1. Why is cellular respiration called an aerobic process? 2 ..., Slides of Cell Biology

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1. Why is cellular respiration called an aerobic process?
2. What happens during glycolysis?
3. What happens to the molecules of glycolysis when oxygen is available?
4. Where is the electron transport chain located? Define the words in the boxes. On the line across each arrow, write a phrase that describes how the words in the boxes are related to one another. Fill in the blank: Virtually all forms of life depend on a molecule know as as their primary energy carrier. Plants produce this during , but plants and all other organisms can also produce ATP through chemical pathways that degrade food molecules. The main degradative pathway requires free oxygen and is called . There are three stages of aerobic respiration. In the first stage, , glucose is partial degraded to. By the end of the second stage, which includes the cycle, glucose has been completely degraded to carbon dioxide and. Neither of the first two stages produce much

Label each item that has a box or a line.

True or False: Write true if the statement is true or false if the statement is false. ______ All organisms on earth will die without a constant supply of oxygen. ______ Energy released during the breakdown of cells is used to synthesize ATP. ______ The energy released from the breakdown of glucose can be used to recharge ATP. ______ When you exhale, carbon dioxide is a released. ______ When glucose is broken down during cellular respiration, a product is light energy. ______ In eukaryotic cells, glycolysis occurs in the mitochondrion. ______ All ATP synthesis in a eukaryotic cell happens in the mitochondria. ______ Carbon dioxide is a product of both cellular respiration and photosynthesis. ______ An electron transport chain is the first step/stage in cellular respiration. ______ You are considered a heterotroph because you make your own food. ______ Only fats are used as the energy source for glycolysis. ______ Glucose gets anabolically made during glycolysis. ______ One of the final products of glycolysis is a five-carbon compound. ______ Oxygen is the most abundant component of the earth’s atmosphere. ______ Aerobic respiration evolved before oxygenic photosynthesis. ______ In eukaryotic cells, if oxygen is present, then pyruvate is fermented to ethanol. ______ The citric acid cycle occurs in the cytoplasm. ______ CO 2 is produced during the Citric Acid Cycle. ______ NADH is formed to help maintain homeostasis. ______ The inner mitochondrial membrane increases the surface area of the membrane. ______ NADH donates electrons to the electron transport chain in mitochondria. Multiple Choice. Choose the best answer for each question and either circle or highlight to show your choice.

1. Cows need to breathe because A) they need carbon dioxide from the air for cellular respiration. B) they need oxygen from the air for cellular respiration. C) they need to expel methane, a waste product of cellular respiration, from their lungs. D) they need to expel nitrogen gas, a waste product of cellular respiration, from their lungs.
2. Glycolysis would quickly halt if that process ran out of , which serves as the hydrogen and electron acceptor. A) NADP+ B) ADP C) NAD+ D) H 2 O
3. The ultimate electron acceptor in aerobic respiration is A) NADH B) Carbon dioxide C) Oxygen D) ATP
4. In mammals, oxygen gas diffuses from the air into the bloodstream via the A) cells lining the nose. B) kidney. C) liver. D) lungs.

5. In the chemical reaction of glycolysis, the reactants include; A) Glucose, NAD, ATP. B) Glucose, NADH C) light energy and heat. D) Hydrogen, water, heat
6. Organisms that are producers (such as plants) A) Are only heterotrophs B) Are only autotrophs C) Are capable of both auto and heterotrophy processes D) None of these.
7. A typical eukaryotic cell that would have the greatest amount of mitochondria would be. A) liver B) muscle C) fat D) skin
8. The reaction is the overall reaction of A) alcoholic fermentation. B) wood burning. C) glycolysis. D) the citric acid cycle.
9. In cellular respiration, carbon dioxide is released A) during the first half of glycolysis. B) during the Citric Acid Cycle. C) during the ETC. D) none of the above
10. One of the products of glycolysis is A) GTP. B) glycogen. C) starch. D) none of the above
11. The net yield of ATP from the breakdown of a single molecule of glucose is… A) 2. B) 0. C) 4. D) 1.
12. The function of oxygen in the ETC is A) to accept electrons that have passed through the ETC of the mitochondria. B) to combine with carbon dioxide and be excreted. C) to donate electrons to the ETC. D) all of the above
13. An electron transport chain that produces ATP is part of both the cellular respiration process and A) glycolysis. B) fermentation. C) photosynthesis. D) the Krebs cycle.
14. Which of the following is a product of the Krebs cycle? A) carbon dioxide B) oxygen C) lactic acid D) glucose
15. Which of the following is best shown by the diagram to the right? A) glycolysis B) diffusion C) the Krebs cycle D) electron transport chain
16. ATP is a compound that is synthesized when which occurs? A) Chemical bonds between carbon atoms are formed in photosynthesis. B) Energy stored in chemical bonds is released during cellular respiration. C) Energy stored in nitrogen is released forming amino acids. D) Digestive enzymes break amino acids into smaller parts.
17. Which step is the same in both forms of fermentation, as well as in cellular respiration? A) formation of carbon dioxide and alcohol B) formation of carbon dioxide and water C) breakdown of pyruvic acid D) breakdown of glucose

Use the word bank to fill in the flow chart on the process of cellular respiration. Which makes Which makes And ends with Which starts with When oxygen is not present When oxygen is present Which Produces Which Produces

Cellular Respiration

Begins With a molecule of Which is broken down during Which Creates 2 molecules of Such as Occurs in the

WORD BANK

1 ATP per pyruvate 2 ATP ~30 ATP 0 ATP Electron transport chain Mitochondrion Cytoplasm Fermentation Glycolysis Glucose Pyruvate Lactic acid Kreb's Cycle Aerobic Respiration Anaerobic respiration Occurs in the