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BIOLOGY > cell biology > Flashcards

cell biology Flashcards

1
Q

define the KARYOLUMPH

A

it is a transport semi solid granular that fills the space between the nuclear envelope and the nucleolus

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2
Q

the nucleoprotein of the nucleoplasm arw categorised as what

A

histones

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3
Q

what is the thickness of the nuclear membrane

A

75-90A

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4
Q

the outer membrane of the nucleus remain rough due to the presence of which oorganell

A

Endoplasmic reticulum

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5
Q

what covers the pore complex of the nucleus

A

it is covered by a thin membrane called Septum

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6
Q

where does translation occur in eukaryotic cells

A

cytoplasm

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7
Q

list the set of organelles that are common to both prokaryotic and eukaryotic cells

A

1.cell membrane
2.ribosomes
3.DNA
4.cytoplasm

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8
Q

which organelle are importabt during cell division

A

Centrioles

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9
Q

define the Nucleolus

A

it is a ball-like mass of fibres and granules within the nucleus of eukaryotic cells

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10
Q

how many membranes delineate the (borders) of prokaryotic cells

A

One membrane

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11
Q

which organism produces phycoerythrin

A

Algae

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12
Q

what connects the stacks of thylakoids sacs

A

Stroma lamellae

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13
Q

what common chemical structure does pigments in plants have

A

porphyrin ring

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14
Q

where does ribosomes originate

A

nucleus

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15
Q

what does a Codon visually represent during protein synthesis

A

Amino acid

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16
Q

give an example of a spontaneous generation

A

1.butterfly from caterpillar
2.maggote from rotten meat
3. fleas from dust

17
Q

which scientist stated that all cells arise from pre_existing cells

A

RUDOLF VIRCHOW

18
Q

what is the main function of the smooth ER

A

the detoxification of drugs and poisons in the blood

19
Q

which scientist first described cell division

A

WALTER FLEMING

20
Q

give three fact about the endosymbiosis theory

A

1.mitochondria makesit own proteins
2.mitochondria replicates
3.mitochondria has it own DNA

21
Q

which organell synthesize ribosomes

A

nucleoli

22
Q

which organelle is involve in translation

A

nucleous

23
Q

what is the ratio of DNA to proteins of a chromatin fibre

A

1:1

24
Q

what is the diameter of the nuclear pore

A
25
Q

which scientist recognised the presence of single celled organisms

A

FELIX DUJARDIN

26
Q

WHICH SCIentist proposed that all livithins were made of cells

A

HENRY DUTROCHET

27
Q

WHICH ORGANELLE IS ASSOCIATED WITH THE disorder-tay-sac-disease

A

LYSOSOMES

28
Q

WHICH ORGANS is the smooth ER present

A

1OVARIES
2.LIVER
TESTES IT is not in Kidney

29
Q

the process of autolysis is common to which organelle

A

Lysosomes

30
Q

facts about ER

A

it is continuos with the nuclear envelope
it interir is called lumen
it has structures called Cisternae

BIOLOGY (7 decks)

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