CBIO 111-01 and 02 Spring 2018 Final 3 1. Anabolic pathways of metabolism are pa

Question

CBIO 111-01 and 02 Spring 2018 Final 3 1. Anabolic pathways of metabolism are pathways that: A. build complex molecules from simple ones. B. release stored chemical C. take place primarily in skeletal muscle. D. make large quantities of ATP. 2. Energy input in the form of ATP is needed in which of the following processes? A. catabolism B. anabolism C. hydrolysis 3. In classifying organisms according to their source of energy and carbon, how would you classify humans? C. as chemoautotrophs D. as chemoheterotrophs 4. are organisms that derive epergy from sunlight. A. Phototrophs B. Autotrophs C. Heterotrophs D. Chemotrophs 5. Which of the following organisms are considered heterotrophs? A. most bacteria D. hydrogen bacteria B. dogs E. most bacteria and dogs C. plants 6. The potential energy in a molecule of ATP that is harnessed to do the work of the cell is held in part in the A. carbon-carbon bonds of the sugar B. repulsion of the phosphate groups from each other C the carbon-nitrogen bonds of the base. D. the carbon-oxygen boads of the sugar 7. Some examples of work that a cell has to do: A. Synthesizing DNA, RNA, proteins c. Pumping substances across membranes B. Moving vesicles in a cel D. All of the above E. None of the above reactions and produced in- b. catabolic, anabolic 8. In general ATP is consumed in A. anabolic, catabolic 9. Imagine that a bowling ball is placed at various locations along a staircase. At which location does the ball possess the greatest amount of potential energy? B. at the bottom of the stairs A. at the top of the stairs C. in the middle of the staircase D. The ball will have the same amount of potential energy no matter where it is placed. 10. Which one of the following is the most common energy "currency" for a cell? 11. Entropy is often increased by 12. Reactions in which there is a negative change in free energy (-AG) are: B. DNA C. glucose Dprotein E. NADH A. ATP A. heat A. spontaneous and endergonic. ?.order.?. potential energy. D.kinetic energy. B. spontaneous and exergonic. C. nonspontaneous and endergonic. D. nonspontaneous and exergonic. 13. Which of the following reactions is most likely to be exergoaie? A. the synthesis of a phospholipid from glycerol and fatty acids B. the replication of DNA from free nucleotides C. the formation of cellulose from individual glucose molecules D. the digestion of protein from food into amino acids 14. Which of the following type(s) of inhibitor can bind to the active site of an enzyme? C. all types of inhibitors A. a competitive inhibitor 15. What are examples of potential energy? B. an allosteric inhibitor A Wind, water evaporation, gasoline. B. Wind, sunlight, beat C. candy bar water behind a dam, cloud D. Sunlight cloud, cooked potato 16. The approximate yield of ATP molecules from the full oxidation of a molecule of glucose is E. 64. C. 12. D. 32.

Explanation / Answer

1. A) Anabolism is defined as the set of metabolic pathways which leads to the construction of molecules from smaller units.

2.b) Anabolism takes place constantly, and use energy carried by ATP and other short-term energy storage molecules.

3.d) Humans are chemoheterotrophs as by heating food we break down organic chemicals from their cells to both obtain energy and building materials for our own bodies.

4.a) Phototrophs ( photo means lights ) are organisms that obtain energy from light. An example is all green plants and algae.

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