectin are synthesised in plant

A

Goldie body

Biology (2 decks)

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