Photosynthesis review !!

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Photosynthesis Review Honors Biology

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here's a little review thing for you to study with! :) it doesnt have everything but its a good start

Transcript of Photosynthesis review !!

Page 1: Photosynthesis review !!

Photosynthesis Review

Honors Biology

Page 2: Photosynthesis review !!

Organisms that can synthesize their own food from inorganic

materials are called_____.

Autotrophs

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All ______ rely on autotrophs for food, since autotrophs are the

producers of the food web.

Heterotrophs

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The electromagnetic spectrum ranges from gamma radiation to

_______ waves.

Radio

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On the visible spectrum, energy content of light is greatest for

______.

Violet light

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What two things must go into the light reactions?

Water, Light

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The color _____ has the shortest wavelength.

Violet

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The color _____ has the lowest energy.

Red

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Which colors are most useful in photosynthesis?

Red, violet, and blue

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What type of wavelengths do high-energy photons have?

Short wavelengths

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Where on the electromagnetic spectrum is visible light found?

In a small portion in the middle of the spectrum. Ranging from about

400 nm- 750 nm

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Which of these phosphorylates ADP to make ATP? What is it called?

E- ATP Synthase

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_____ releases energy that is used to create the H+ gradient in the thylakoid. What is it called?

B- Electron transport chain

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Water is split into oxygen and H+ by ____. What is it called?

A- Photosystem II

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Electrons leaving ___ will be used to reduce NADP+. Name?

C- Photosystem I

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Where on this diagram would chlorophyll be found?

A and C- The Photosystems

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What is D?

Thylakoid space or compartment.

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What limits the progress of the Calvin cycle?

Carbon dioxide, light, temperature (enzymes!).

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Carbon fixation involves adding carbon dioxide to ____.

RuBP

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After PGA is phosphorylated, it is reduced by ______.

NADPH

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How many carbon dioxide molecules are needed to make

one molecule of glucose?

6

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How many ATP are required to regenerate RuBP from PGAL?

3

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How many ATP are necessary to phosphorylate PGA?

6 ATP

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NADPH and ATP are used in the light _________ reactions of

photosynthesis.

Independent (Calvin Cycle)

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Water is split and oxygen is released in which reactions of

photosynthesis?

Light-dependent reactions

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What molecule is the oxygen formed from during

photosynthesis?

Water

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During chemiosmosis, the H+ concentration is higher in the

____ of the chloroplast.

Thylakoid space.

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During chemiosmosis hydrogen ions flow _____ their concentration gradient through _____________ in

the thylakoid membrane.

Down; ATP synthase

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In the Calvin cycle, carbon dioxide is (oxidized/reduced) to

form PGAL.

Reduced

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Five molecules of PGAL are used to re-form _____ molecules of RuBP.

3

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Water vapor exits and carbon dioxide enters through the ___ in

the leaf.

Stomata.

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When photons hit the photosystems electrons from ____ molecules are excited.

Chlorophyll

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To make one molecule of glucose, how many ATP are

necessary?

18 ATP

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How many carbons does a molecule of RuBP have?

5

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Carbon fixation occurs in the ___ of the chloroplast.

Stroma

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Why is light necessary in photosynthesis?

It energizes the electrons.

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What is the equation for photosynthesis?

6CO2 + 6H2O + light energy C6H12O6 + 6O2