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Biology > Cell biology (B1) > Flashcards

Cell biology (B1) Flashcards

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1
Q

cytoplasm

A

site of chemical reactions

gel like substance containing enzymes to catalyse the reactions

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2
Q

nucleus

A

contains genetic material

control the activities of the cell

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3
Q

cell membrane

A

controls the movement of substances in out of the cell

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4
Q

ribosomes

A

site of protein synthesis

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5
Q

mitrochondria

A

site of respiration

where energy is released for the cell to function

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6
Q

bacterial DNA

A

floats in the cytoplasm

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7
Q

cell wall (bacteria)

A

not made of cellulose

support and strengthens the cell

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8
Q

plasmid

A

small rings of DNA

contains additional genes

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9
Q

permanent vacuole

A

contains cell sap

contains sugar and salts in a solution

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10
Q

cell wall

A

made of cellulose

supports and strengthens the cell

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11
Q

chloroplasts

A

site of photosynthesis

contains chlorophyll, absorbs light energy

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12
Q

nerve cell

A

carry electrical signals

long branches to create a network

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13
Q

sperm cell

A

fertilise the egg
streamlined head that contains enzymes for digestion
tail and mirtchondria to swim

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14
Q

muscle cell

A

contracts to allow movement

contains mitochondria

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15
Q

root hair cell

A

absorb water and minerals from soil

large surface area

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16
Q

xylem cell

A

carry water and minerals

Transpiration

17
Q

phloem cell

A

carry glucose

hollow

18
Q

magnification (M) =

A

real size of object (A)

19
Q

What are stem cells

A

how a cell changes and becomes specialised undifferentiated cells are are called stem cells

20
Q

animal cell differentiation

A

early stages of development only for repair and replacement

21
Q

plant cell differentiation

A

all stages of life cycle are grouped together in meristems

22
Q

features of a microscope

A

eyepiece lenses
focusing wheel
stage
light source

Biology (9 decks)

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