bio chp 6 Flashcards

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1
Q

what is biomass

A

the material that living things are made of

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2
Q

plant cells use _____________________ to build biomass

A

chemical reactions

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3
Q

what two molecules do plants need to build biomass/ do photosynthesis?

A

carbon dioxide and water with the help of energy from sun/sunlight

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4
Q

the ________ energy enables plants to build larger molecules….

A

solar energy

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5
Q

….molecules such as __________ from the atoms in CO2 and water.

A

glucose

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6
Q

the reaction releases ___________ too.

A

oxygen

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7
Q

what is glucose

A

a kind of sugar that plants use to get energy and to make other substances like starch.

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8
Q

glucose molecules contain ________ energy. cells release energy from glucose using _____________.

A

stored. respiration

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9
Q

how much glucose do plants use and on what?

A

they use half to release energy and the rest of it (along with small minerals) for growth and repair

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10
Q

what is starch

A

glucose molecules that that are joined together so it is able to be stored for about 2-3 days

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11
Q

which cells do photosynthesis takes place in

A

palaside cells

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12
Q

what are stomata

A

small pores at the bottom of the leaf that CO2 diffuses into

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13
Q

what are spongy mesophyll

A

cells at the bottom of the leaf that helps gasses circulate

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14
Q

what are turgid cells

A

when the vacuole pushes the cell wall

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14
Q

what are flaccid cells

A

when the vacuole doesnt get enough water and shrinks so it doesnt push the cell wall

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15
Q

what is xylem

A

tube that transports water and minerals

16
Q

what is phloem

A

tube that transports food

17
Q

when does stomata close and open

A

they open the rest of the day and close at night when they dont need CO2

18
Q

what is a guard cell

A

they have special cell walls that push each other apart when they are turgid and close when they become flaccid. each stomata are surrounded by 2 of them