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WorksheetsUnit 9 Review (Cellular Energy)
Total questions: 19
Worksheet time: 10mins
Animals, like bears, hedgehogs, and frogs, hibernate during the cold winter months to conserve energy. Hibernation allows them to survive for long periods of time without needing to eat. Their bodies get nutrients and energy during hibernation by burning stored fat. In order for hibernation to work, the animal would need to eat a lot of what biomolecule first?
Carbohydrates
Lipids
Proteins
Nucleic Acids
Scientists in Australia have developed a routine for athletes to follow the day before a big race. This routine includes consuming a large amount of carbohydrates. This type of routine is known as "carboloading".Why might consuming a large amount of carbohydrates be beneficial for the athlete during the race?
Carbohydrates will help the athlete build extra muscle.
Carbohydrates will provide energy to last the race.
Carbohydrates will speed up reactions to maintain homeostasis.
Carbohydrates will decrease the chances of cramping.
Which macromolecule would you want to eat before starting a workout to provide immediate energy?
Carbohydrate
Lipid
Nucleic Acid
Protein
Lactose is a sugar found in dairy products. The body converts it into a molecule that can be used to make ATP energy. What type of biomolecule is lactose?
Carbohydrate
Lipid
Nucleic Acid
Protein
Carbohydrates and lipids both serve as a source of energy for organisms. What kind(s) of energy are provided by carbohydrates and lipids?
Lipids provide a quick source of energy, while carbohydrates provide long-term energy storage.
Carbohydrates provide a quick source of energy, while lipids provide long-term energy storage.
Both carbohydrates and lipids provide a quick source of energy.
Both carbohydrates and lipids provide long-term energy storage.
Students placed yeast cells into a test tube. They added sugar solution to the test tube and placed a rubber stopper on the end. They left the test tube at room temperature to examine after reading about yeast. Students discovered through reading that yeast are single-celled fungi that contain many mitochondria, but chloroplasts are absent. What most likely occurred in the test tube while the students were reading?
Yeast produced carbon dioxide due to cellular respiration.
Yeast produced carbon dioxide due to photosynthesis.
Yeast produced oxygen due to cellular respiration.
Yeast produced oxygen due to photosynthesis.
What chemical involved in the processes of photosynthesis has the greatest number of atoms per molecule?
Carbon dioxide
Glucose
Oxygen
Water
Dehydration synthesis is the process of chemical reactions that combine smaller molecules into larger molecules. What is an example of dehydration synthesis in cell respiration?
The formation of carbon dioxide from the reaction of oxygen and sugar
The formation of water from the reaction of oxygen and sugar
The formation of oxygen from the reaction of carbon dioxide and water
The formation of ATP from the reaction of ADP and phosphate
What occurs inside of a cell while it is performing the process of photosynthesis?
Sugar is broken down to generate adenosine triphosphate (ATP)molecules that are used for energy.
The negative charge inside of the cell is used to increase the concentration chemicals inside of the cell.
Light reactive chemicals combine carbon dioxide (CO2) and water to form glucose molecules that are stored as food.
The cell membrane forms around air bubbles to create a vacuole that is used to separate the oxygen from the rest of the air.
What occurs inside of a cell while it is performing the process of respiration?
Sugar is broken down to generate adenosine triphosphate (ATP) molecules that are used for energy.
The negative charge inside of the cell is used to increase the concentration chemicals inside of the cell.
Light reactive chemicals combine carbon dioxide (CO2 ) and water to form glucose molecules that are stored as food.
The cell membrane forms around air bubbles to create a vacuole that is used to separate the oxygen from the rest of the air.
During cellular respiration in mitochondria, the organelle breaks down glucose to release chemical energy. How is the chemical energy used?
The chemical energy is used to form ATP bonds.
The chemical energy is used to form more glucose.
The chemical energy is converted into carbon dioxide.
The chemical energy is converted into oxygen.
Ribulose biphosphate carboxylase is a chemical that aides in the process of photosynthesis. Ribulose biphosphate carboxylasebreaks down carbon dioxide and bonds carbon atoms together to begin the formation of sugars. Without ribulose biphosphate carboxylase, photosynthetic organisms would not be able to produce as much food. Even though ribulose biphosphate carboxylase is involved in assisting chemical reactions, its chemical structure is unchanged.
Based on the information about the function of ribulose biphosphate carboxylase, what is the best classification of the chemical?
Carbohydrate
Enzyme
Lipid
Nucleic acid
Which of the following best explains the change that occurs when salivary amylase enters the stomach?
Amylase is an enzyme that helps break down complex carbohydrates into simple carbohydrates. This enzyme is present in the saliva in the mouth. When salivary amylase is in the stomach, it stops functioning.
Amylase is used up in digestion of proteins in the stomach.
The alkaline pH of the stomach inhibits the amylase.
Amylase is denatured in the acidic pH in the stomach.
All complex carbohydrates are already broken down when swallowed.
Which of the following correctly pairs a biomolecule to its function?
Enzyme: makes cell membrane's phospholipid bilayer
Cellulose: makes the cell walls of all plant cells
Cholesterol: stores genetic information
Glucose: increases the rate of a reaction
What is one way that cellular respiration differs from photosynthesis?
The energy conversion in cellular respiration takes place in the chloroplast.
The main source of energy in cellular respiration is glucose.
The main source of chemical energy in cellular respiration is water.
The final product of cellular respiration is electromagnetic radiation.
What is the purpose of ATP in both cellular respiration and photosynthesis?
To breakdown glucose to release energy
To work as an enzyme
To absorb electrons from water
To transfer energy from one molecule to another
What do aerobic and anaerobic cellular respiration have in common?
Both are metabolic pathways by which cells obtain or use energy.
Both require oxygen to break molecular bonds for ATP production.
Both processes occur in all living organisms.
Both produce relatively equal amounts of ATP.
The compound synthesized during photosynthesis is —
H2O
C6H12O6
CO2
O2
Many plants that grow on land store energy in the form of starch. When the plants need energy, the molecules of starch can be broken down into monosaccharides.
What type of biomolecule is starch?
Protein
Carbohydrate
Lipid
Enzyme
