Copyright 2014 Edmentum - All rights reserved. Biology Photosynthesis and Cellular respiration Blizzard Bag

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1 Copyright 2014 Edmentum - All rights reserved. Biology Photosynthesis and Cellular respiration Blizzard Bag Examine the picture of the chloroplast below. Chloroplasts contain flattened disks known as thylakoids that are stacked into grana. In the thylakoids are proteins that A. help capture light from the Sun during the process of cellular respiration. B. help capture light from the Sun during the process of photosynthesis. C. help capture oxygen from the atomosphere during the process of photosythesis. D. help capture oxygen from the atmosphere during the process of cellular respiration. 2. What molecule acts as an electron donor in the light reactions of photosynthesis? A. H2O B. CO2 C. NADP + D. O2 3. In the light reactions of photosynthesis, light energy is converted into chemical energy in which organic molecules? A. ATP and NADH B. ATP only C. ATP and NADPH D. ATP and O2

2 4. Photosynthesis occurs in two sets of reactions within the chloroplast - light reactions and dark reactions. Light reactions occur in the grana, or stacks of membrane-bound disks (thylakoids), found in the chloroplast. What is the main purpose of photosynthetic light reactions? A. to produce water using oxygen from the air B. to change light energy into the chemical energy of ATP and NADPH C. to directly convert the light energy into glucose molecules D. to produce sugar molecules using ATP, NADPH, and CO2 5. Mitochondria are organelles found in both plant and animal cells. These organelles are rodshaped with cristae and highly folded inner membranes. Mitochondria are responsible for A. transporting materials. B. cellular respiration. C. waste disposal. D. storage of genetic information. 6. A student isolates an unknown bacterial sample from the bottom of a swamp area. The student discovers that this species of bacteria is able to live and grow in an oxygen-free environment, but it requires a nitrate-rich soil. Which of the following respiration pathways is this species of bacteria most likely using? A. lactic acid fermentation B. aerobic respiration C. anaerobic respiration D. ethyl alcohol fermentation

3 7. Which of the following is a final product of aerobic respiration? A. pyruvate B. oxygen C. carbon dioxide D. glucose 8. Photosynthesis occurs in two sets of reactions within the chloroplast - light reactions and dark reactions. Dark reactions occur in the stroma, or the thick fluid located in between the grana, in the chloroplast. What is the main function of photosynthetic dark reactions? A. to use CO2, energy, and H + ions from ATP and NADPH to make sugar B. to make electrons leave the chlorophyll and phosphorylate ADP to form ATP C. to split water to release oxygen into the air D. to split water to release hydrogen ions and form NADPH 9. Which organelle in the plant cell shown above makes glucose from sunlight? A. mitochondrion B. nucleus

4 C. cell wall D. chloroplast 10. Cellular respiration can occur both in the presence of oxygen, in an aerobic environment, or without oxygen present, in an anaerobic environment. During aerobic cellular respiration, there are several processes that must occur in order to convert food into energy. Which of the following processes is involved in aerobic cellular respiration? A. the electron transport chain B. glucose production C. lactic acid fermentation D. all of these 11. During photosynthesis, plant cells take in water (H2O) and carbon dioxide (CO2) and release oxygen (O2). How is this different from what takes place during aerobic respiration? A. During aerobic respiration, cells take in O2 and release CO2, H2O, and ATP. B. During aerobic respiration, the mitochondria form CO2 during the process of fermentation. C. During aerobic respiration, O2 is inhaled and CO2 and H2O are exhaled. D. During aerobic respiration, cells use ATP to convert insulin into glucose and CO What is the function of stomata in plants? A. to transport materials from the soil to the leaves B. to allow gas exchange between the environment and the inside of leaves C. to absorb light energy from the Sun D. to transport materials from the leaves to the soil

5 13. Which of the following best explains why aerobic respiration is more energy efficient than anaerobic respiration? A. Aerobic respiration occurs in one step, while anaerobic respiration requires several steps. B. Aerobic respiration produces more ATP per molecule of glucose. C. Aerobic respiration produces less carbon dioxide per molecule of glucose. D. Aerobic respiration fully breaks down glucose, while anaerobic respiration does not. 14. What is the name of the cell organelle that is shaped like a flattened disc, contains stroma and stacks of thylakoids, and is the site of photosynthesis? A. mitochondrion B. chloroplast C. ribosome D. vacuole 15. In which organelle does photosynthesis take place? A. endoplasmic reticulum B. nucleus C. mitochondrion D. chloroplast