structures and functions in living organsisms 2.1 - 2.4 Flashcards

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1
Q

what is a cell wall and what does it do

A

rigid structure made of cellulose, surround the cell membrane

supports and strengthens the cell

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2
Q

what is the cell membrane and what is its function

A

forms the outer surface of the cell

controls substances going in and out of the cell

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3
Q

what is a nucleus and what does it do

A

it’s an organelle that contains genetic material
(DNA & RNA) that controls the cells activity

has its own membrane

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4
Q

what is a cytoplasm and what does it do

A

it’s a gel like substance where most of the cells chemical reactions occur

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5
Q

what are ribosomes and what do they do

A

small organelles where proteins are made in the cell

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6
Q

what are chloroplasts and what is their function

A

they make food for the plant

where photosynthesis occurs - contain green substances called chlorophyll which is used in photosynthesis

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7
Q

what is a vacuole and what does it do

A

large organelle that contains cell sap

helps to support the cell

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8
Q

what is mitrochondria and what do they do

A

small organelles where most of the reactions for aerobic respiration take place

respiration transfers energy that the cell needs to work

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9
Q

what are organelles

A

tiny structures within cells

can be eukaryotic or prokaryotic

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10
Q

what are tissues

A

a group of similar cells that work together to carry out a particular function

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11
Q

what are organs

A

a group of different tissues that work together to perform a function

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12
Q

what are systems

A

organs that work together to form organ systems

each does a different job

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13
Q

similarities between animal and plant cells

A

both multicellular

both include : nucleus, mitochondria, cytoplasm, cell membrane

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14
Q

differences between animal and plant cells

A

1) only plant cells have a fixed shape
2) plants have a large vacuole, animals have a small or no vacuole
3) only plants have a cell wall
4) plants store carbohydrates as starch - animal store carbohydrates as glycogen
5) plants contain chloroplasts to photosynthesise - animals dont

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