Which of the following is the correct equation for cellular respiration?

glucose + oxygen --> carbon dioxide + water + energy

energy + water --> carbon dioxide + water + glucose

glucose + carbon dioxide --> oxygen + water + energy

oxygen + water --> carbon dioxide + energy + glucose

Which statement about the carbon cycle is most true?

Carbon changes form, but the total amount on Earth remains the same.

Energy is destroyed when organic matter decays.

The total mass of carbon on Earth is always increasing.

Carbon is lost from the cycle when it enters the atmosphere.

Which model is a correct pathway for carbon in the carbon cycle?

atmosphere --> plants --> animals --> ground

ground--> animals --> plants --> atmosphere

plants --> ground --> animals --> atmosphere

animals --> plants --> atmosphere --> ground

A student is drawing a model of the carbon cycle. Which caption should he include to explain how herbivores contribute to the carbon cycle from the food they eat?

Herbivores eat plants, producing carbon dioxide during cellular respiration that is released into the atmosphere.

Herbivores eat plants, producing carbon dioxide during photosynthesis that is released into the atmosphere.

Herbivores use carbon dioxide from the atmosphere to produce oxygen during cellular respiration.

Herbivores use oxygen from the atmosphere to produce carbon dioxide during photosynthesis.

Marc wants to use the picture below to show how carbon cycles between organisms and the environment. Which parts of the carbon cycle is shown in the illustration?

photosynthesis and cellular respiration

cellular respiration and decomposition

decomposition and photosynthesis

Which statement describes photosynthesis?

Carbon dioxide and water combine to form glucose and oxygen.

Carbon dioxide and glucose combine to produce energy and water.

Carbon dioxide, glucose, and water are released to produce energy.

Carbon dioxide and water are released when glucose and oxygen combine.

What would happen if plants did not have enough carbon dioxide to engage in photosynthesis?

Plants would not be able to grow and produce oxygen for animals to breathe.

Plants would be able to grow and produce oxygen for animals to breathe.

Plant would be able to grow but would not be able to produce oxygen for animals to breathe.

Plants would not be able to grow but would be able to produce oxygen for animals to breathe.

What happens after a plant cell performs cellular respiration?

The cell releases stored energy.

How does cellular respiration directly benefit animals?

by storing energy in adenosine triphosphate (ATP)

After food is consumed, chemical nutrients are absorbed into the blood. These nutrients then enter mitochondria. Which reaction must occur next for the cell to carry on other activities?

Glucose and oxygen combine to produce high-energy molecules.

Glucose and water combine to produce high-energy molecules.

Oxygen, light, and glucose combine to produce high-energy molecules.

Oxygen, carbon dioxide, and glucose combine to produce high-energy molecules.

Cellular respiration occurs in the body 24 hours per day. During exercise, the rate of cellular respiration increases. Why does increased cellular respiration cause people to breathe faster?

More oxygen is needed to produce more energy, and more carbon dioxide waste must be removed from the body.

More water is lost from the body, and breathing hydrates the body.

More heat is generated by the body, and breathing cools the body quickly.

More nutrients are needed to produce more energy, and more oxygen must be removed from the body.

Organisms have specialized structures for different functions. Humans, for example, have an acid-filled stomach that helps break down swallowed food. Cells also have specialized structures for specific functions. What cellular structure is shown in the diagram and what does it do?

mitochondrion; cellular respiration

chloroplast; cellular respiration

All living organisms contain carbon. As organisms grow, they require large quantities of carbon to carry out life processes and make new cells. Where is the source of most of Earth's available carbon?

Carbon is constantly recycled from dead organisms back into the environment.

New carbon atoms are constantly being created by the process of photosynthesis.

Carbon atoms are constantly transferred from the Sun to Earth along with sunlight.

Carbon is constantly transported from the mantle to the crust by volcanic eruptions.

All life depends on the availability of usable energy. When is this energy released?

when animal cells carry out the process of respiration

when plants carry out the process of transpiration

when plants convert solar energy into chemical energy

when animal cells synthesize starch and carbon dioxide

During photosynthesis, plants use the energy in sunlight to drive a chemical reaction that joins carbon dioxide and water to produce oxygen and a sugar called glucose. This process is summarized in the illustration. What happens to the light energy that is used to carry out photosynthesis?

It is converted into chemical energy that is stored in glucose and oxygen.

It is given off as green light by the leaves of the plant.

It is used up and destroyed during the chemical reaction.

It is changed into matter that is used to make new leaves.

Photosynthesis, Cellular Respiration, Carbon Cycle Review

Authored by Tiffany Hawkins

Science

8th Grade

NGSS covered

Used 124+ times

Photosynthesis, Cellular Respiration, Carbon Cycle Review

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Plants are producers. This means they take in sunlight, water, and carbon dioxide and convert them into sugar and oxygen. What is the name of this process?

conservation

homeostasis

metabolism

photosynthesis

Tags

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct equation for photosynthesis?

water + oxygen --> carbon dioxide + glucose

water + carbon dioxide --> oxygen + light

water + carbon dioxide --> oxygen + glucose

water + glucose --> carbon dioxide + energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

1 min • 1 pt

One living plant leaf, still attached to the plant, is placed into a cup and covered with water. A light source is placed above the cup, shining into the cup of water so that the leaf receives the light. In moments, bubbles appear at the surface of the plant leaf.
Which statement explains what causes the bubbles to appear?

Photosynthesis is occurring and bubbles of carbon dioxide gas are being released by the surrounding area and absorbed into the plant leaf.

Photosynthesis is occurring and bubbles of carbon dioxide gas are being released by the leaf into the surrounding area.

Photosynthesis is occurring and bubbles of oxygen gas are being released into the surrounding area.

Photosynthesis is occurring and bubbles of air are entering the water fro the area around the plant.

Tags

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Margie illustrated the process of photosynthesis, as shown.
Which mistake did she make?

The arrow for sugar should point away from the plant.

The arrow for carbon dioxide should point away from the plant.

The arrows for carbon dioxide and sugar should point away from the plant.

The arrow for carbon dioxide should point away from the plant, and the arrow for oxygen should point toward the plant.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where does a plant obtain energy to carry out photosynthesis?

chlorophyll

light

soil

sugras

Tags

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement describes the role of chlorophyll in the production of food during photosynthesis?

Chlorophyll combines with nitrogen to make food.

Chlorophyll converts oxygen and carbon dioxide into food.

Chlorophyll releases energy from sunlight to produce food and carbon dioxide.

Chlorophyll absorbs energy from sunlight and converts it into the stored energy in food.

Tags

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement best explains the process of cellular respiration?

Glucose and another product are formed when carbon dioxide and water are combined.

Oxygen and another product are formed when carbon dioxide and water are combined.

Bonds are broken within the carbon dioxide molecules, providing energy and releasing oxygen.

Bonds are broken within the glucose molecules, providing energy and releasing carbon dioxide.

Tags

NGSS.MS-LS1-7

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Photosynthesis, Cellular Respiration, Carbon Cycle Review

Plants are producers. This means they take in sunlight, water, and carbon dioxide and convert them into sugar and oxygen. What is the name of this process?

What is the correct equation for photosynthesis?

Margie illustrated the process of photosynthesis, as shown.Which mistake did she make?

Where does a plant obtain energy to carry out photosynthesis?

Which statement describes the role of chlorophyll in the production of food during photosynthesis?

Which statement best explains the process of cellular respiration?

Ally is a junior high student who has just learned about the carbon cycle in school. She is concerned about the environment and decides to construct a model of the carbon cycle in her community.What could both add and remove carbon from the atmosphere in the model?

Which of the following is the correct equation for cellular respiration?

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Margie illustrated the process of photosynthesis, as shown.
Which mistake did she make?

Ally is a junior high student who has just learned about the carbon cycle in school. She is concerned about the environment and decides to construct a model of the carbon cycle in her community.
What could both add and remove carbon from the atmosphere in the model?