Which of the following are photoautotrophs?

bacteria found in the human digestive tract

deep-sea-vent organisms that make organic molecules using hydrogen sulfide as an energy source

filamentous molds growing on bread

Which statement concerning the role of redox reactions in photosynthesis and cellular respiration is true ?

In photosynthesis, carbon dioxide is reduced to form sugar, whereas in respiration, sugar is oxidized to form carbon dioxide.

In photosynthesis, carbon dioxide is oxidized to form sugar, whereas in respiration, sugar is reduced to form carbon dioxide.

Photosynthesis involves only oxidations, whereas respiration involves only reductions.

Photosynthesis involves only reductions, whereas respiration involves only oxidations.

Photosynthesis is an __________ process in which carbon is __________, whereas cellular respiration is an __________ process in which carbon is __________.

endergonic : reduced : exergonic : oxidized

exergonic : reduced : endergonic : oxidized

endergonic : oxidized : exergonic : reduced

endergonic : oxidized : endergonic : reduced

Cellular respiration and photosynthesis are similar in that both involve _____.

oxidation-reduction (redox) reactions

the release of O 2 into the atmosphere

Which of the following statements regarding the reduction of CO 2 to sugar during photosynthesis is true ?

Electrons (with accompanying hydrogen ions) are added to CO 2 during photosynthesis.

Electrons (with accompanying hydrogen ions) are removed from CO 2 during photosynthesis and added to water molecules to form sugar.

Hydrogen is added to CO 2 during photosynthesis.

Oxygen is removed from CO 2 during photosynthesis.

The conversion of NADP + to NADPH occurs with the assistance of __________.

electrons from water and energy from sunlight

electrons from carbon dioxide and energy from ATP

electrons from water and energy from ATP

electrons from carbon dioxide and energy from sunlight

The "photo-" part of the word photosynthesis refers to the __________, whereas "-synthesis" refers to __________.

light reactions that occur in the thylakoids; carbon fixation

Calvin cycle; the reactions in the stroma

reactions in the stomata; the reactions in the thylakoids

The light reactions of photosynthesis involve __________.

the conversion of NADPH to NADP +

Considering the wavelengths of light shown below, the pigments in the granum absorb mainly in which range?

green, which is why plants are green

Use the absorption spectrum graph and your knowledge of plant pigments to determine which three statements are true.

Visible light that is not absorbed by chloroplast pigments determines what color a plant will appear to your eye.

The orange and yellow colors of fall foliage are mostly due to carotenoids in the plants.

Different pigments in plant chloroplasts absorb light of different wavelengths.

If a plant absorbs light in green wavelengths, the plant will appear green to your eye.

A plant that contains chlorophyll a , chlorophyll b , and carotenoids will reflect more wavelengths than if it contained only chlorophyll a .

Which statement regarding the light reactions is true?

Electrons are supplied to chlorophyll a as it reduces the primary electron acceptor.

Photoexcited electrons pass from photosystem I to photosystem II.

Glucose is a product of the light reactions.

Electrons transported down the electron transport chain are deposited on ADP to form ATP. Submit

In simple summary form, the Calvin cycle requires an input of __________ for every product that is formed and the output product is __________, which is used for glucose synthesis.

3 CO 2 ; a three-carbon molecule

CAM plants have adapted to arid environments by closing their stomata during the day. However, photosynthesis still occurs. This is because __________.

CO 2 is fixed at night when the stomata are open

some CO 2 leaks through the closed stomata

CO 2 is fixed in the bundle-sheath cells

What is the potential benefit of photorespiration in plants?

It allows plant cells to reduce the buildup of oxygen gas without opening stomata.

It allows the shuttling of carbon to a second set of cells, concentrating carbon dioxide.

It creates proton gradients that are used later to supply energy needs.

It allows for the production of glucose and oxygen gas.

What is the main adaptive advantage of the C 4 and CAM photosynthesis strategies over the C 3 strategy?

They help the plant synthesize glucose efficiently under dry conditions.

They allow the plant to fix carbon under conditions of low CO 2 .

They allow the plant to fix carbon in cool conditions.

They make it possible for the plant to use the Calvin cycle at night.

C 4 and CAM plants have adapted to living in environments where water loss is a problem. Compared with C 3 plants, C 4 plants fix carbon dioxide _____, whereas CAM plants fix carbon at _____.

in different locations … different times of the day

during different seasons … different locations

at different times of the day … different locations within the leaf

at different times of the day … different seasons

Which of the following leaf types would be the most efficient at absorbing sunlight?

All of these leaf types are equally efficient at absorbing sunlight.

When chloroplast pigments absorb light, _____.

their electrons are raised from a ground state to an excited state

In the Calvin cycle carbon dioxide provides __________, whereas ATP and NADPH provide __________ and __________, respectively.

carbon; energy; high-energy electrons

energy; carbon; high-energy electrons

high-energy electrons; energy; carbon

You obtain the pigments called carotenoids in your diet when you eat carrots. Why do carotenoids appear yellow and orange?

They absorb blue/green light and reflect yellow and red wavelengths of light.

One cannot tell from this graph.

They absorb yellow and orange wavelengths best.

Their line on this absorption spectrum is colored orange

In most green plants, chloroplasts are

concentrated in a zone of leaf tissue called the mesophyll.

evenly distributed throughout the entire plant.

evenly distributed throughout the leaf tissue.

concentrated in a portion of the leaf called the stroma.

Chlorophyll is located in ________, which are found in ________, which are concentrated in ________.

thylakoids; chloroplasts; mesophyll

chloroplasts; thylakoids; mesophyll

mesophyll; chloroplasts; thylakoids

mesophyll; thylakoids; chloroplasts

Chapter 7: Photosynthesis

Authored by Ledasia Austin

Biology

University

NGSS covered

Used 3+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following equations represents photosynthesis?

6CO₂ + 6O₂ → C₆H₁₂O₆ + 6H₂O

C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O

C₆H₁₂O₆ + 6CO₂ → 6O₂ + 6H₂O

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which of the following organelles does photosynthesis take place?

Nucleus

Mitochondrion

Central vacuole

Chloroplast

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What connects the two photosystems in the light reactions?

An electron transport chain

The Calvin cycle

A chain of glucose molecules

Chlorophyll

Tags

NGSS.HS-LS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What two molecules are produced by the light reactions and used to power the Calvin cycle?

G3P and H₂O

ATP and NADPH

C₆H₁₂O₆ and O₂

C₆H₁₂O₆ and RuBP

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What provides electrons for the light reactions?

O₂

Light

H₂O

CO₂

Tags

NGSS.HS-LS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What provides the carbon atoms that are incorporated into sugar molecules in the Calvin cycle?

RuBP

Sucrose (C₁₂H₂₂O₁₁)

Carbon dioxide (CO₂)

G3P (C₃H₆O₃)

Tags

NGSS.HS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What transports electrons from the light reactions to the Calvin cycle?

An electron transport chain

FADH₂

NADH

NADPH

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Chapter 7: Photosynthesis

Which of the following equations represents photosynthesis?

In which of the following organelles does photosynthesis take place?

What connects the two photosystems in the light reactions?

What two molecules are produced by the light reactions and used to power the Calvin cycle?

What provides electrons for the light reactions?

What provides the carbon atoms that are incorporated into sugar molecules in the Calvin cycle?

What transports electrons from the light reactions to the Calvin cycle?

Photosynthesis occurs in the chloroplasts of a leaf. The first part of photosynthesis is called the light reactions, which begin with sunlight striking thylakoids within a chloroplast.
What molecules produced by the light reactions help drive the Calvin cycle?

You design an experiment to monitor the amount of photosynthesis occurring in a common plant model organism, Arabidopsis thaliana.
If your hypothesis is correct that photosynthesis will increase in trial B, which change would you expect to find in the inputs and outputs of trial B?

Which of the following are photoautotrophs?

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Similar Resources on Wayground

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Discover more resources for Biology

Chapter 7: Photosynthesis

Which of the following equations represents photosynthesis?

In which of the following organelles does photosynthesis take place?

What connects the two photosystems in the light reactions?

What two molecules are produced by the light reactions and used to power the Calvin cycle?

What provides electrons for the light reactions?

What provides the carbon atoms that are incorporated into sugar molecules in the Calvin cycle?

What transports electrons from the light reactions to the Calvin cycle?

Photosynthesis occurs in the chloroplasts of a leaf. The first part of photosynthesis is called the light reactions, which begin with sunlight striking thylakoids within a chloroplast.What molecules produced by the light reactions help drive the Calvin cycle?

You design an experiment to monitor the amount of photosynthesis occurring in a common plant model organism, Arabidopsis thaliana.If your hypothesis is correct that photosynthesis will increase in trial B, which change would you expect to find in the inputs and outputs of trial B?

Which of the following are photoautotrophs?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

Photosynthesis occurs in the chloroplasts of a leaf. The first part of photosynthesis is called the light reactions, which begin with sunlight striking thylakoids within a chloroplast.
What molecules produced by the light reactions help drive the Calvin cycle?

You design an experiment to monitor the amount of photosynthesis occurring in a common plant model organism, Arabidopsis thaliana.
If your hypothesis is correct that photosynthesis will increase in trial B, which change would you expect to find in the inputs and outputs of trial B?