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WorksheetsPhotosynthesis and Cellular Respiration
Total questions: 15
Worksheet time: 8mins
Which process is represented by the arrow in the diagram?
Growth
Regulation
Respiration
Photosynthesis
Plant cells contain a green pigment called chlorophyll. Chlorophyll has a role in the process of photosynthesis. What does chlorophyll do?
Chlorophyll produces glucose from oxygen.
Chlorophyll produces oxygen from glucose.
Chlorophyll absorbs light energy from the sun.
Chlorophyll absorbs glucose from the storage in the plant.
When sunlight strikes a plant, the leaves capture most of that energy to use for photosynthesis. The image shows the process of photosynthesis in action. How do plants obtain the water and carbon dioxide they use for this process?
Carbon dioxide is absorbed from oxygen and water is taken in by the stems.
Water enters through the roots and carbon dioxide enters through the leaves.
Water enters as rain falls on the stems and carbon dioxide is absorbed from fertilizer.
Carbon dioxide is absorbed through the roots and the leaves absorb water from the air.
When sunlight strikes a plant, the leaves capture most of that energy to use for photosynthesis. The image shows the process of photosynthesis in action. Which of these materials helps plants use energy from sunlight?
Chlorophyll
Glucose
Roots
Soil
How do organisms get the energy they need?
Plants produce their own energy through photosynthesis, and animals get energy from eating other organisms.
Plants do not require energy because they do not move, and animals get energy by performing exercise.
Plants get energy from glucose produced in the soil, and animals get energy directly from sunlight.
Plants get energy from fertilizers, and animals get energy by drinking water.
During cellular respiration, organisms covert different kinds of food into glucose. Cells then break down the glucose to provide energy for life activities. Which of these substances is also produced during cellular respiration?
Carbon dioxide
Fat
Oxygen
Protein
Kristine goes to her neighborhood health club to exercise. The process of cellular respiration makes it possible for Kristine to run on the treadmill and to lift weights. What do her cells do during cellular respiration?
Convert kinetic energy into chemical energy.
Absorbs light energy through the chlorophyll in their chloroplasts.
Break down food molecules to release energy.
Combine water and carbon dioxide to produce.
Plants provide the materials that animals use in cellular respiration, and animals provide the materials needed by plants for photosynthesis. According to this diagram, which of these materials does cellular respiration provide that plants use in photosynthesis?
Energy
Carbon dioxide
Chloroplasts
Mitochondria
Plants provide the materials that animals use in cellular respiration, and animals provide the materials needed by plants for photosynthesis. What products of photosynthesis are starting material for cellular respiration?
Glucose and oxygen
Heat and energy
Carbon dioxide and water
Light energy and chlorophyll
Scientists believe that during its early formation, Earth's atmosphere contained little, it any oxygen. Fossil and rock records suggest that by about two billion years ago, Earth's atmosphere was oxygen rich and that organisms with complex cells existed. Many scientists think that these organisms released oxygen, changing the composition of Earth's atmosphere. Which process is the most scientifically plausible explanation for how the organisms released oxygen into Earth's atmosphere?
The cells produced sugar and oxygen during photosynthesis.
The cells gave off oxygen during cell division as they rapidly reproduced.
The cells broke down carbon dioxide to carbon and oxygen to obtain energy.
The cells combined nitrogen and hydrogen atoms by nuclear fusion to produce oxygen.
Many cellular processes are performed by cells. A typical cell and a common process is shown in the diagram. Which of the following is the best reason this cell is going through the process shown?
To reproduce another cell
To maintain homeostasis of the cell
To compete with another cell
To provide protection for the cell from the environment
During photosynthesis, plant cells use sunlight as an energy source. Animal cells cannot do this. What substance do plant cells have that animal cells lack so that plant cells can carry out photosynthesis?
ATP
Carbon dioxide
Chlorophyll
Oxygen
During photosynthesis, plants take in carbon dioxide, water and energy from the sun and produce carbohydrates and oxygen. Which of the following statements best explains how plants follow the Law of Conservation of Mass during photosynthesis?
The amount of each element in the reactants equals the amount of each element in the products.
The number of carbon dioxide molecules taken in exactly equals the number of carbohydrate molecules produced.
The plant uses the carbon dioxide gas, liquid water, and energy to produce a solid carbohydrate.
The plant’s mass does not increase or decrease as a result of photosynthesis.
In which way are photosynthesis and cellular respiration different?
Cellular respiration stores ATP, while photosynthesis releases ATP.
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
Photosynthesis releases energy, while cellular respiration stores energy.
Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.
What is the purpose of photosynthesis?
make glucose
make ATP
make light
release carbon dioxide
