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Bio 1. Quiz on Ch 5,6,7,8, Name ____________________________ Remote ___ 1. Which of the following processes does a cell use to take up molecules against their concentration gradient? a. simple diffusion b. facilitated diffusion c. active transport d. endocytosis e. Both the c and d are correct. 2. Proteins which act as catalysts of chemical reactions [in cells] are called: a. enzymes. b. coenzymes. c. reaction cofactors. d. substrates. e. reactants 3. A final product of a metabolic pathway inhibits an early enzyme in the pathway. This is likely to be an example of: a. competitive inhibition. b. feedback inhibition. c. cooperativity. d. energy coupling. e. a second messenger. 4. Choose the substance that will diffuse most rapidly across the plasma membrane. a. amino acid b. sodium ion c. small polar molecule d. oxygen 5.Chlorophyll and carotenoids are found at the a. Thylakoid membrane (reaction center) b. matrix of the mitochondria c. center of the thylakoid d. center of the Electron Transport Chain e. none of the above. 6. In endergonic reactions, __________. a. the reactants have more potential energy than the products b. energy is released c. a net input of energy is not required d. all of the above e. none of the above 7. In most land plants, photosynthesis occurs in cells of the __________ of the leaves, because these cells contain the largest numbers of chloroplasts.a. epidermis b. stomata c. cuticle d. mesophyll e. vascular bundles 8. The light-independent reactions…: a. can only occur only in the dark b. can occur independently of light, as long as ATP and NADPH are available. c. depend only on water and carbon dioxide availability d. follow a day/night cycle, regardless of actual light e. none of the above 9. The term carbon fixation refers to __________. a. the loss of carbon during glucose synthesis b. the incorporation of atmospheric carbon dioxide into a larger organic molecule c. the synthesis of glyceraldehyde-3phosphate d. the regeneration of ribulose bisphosphate 10. In eukaryotic cells, glycolysis occurs in the __________, and cellular respiration occurs in the __________. a. mitochondria, cytoplasm b. cytoplasm, mitochondria c. cytoplasm, chloroplasts d. chloroplasts, mitochondria 11. In the absence of oxygen, pyruvate acts as an electron acceptor in a process called ___________________. a. hydrolysis b. fermentation c. oxidative phosphorylation d. glycolysis