What does the cholorplast do with the H+ concentration gradient that it creates during the light dependent reactions?

It lets H+ flow through ATP Synthase to make ATP from ADP and P

It lets H+ flow out of the thylakoid lumen into the stroma

It lets H+ flow out of the stroma into the thylakoid lumen

It lets H+ flow through NADPH Synthase to make NADPH from NADP+

Atrazine is a chemical that blocks the electron from leaving photosystem II. What would be the immediate effect on the plant?

Blocks electron harvesting from water

Where is the oxygen produced during photosynthesis?

Between the chlorophyll membranes

Why would a poison that inhibits RuBP production in the Calvin cycle also inhibit light reactions?

The light reactions would run out of NADP+ and ADP

The light reactions would run out of O2

The light reactions would run out of G3P

Tje light reactions would run out of NADPH and ATP

The primary purpose of the Calvin Cycle is

To transfer energy from the energy intermediates to glucose

To produce NADP+ for the light reactions

To absorb CO2 from the atmosphere

What will happen to the light reactions if the Calvin Cycle is inhibited?

The light reactions will stop because they run out of NADP+ and ADP

The light reactions will stop because they run out of ATP and NADPH

The light reactions will continue as long as there is light available since they occur before the Calvin Cycle

•Jan Baptista van Helmont did an important experiment related to photosynthesis. He weighed a small willow tree and a pot of soil. Jan then planted the tree in the pot. Over the course of five years, he added only water to the pot. At the end of five years, he took the dry weight of the tree (dry weight, excludes water) and found that it had gained 74,400 g. He weighed the soil (dry weight), and it was only 57 g less. Where did the additional 74,350 grams come from?

From the Glucose made by the plant during photosynthesis. Glucose is used to help the plant grow

Still from the soil. Plants use nutrients in the soil to grow

From the air. Oxygen is taken in through the stomata of the plant and helps the plant grow

From the air. CO2 is taken in through the stomata of the plant and helps the plant grow

Biosphere 2 is a research facility designed to be an artificial, closed ecosystem. The closed nature of the biosphere allows precise monitoring of various factors like gasses and other ecosystem processes. The graph shows the amount of carbon dioxide in Biosphere 2 over a typical 24 hour period. What is the relationship between the time of day and the amount of carbon dioxide in the research facility?

CO2 levels decrease from 8am until 4pm because plants are exposed to sunlight during these hours

CO2 levels stay constant from 8am until 4pm because plants are exposed to sunlight during these hours

CO2 levels increase from 4pm to 12am because plants are exposed to sunlight during these hours

•One of the roles of the National Oceanic and Atmospheric Administration of the United States (NOAA) is to monitor concentrations of carbon dioxide in the atmosphere over time. The data below is from the NOAA Mauna Loa Observatory in Hawaii. •In the graph showing Recent Monthly Means, why do the levels of CO2 fluctuate across each year? When is it higher and when is it lower?

CO2 levels fluctuate across each year because plants are more active in warmer months and pull Carbon out of the air to do photosynthesis

CO2 levels fluctuate across each year because we burn less fossil fuels during the winter/summer

CO2 levels fluctuate across each year because CO2 levels are higher in the warmer weather

•Fossil fuels are long chains of carbon that formed from the remains of dead plants about 300 million years ago during the Coal Age Carboniferous Era. Use this information to explain the data in the graph showing carbon dioxide levels since measurements began in 1960. (choose more than 1)

CO2 levels have gone up because there are fewer plants to take in CO2

CO2 levels have gone up since 1960 because humans are burning more fossil fuels each year, which results in more CO2 in the atmosphere

CO2 levels have gone up each year because humans have increased their dependence on plastic. Plastic is made by burning fossil fuels, which releases CO2 into the atmosphere

CO2 levels have gone up because CO2 levels naturally fluctuate

Cell respiration and photosynthesis

Authored by Claire Guzinski

Biology

University

NGSS covered

Used 16+ times

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Select the correct order of cellular respiration

Glycolysis, Oxidative Phosphorylation, Citric Acid Cycle, Breakdown of Pyruvate

Citric Acid Cycle, Breakdown of Pyruvate, Glycolysis, Oxidative Phosphorylation

Glycolysis, Breakdown of Pyruvate, Citric Acid Cycle, Oxidative Phosphorylation

Glycolysis, Citric Acid Cycle, Oxidative Phosphorylation, Breakdown of Pyruvate

Tags

NGSS.HS-LS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The process by which redox reactions are used to transfer energy to a hydrogen ion gradient is known as

Glycolysis

The electron transport chain

Citric acid cycle

Fermentation

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The process by which NAD+ is regenerated in the absence of Oxygen

Glycolysis

Fermentation

Oxidative phosphorylation

Citric acid cycle

Tags

NGSS.HS-LS2-3

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The process by which Acetyl-CoA is broken down to CO2 and energy is stored in ATP, NADH, and FADH2 is known as

Citric acid cycle

Oxidative Phosphorylation

Electron transport chain

Glycolysis

Tags

NGSS.HS-LS1-7

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following is the final electron acceptor at the end of the Electron transport chain?

ATP

Oxygen

Carbon Dioxide

NADPH

Tags

NGSS.HS-LS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

occurs in the cytosol and ___ occurs in the mitochondrial matrix

Glycolysis, the citric acid cycle

ATP synthase, glycolysis

The Citric acid cycle, ATP synthase

Tags

NGSS.HS-LS2-3

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the primary function of the light reactions?

To produce Oxygen

To break down water

To produce glucose

To store light energy in ATP and NADPH

Tags

NGSS.HS-LS1-5

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Cell respiration and photosynthesis

Select the correct order of cellular respiration

The process by which redox reactions are used to transfer energy to a hydrogen ion gradient is known as

The process by which NAD+ is regenerated in the absence of Oxygen

The process by which Acetyl-CoA is broken down to CO2 and energy is stored in ATP, NADH, and FADH2 is known as

Which of the following is the final electron acceptor at the end of the Electron transport chain?

________ occurs in the cytosol and ___________ occurs in the mitochondrial matrix

What is the primary function of the light reactions?

What does the cholorplast do with the H+ concentration gradient that it creates during the light dependent reactions?

Atrazine is a chemical that blocks the electron from leaving photosystem II. What would be the immediate effect on the plant?

Where is the oxygen produced during photosynthesis?

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occurs in the cytosol and ___ occurs in the mitochondrial matrix