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SC CH 4
Question | Answer |
---|---|
What molecule carries chemical energy that cells use for their function? | ATP |
Which of the following molecules found in the food we eat is most commonly broken down to make ATP? | carbohydrates |
Which of the following directly provides the energy needed for cell functions? | A phosphate group is removed from ATP |
Chemosynthesis is a process through which some organisms use energy from chemicals in their environment to build sugars in the absence of... | sunlight |
The water molecules labeled A in Figure 4.1 are going to the thylakoids to take part in which process? | light-dependent reactions |
Which of the following is a reactant in photosynthesis? | CO2 |
Where in plant cells are the energy-absorbing molecules for photosynthesis located? | thylakoids |
What happens to the sugars that are made during photosynthesis? | They can be used for cellular respiration |
The part of the cellular respiration that needs oxygen takes place inside the... | mitochondria |
Which process is best represented by the following chemical equation? sugars + oxygen --> carbon dioxide + water | cellular respiration |
Which of the following is best shown by Figure 4.2 below? | electron transport chain |
An electron transport chain that produces ATP is part of both the respiration process and... | photosynthesis |
In which process is lactic acid formed when there is not enough oxygen present for cellular respiration to take place? | fermentation |
Before cellular respiration, glucose must be broken down by the process of... | glycolysis |
Which of the following is a product of the Krebs cycle? | carbon dioxide |
Which of the following statements is true of ATP? | It transfers energy to cell processes |
The breakdown of which of the following provides the largest number of ATP per molecule? | lipids |
Which of the following reactions provides the chemical energy for most cell functions? | ATP - P --> ADP. The loss of a phosphate from ATP |
Which process would bacteria living near a heat vent on the ocean floor use to build carbon-based molecules, such as sugars? | chemosynthesis |
Which of the following best describes the molecules labeled B in Figure 4.1? | carbon dioxide entering the Calvin cycle |
Which chemical equation best represents the process of photosynthesis? | 6CO2 + 6H2O --> C6H12O6 + 6O2 |
What is the site of the photosystems in the light-dependent reactions of photosynthesis? | thylakoid membrane |
What is the name of the process that breaks glucose down into the pyruvate that is used in cellular respiration? | glycolysis |
The aerobic stages of cellular respiration take place in the... | mitochondria |
What is the main function of the electrons shown in Figure 4.2? | provide energy to pump hydrogen ions |
Which process is best represented by the chemical equation CHO6 + 6O --> 6CO + 6HO? | cellular respiration |
An electron transport chain is part of... | both photosynthesis and cellular respiration |
Which process allows glycolysis to continue in the absence of oxygen? | fermentation |
Which organisms use alcoholic fermentation to allow glycolysis to continue to produce ATP? | yeasts |
When pyruvate is a reactant in cellular respiration is means that... | oxygen is present |
Write a simple title for the diagram Figure 4.3 above | photosynthesis |
Name one high-energy molecule shown in the diagram Figure 4.3 that is used as an energy-carrier. | ATP, NADPH |
Write a simple title for the diagram Figure 4.4 above | Cellular Respiration and Fermentation |
Name one place in diagram Figure 4.4 where a high-energy molecule is transferring energy | NADH, ATP, FADH2 |
Where does the reactant for glycolysis come from? | sugar from food |
Describe a real-life situation in which the anaerobic part of the process above (Figure 4.4) might take place. Use the term fermentation in the your answer. | It might take place in strenuous exercise when your body is not getting a sufficient amount of oxygen causing the pyruvate to go through fermentation to produce lactic acid |