WorksheetsPhotosynthesis, Cellular Respiration, Carbon Cycle Review
Total questions: 30
Worksheet time: 19mins
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
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
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.
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.
Where does a plant obtain energy to carry out photosynthesis?
chlorophyll
light
soil
sugras
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.
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.
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?
a car
a deer
an insect
a tree
Which of the following is the correct equation for cellular respiration?
energy + water --> carbon dioxide + water + glucose
glucose + carbon dioxide --> oxygen + water + energy
glucose + oxygen --> carbon dioxide + water + energy
oxygen + water --> carbon dioxide + energy + glucose
Callie did a lab during which she investigated the difference in cellular respiration rates between two different types of corn: germinating and non-germinating. A germinating seed is one from which a plant has started to grow. A non-germinating seed is usually dry and a new plant has not yet emerged. The data that she gathered are displayed in the graph.
In addition to carbon dioxide, which of the following should Callie expect the seeds to give off as a waste product from performing cellular respiration?
glucose
energy
water
oxygen
Which statement about the carbon cycle is most true?
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.
Carbon changes form, but the total amount on Earth remains the same.
Which model is a correct pathway for carbon in the carbon cycle?
ground--> animals --> plants --> atmosphere
plants --> ground --> animals --> atmosphere
atmosphere --> plants --> animals --> ground
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?
cellular respiration and decomposition
combustion and decomposition
decomposition and photosynthesis
photosynthesis and cellular respiration
Each arrow in the diagram of the carbon cycle below represents a process in that cycle.
Which arrow represents cellular respiration?
1
2
3
4
Which of the following pairs are products of photosynthesis?
sugar and oxygen
chlorophyll and protein
light energy and nitrogen
water and carbon dioxide
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 be able to grow and produce oxygen for animals to breathe.
Plants would not 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 rests.
The cell absorbs water.
The cell releases oxygen.
The cell releases stored energy.
How does cellular respiration directly benefit animals?
by producing glucose
by consuming oxygen
by forming carbon dioxide
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 water combine to produce high-energy molecules.
Glucose and oxygen 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 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.
More oxygen is needed to produce more energy, and more carbon dioxide waste 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?
chloroplast; cellular respiration
mitochondrion; photosynthesis
chloroplast; photosynthesis
mitochondrion; cellular respiration
A biologist is conducting an experiment to determine if the amount of glucose present affects the amount of gas released by yeast cells through cellular respiration. If there is an increase in the amount of glucose in a yeast culture, then the respiration rate will also increase. The biologist puts the same amount of yeast in two bottles, then adds 5 grams of glucose to one bottle and 10 grams of glucose to the other bottle. Under constant temperature, the yeast goes through the process of cellular respiration for 30 minutes. The diagram shows the amount of gas collected from cellular respiration.
What is the gas collected in the balloons?
oxygen
hydrogen
carbon dioxide
helium
Cellular respiration releases the energy stored in the bonds of food molecules and makes it available for cellular work. What is the original source of this energy?
glucose
the sun
water
carbon dioxide
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 plants carry out the process of transpiration
when animal cells carry out the process of respiration
when plants convert solar energy into chemical energy
when animal cells synthesize starch and carbon dioxide
Photosynthesis and cellular respiration demonstrate the conservation of mass and energy. What do chloroplasts produce that mitochondria use to make energy?
oxygen and carbon dioxide
carbon dioxide and glucose
oxygen and glucose
water and oxygen
Bacteria and fungi are important to the carbon cycle. Which of the following processes is most associated with bacteria and fungi?
combustion
decomposition
photosynthesis
transpiration
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 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.
It is converted into chemical energy that is stored in glucose and oxygen.
