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science 6 > Cells > Flashcards

Cells Flashcards

1
Q

Cell

A

The basic unit of structure and function in an organism
*its shape and size contribute to its function

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2
Q

Robert Hooke

A

used a microscope to discover cells

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3
Q

Microscope

A

tool used to enlarge small things

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4
Q

Cell theory

A

1.All organisms are made up of one or more cells
2.Cells are basic units of structure and function in all living things
3.All cells come from cells that already exist

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5
Q

Organelle

A

a tiny sructure in the cell that performs a funtion

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6
Q

Nucleus

A

directs all cell activities (similar to the brain of the cell)

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7
Q

Nucleolus

A

makes ribosomes

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8
Q

Chromatin

A

Contains DNA (genetic material that are the instructions for the cell)

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9
Q

cell membrane

A

selectively permeable membrane meaning it only lets specific materials move in and out of the cell

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10
Q

Cytoplasm

A

gel-like material inside the cell -cytosol is part of the cytoplasm

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11
Q

Endoplasmic recticulum

A

moves material around in the cell (like a highway)

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12
Q

Ribosomes

A

make protiens and translate messages

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13
Q

Golgi Body

A

the packaging organelle

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14
Q

Mitochondria

A

powerhouse of the cell because it breaks down food molecules and releases energy *does cellular respiration

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15
Q

Vacuole

A

storage area in the cell

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16
Q

Lysosome

A

digest wastes and worn-out cell parts¨cleans¨ the cell

17
Q

Chloroplast*

A

*contain a chemical called chlorohyll (absorbs the suns energy & makes the plant green) and allows the plant to make food for itself (like solar panels)
*does photosynthesis
*only in plants

18
Q

Cell wall

A

outer boundary of plant cell,rigid & tough,provides support and shape
-made of cellulose
ONLY IN PLANTS

19
Q

Prokaryotic

A

cells that do not have a nucleus,usually unicellular

science 6 (9 decks)

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