Cell Transport Mr Rhea Grade 7 Flashcards

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1
Q

photosynthesis

A

the process by which a cell captures energy in sunlight and uses it to make food

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2
Q

photo

A

Greek word that means “light”

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3
Q

synthesis

A

Greek word which means “putting together”

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4
Q

chloroplast

A

found in plant cells; capture energy from sunlight

-they are green organelles in plant cells

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5
Q

chlorophyll

A

main photosynthetic pigment in chloroplasts

-they capture light energy and uses it to power the second stage of photosynthesis

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6
Q

autotroph

A

an organism that makes it own food

example = plant

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7
Q

heterotroph

A

organism that cannot make its own food

examples= zebras, lion

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8
Q

respiration

A

process by which cells obtain energy from glucose

-cells break down simple food molecules such as sugar and release the every they contain

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9
Q

mitochondria

A

rod-dhaped cell structures that convert energy in food molecules to energy the cell can use to carry out its functions

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10
Q

selectively permeable

A

same substances can pass through the membrane while others cannot

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11
Q

diffusion

A
  • main method by which small molecules move across the cell membrane
  • process by which molecules move from an area of higher concentration to an area of lower concentration
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12
Q

osmosis

A

the diffusion of water molecules through a selectively permeable membrane

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13
Q

equilibrium

A

a state in which the concentration of molecules on both sides of the cell membrane are the same

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14
Q

passive transport

A

the movement of dissolved materials through a cell membrane that requires the cell to use no energy

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15
Q

active transport

A

the movement of material through a cell membrane that does require the cell to use energy

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