Biology Unit 2 Test '17

33. the park of the enzyme into which the substrate fits is called the a. substrate location b. active site. c. solute d. feedback site e. inhibitor

b

34. which of the following is the correct sequence of events in cellular respiration? a. Krebs cycle-glycolysis-ETC-preparatory reaction b. glycolysis-preparatory reaction-citric acid cycle-ETC c. glycolysis-Krebs cycle-ETC d. glycolysis-ETC-preparatory reaction e. Krebs cycle-ETC-glycolysis-preparatory reaction

b

37. the O2 given off during photosynthesis is derived from which compound? a. CO2 b. H2O c. CO2 and H2O d. NADP+ e. RuBP

b

3. where in the cell does glycolysis occur? a. cytoplasm b. mitocondria c. cristae of mitochondrion d. matrix of mitochondrion

a

16. a family took their newborn to the doctor. they were worried something was wrong because she seemed to be in constant pain. the baby had large amounts of lactic acid accumulating in his muscles cells. Doctors figured out that the child had a rare disease in which mitochondria was missing from skeletal muscle cells. which of the following statements explains what they found? a. the cells had been going through fermentation to produce energy b. the muscles required small amounts of sugar to function c. the muscle cells cannot split glucose into pyretic acid d. the cells had died as a result of no mitochondria e. the muscles require extremely high levels of oxygen to function

a

19. the final acceptor for hydrogen ions is a. oxygen b. pyruvate c. carbon dioxide d. glucose e. CoA

a

21. sucrose, cellulose, amino acids, and starch are all made from what starter molecule in plants? a. G3P b. glucose c. RuBP carboxylase d. fructose e. ATP

a

36. simple diffusion across a plasma membrane is called passive transport because it a. does not require energy from the cell b. required energy from the cell c. move molecules form low to high concentration d. does not require control by the nucleus e. requires transport proteins

a

13. identify which of the following statements is NOT true a. ATP contains the energy form used for cellular work b. ATP is comprised of a sugar, base, and two phosphate groups c. ATP is formed when energy is released during cell respiration d. when ATP because ADP+P, the amount of energy released is enough for a biological purpose e. ADP is low in potential energy

b

14. as a result of glycolysis there is a NET gain of _______ ATPs a. 4 b. 2 c. 12 d. 0 e. 36

b

17. ATP and NADPH are both used during the Calvin cycle. What is the function of each? a. ATP supplies energy and NADPH fixes CO2 so it can enter the cycle b. ATP supplies energy and NADPH supplies electrons for reducing power c. NADPH supplies energy and ATP supplies electrons for reducing power d. ATP and NADPH are joined into the starter molecule, RuBP, to form glucose e. Both ATP and NADPH supply energy to the calvin cycle

b

22. molecules move from greater to lesser concentration through a transport protein in a. active transport b. facilitated diffusion c. pinocytosis d. phagocytosis e. simple diffusion

b

25. when you exhale what two stages of cellular respiration produce the carbon dioxide when you are breathing out? a. glycolysis and citric acid cycle b. preparatory reaction and citric acid cycle c. preparatory reaction and electron d. citric acid cycle and electron transport chain e. glycolysis and preparatory reaction

b

31. the figure below reflects how these two cells would respond in a _____ environment a. diffuse b. hypertonic c. ionic d. hypotonic e. isotonic

b

38. why is it necessary for ATP to be used in the energy-investment phase of glycolysis? a. the energy released when ATP becomes ADP is harnessed and used to pump hydrogen ions across the mitochondrial membrane b. adding the phosphate to the glucose molecule allows the later reactions that take place in the energy payoff phase to occur c. adding the phosphate to the glucose molecule breaks it into pyruvate d. when ATP is broken into adenosine, triglycerides, and phosphate, it supplies energy to produce more ATP later in oxidative phosphorylation e. there is no purpose to adding the phosphate to the glucose; it just happens that way

b

4. which of the following is an incorrect match of process to location? a. preparatory reaction-matrix of mitochondria b. preparatory reaction-cristae of mitochondria c. glycolysis-cytoplasm d. citric acid cycle-matrix of mitochondria e. ATP production in the electron transport chain-cristae of mitochondria

b

40. Susan suffered from a heart attack. When the doctors tested the heart muscle they found that she had an increased ration of lactic acid to pyretic acid in her heart. what does this say about the availability of oxygen in her heart muscle cells? a. the lactic acid built up as a result of cellular respiration occurring at too fast of a rate b. the heart cells had not received adequate oxygen supply c. the heart cells had a build up of carbon dioxide, poisoning her cells d. the heart cells must have received too much oxygen e. the heart cells had too much carbon dioxide build up

b

7. carotenoids are found in high concentrations in yellow and orange leaves or vegetables. this color is seen because the carotenoid pigments a. absorb or transmit yellow and orange wavelengths of light b. reflect and transmit yellow and orange wavelengths of light c. absorb or reflect yellow and orange wavelengths of light d. absorb all wavelengths of light and then transmit yellow and orange wavelengths. e. absorb yellow and orange wavelengths of light

b

8. in cellular respiration, most ATP produced directly as a result of a. fermentation b. the electron transport chain c. the preparatory stage d. the Calvin cycle e. the citric acid cycle

b

12. if 3 molecules of glucose went through glycolysis and into the citric acid cycle, how many times would the preparatory reaction occur? a. 1 b. 4 c. 6 d. 12 e. 2

c

15. why do plants contain other pigments besides chlorophyll? a. when chlorophyll breaks down, the additional pigments can absorb the same wavelengths of light b. when the additional pigments break down, the chlorophyll can absorb other wavelengths of light c. the additional pigments are able to absorb other light wavelengths that chlorophyll cannot d. the additional pigments can only absorb violet or ultraviolet light e. chlorophyll is unable to absorb visible light

c

2. when a potted house plant is wilting, the addition of water quickly changes the look of the plant. This can be accounted for by which of the following statements: a. the water creates an isotonic environment that allows for the cell to neither gain nor lose water b. the water creates a hypertonic environment causing the cells to gain water c. the water creates a hypotonic environment causing the cells to gain water d. the water creates a hypertonic environment causing the cells to lose water e. the water creates a hypotonic environment causing cells to lose water

c

20. which of the following organisms can perform photosynthesis a. fungi b. vertebrates c. algae d. invertebrates e. animals

c

30. in photosynthesis, the light reactions ____ while the calvin cycle _______. a. can only function if the stomata are open; can only occur if the stomate are closed b. use products manufactured in the dark reactions; creates products used in the dark reactions. c. capture solar energy; converts the captured energy to chemical potential energy d. require the presence of ATP; makes ATP e. can occur only in the light; can occur only in the dark

c

39. which of the following enables a cell to pick up and concentrate a specific type of molecule a. passive transport b. exocytosis c. receptor-mediated endocytosis d. facilitated diffusion e. osmosis

c

1. when a cell is in a solution where the concentration of solute is the same in the cell as in the solution, the solution is called? a. saturated b. hypertonic c. hypotonic d. isotonic e. osmotonic

d

11. cellular respiration can be described as the conversion of energy a. of sunlight to energy stored in inorganic compounds b. stored in leaves to energy in food c. stored in ATP to energy used to do work d. stored in food to energy stored in ATP e. stored in ATP to energy stored in food

d

23. energy to drive the formation of ATP in photosynthesis is derived from a. G3P b. NADPH c. CO2 d. H+ gradient e. NADP+

d

26. which is an example of potential rather than kinetic energy? a. a pile of leaves that have been burnt b. a candle giving off light c. a firefly using light flashes to attract a mate d. an apple made up of energy-rich macromolecules e. a skier at the bottom of a hill

d

28. a product of glycolysis is a. acetyl CoA b. ethyl alcohol c. oxygen d. pyruvate e. lactic acid

d

32. the three stages of the Calvin cycle reactions are a. NADPH reduction, Co2 fixation, and NADP+ regeneration b. CO2 fixation, CO2 reduction, and NADP+ regeneration c. CO2 reduction, NADPH reduction and CO2 regeneration d. CO2 fixation, Co2 reduction, and RuBP regeneration e. NADPH reduction, CO2 fixation and RuBP regeneration

d

5. yeast is used to make bread rise by producing _____ during fermentation a. oxygen gas b. oxygen c. glucose d. CO2 gas e. heat

d

6. a patient who is admitted to the hospital shares that she has been making a series of "water pills'" to help her lose weight. Her skin and mucous membranes are dry, and she is complaining of a headache. The physician on call asks for an IV treatment to be promptly administered. Based on the information given, what would likely be the top of IV solution given to this patient? a. bypertonci b. isotonic. c. osmotic d. hypotonic. e. saturated

d

9. which of the following is a by product of photosynthesis that is used during cellular respiration? a. NADH b. FADH2 c. ATP d. oxygen e. carbon dioxide

d

10. when a car burns gasoline, much of the energy is in the form of heat as the car is driven. which of the following best describes this in relation to the first law of thermodynamics? a. all energy comes from the sun b. energy is conserved c. energy is always used up in reactions d. energy is often destroyed e. energy can be changed from one form to another

e

18. which of the following is an example of osmosis? a. sodium is pumped across a cell to increase its concentration on one side of the cell membrane b. a bacterium in the blood stream is engulfed by a white blood cell c. glucose is transported from our blood stream across cell membranes and not the cytoplasm d. a broken bottle of perfume is able to be smelled throughout the department store e. cells of our kidneys reabsorb water to prevent it from all leaving through our urine

e

24. ATP releases energy when a. deoxyribose is added b. a ribose is added c. adenine is removed d. adenine is removed e. a phosphate is removed

e

27. a white blood cell surrounds and engulfs a worn-out red blood cell, forming a vesicle around the red blood cell.This process is called a. active transport b. facilitated diffusion c. exocytosis d. pinocytosis e. phagocytosis

e

29. In a redox reaction, reduction means _______, and oxidation means _____. a. loss of electrons; gain of electrons b. gain of protons; loss of protons c. gain of water; loss of water d. loss of water; gain of water e. gain of electrons; loss of electrons

e

35. the products of fermentation depend on the type of organism carrying out the process. Yeasts are used to produce a. wine with alcohol fermentation and beer and bread with lattice acid fermentation b. wine, beer, and bread with lactic acid fermentation c. only wine and beer with lactic acid fermentation d. wine and beer with alcohol fermentation and bread with lactic acid fermentation e. wine, beer, and bread with alcohol fermentation

e