BIOL 180 Quiz 3. Questions and Answers

Part 1 of 6 - Chapter 3 24.0 Points Question 1 of 33 3.0 Points Which structure carries out oxidation reactions that break down fatty acids and amino acids?  A. peroxisomes  B. chloroplasts  C. mitochondria  D. ribosomes Feedback: Great job. Question 2 of 33 3.0 Points Which structure is responsible making ATP, the cell’s main energy-carrying molecule?  A. mitochondria  B. ribosomes .  C. peroxisomes  D. chloroplasts Feedback: Great job. Question 3 of 33 3.0 Points Light and dissecting microscopes are binocular. What does this mean?  A. They have two separate lens systems, one for each eye  B. They have two eye pieces, and one lens system  C. They have one eye piece, and one lens system  D. They have one lens system, that is split for each eye Feedback: Great job. Question 4 of 33 3.0 Points What is it called when a substance moves from an area of high concentration to an area of low concentration until the concentration is equal across the space?  A. active transport  B. osmosis  C. diffusion  D. facilitated diffusion Feedback: Great job. Question 5 of 33 3.0 Points What are the network of protein fibers that help maintain the shape of the cell referred to as?  A. plasma membrane  B. cytoplasm  C. lysosome  D. vacuole  E. cytoskeleton Feedback: Great job. Question 6 of 33 3.0 Points If a substance must move up a concentration gradient, there is an input requirement of what from the cell?  A. Sugar  B. NaCl  C. ATP  D. H2O Feedback: Active transport requires an input of energy in order to occur. Review active transport in Chapter 3. Question 7 of 33 3.0 Points Which structure is responsible for protein synthesis, and is present in both eukaryotes and prokaryotes?  A. chloroplasts  B. mitochondria  C. peroxisomes  D. ribosomes Feedback: Great job. Question 8 of 33 3.0 Points Which is the only substance involved in osmosis?  A. alcohol  B. salt  C. water  D. sugar Feedback: Great job. Part 2 of 6 - Chapter 4 24.0 Points Question 9 of 33 3.0 Points Why can’t cells store extra free energy?  A. it would result in an increase of heat, which would denature enzymes  B. it would result in a lowering of heat, which would freeze the cells  C. it would result in a lack of space, which would keep out other molecules  D. they can store free energy, which is why we are able to survive Feedback: Great job. Question 10 of 33 3.0 Points What kind of energy does a slow moving wrecking ball contain?  A. light energy  B. heat energy  C. kinetic energy  D. potential energy  E. chemical energy Feedback: Great job. Question 11 of 33 3.0 Points What is the term for when an activator binds to an enzyme, which alters the active site so that the substrate is able to bind?  A. competitive inhibition  B. allosteric activation  C. allosteric inhibition  D. active site Feedback: Activation occurs when an enzyme is turned on, and can occur using an alternate site. Review energy and metabolism in Chapter 4. Question 12 of 33 3.0 Points Reactions that release free energy are called what?  A. endergonic  B. potential  C. exergonic  D. kinetic Feedback: Great job. Question 13 of 33 3.0 Points Rubisco is involved in photosynthesis, and helps to speed up the reaction from carbon dioxide to water. What is the generic term for rubisco?  A. exergonic  B. endergonic  C. substrate  D. enzyme Feedback: Certain proteins help to lower the activation energy of chemical reactions inside of a cell. Review energy and metabolism in Chapter 4. Question 14 of 33 3.0 Points What kind of metabolic pathway takes small molecules and builds them into larger ones, requiring energy?  A. metabolism  B. catabolic  C. anabolic  D. bioenergetics Feedback: Great job. Question 15 of 33 3.0 Points Reactions that absorb free energy are called what?  A. exergonic  B. kinetic  C. endergonic  D. potential Feedback: Great job. Question 16 of 33 3.0 Points What is the first step in the breakdown of glucose to extract energy for cell metabolism?  A. photosynthesis  B. gluconeogenesis  C. TCA cycle  D. glycolysis Feedback: Great job. Part 3 of 6 - Chapter 5 24.0 Points Question 17 of 33 3.0 Points What are the disc-shaped membranous structures inside of the chloroplast where the lightdependent reactions take place?  A. thylakoid  B. mesophyll  C. chloroplast  D. stroma Feedback: Great job! Question 18 of 33 3.0 Points During the light-dependent reactions of photosynthesis, what are the two energy-carrier molecules that absorb the energy from sunlight?  A. ADP and ATP  B. ATP and NADPH  C. ATP and water  D. NADPH and water  E. ADP and NADPH Feedback: Great work! Question 19 of 33 3.0 Points During the light-dependent reactions of photosynthesis, where does the oxygen come from?  A. the hydrolysis of glucose  B. the loss of pigment  C. the loss of sugar  D. the hydrolysis of water Feedback: Great job! Question 20 of 33 3.0 Points If we think of the electromagnetic spectrum, which type of wavelength has the most energy?  A. long, tight waves  B. short, stretched waves  C. long, stretched waves  D. short, tight waves Feedback: Great job! Question 21 of 33 3.0 Points What is the overall purpose of cellular respiration in photosynthetic organisms?  A. to breathe the oxygen from the air efficiently  B. to allow cells to fold on to one another  C. to release glucose into the environment  D. to harvest the energy they have stored in carbohydrates Feedback: Great job! Question 22 of 33 3.0 Points In which organelle in plants do photosystems reside?  A. thylakoids  B. ribosomes  C. mitochondria  D. nucleus Feedback: Great job! Question 23 of 33 3.0 Points There are three stages in the Calvin cycle; what are they in the proper order?  A. Reduction, Carbon Fixation, Loss of RuBP  B. Carbon Fixation, Reduction, Regeneration of RuBP  C. Reduction, Loss of chlorophyll, Carotenoids  D. Loss of chlorophyll, Regeneration of RuBP, Reduction Feedback: Great job! Question 24 of 33 3.0 Points In what organelle does all photosynthesis takes place in plants?  A. chloroplast  B. vaculoe  C. nucleus  D. mitochondrion  E. lysosome Feedback: Great job! Part 4 of 6 - Lecture Material 12.0 Points Question 25 of 33 3.0 Points What is the vacuole in plant cells?  A. space in the middle of plant cells that contains water and macromolecule storage  B. it plays a role in capturing the energy of the sun to create carbohydrates or sugar  C. it plays a role in the packaging and shipping of protein products  D. it is the site of RNA synthesis, and DNA storage  E. it is found in side the nucleus, and makes ribosomes