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Biology Exam Quiz with Answers

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1.| Fermentation – B|
A)| takes place in the mitochondrion.|
B)| takes place in all animal cells.|
C)| does not require O2.|
D)| requires lactic acid.|
E)| prevents glycolysis.|

2.| In the cell, the site of oxygen utilization is the – D| A)| nucleus.|
B)| chloroplast.|
C)| endoplasmic reticulum.|
D)| mitochondrion.|
E)| cytosol.|

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3.| Animals inhale air containing oxygen and exhale air with less oxygen and more carbon dioxide. After inhalation, the oxygen missing from the air will mostly be found in – A| A)| the carbon dioxide that is exhaled.


B)| water.|
C)| organic molecules.|
D)| ethanol.|
E)| lactate.|

4.| The first phase of photosynthesis, a series of reactions that requires the absorption of photons to form ATP and NADPH, is referred to as the __D_____ phase.| A)| Reduction|
B)| dark reactions|
C)| carbon fixation|
D)| light reactions (or photophosphorylation)|
E)| None of the above|

5.| Plants are green because – A|
A)| chlorophylls absorb blue and orange-red wavelengths of light and
reflect green light.| B)| chloroplasts transmit green light.

C)| energized chlorophyll a emits green light.|
D)| plants do not possess green pigment.|
E)| chlorophylls absorb green light.|

6.| The main function of photosynthesis is the – C|
A)| consumption of CO2.|
B)| production of ATP.|
C)| conversion of light energy to chemical energy.|
D)| production of starch.|
E)| production of O2.|

7.| Most of the ATP made during the complete oxidation of glucose to CO2 and water is – B| A)| made by the mitochondrial ATP synthase.|
B)| from substrate-level phosphorylation.|
C)| synthesized by the sodium–potassium ATPase.|
D)| synthesized in the cytosol.|
E)| made directly by the citric acid cycle.|

8.| Oxidation and reduction – E|
A)| entail the gain or loss of proteins.|
B)| are defined as the loss of electrons.|
C)| are both endergonic reactions.|
D)| always occur together.|
E)| proceed only under aerobic conditions.|

9.| In human muscle cells, the fermentation process produces -A| A)| lactic acid.|
B)| 12 moles of ATP.|
C)| pyruvic acid.|
D)| an excessive amount of energy.|
E)| None of the above|

10.| The O2 gas produced during photosynthesis is derived from – A| A)| CO2.|
B)| glucose.|
C)| water.|
D)| CO.|
E)| bicarbonate ions.|

11.| Which of the following occurs during the Calvin cycle reactions of photosynthesis? -E| A)| Water is converted into hydrogen and water.|
B)| CO2 is converted into sugars.|
C)| Chlorophyll acts as an enzyme.|
D)| Nothing occurs; the plant rests in the dark.|
E)| None of the above|

12.| The citric acid cycle begins with- C|
A)| glucose.|
B)| pyruvate.|
C)| acetyl CoA.|
D)| NADH + H+.|
E)| ATP synthase.|

13.| Animals breathe in air containing oxygen and breathe out air with less oxygen and more carbon dioxide. The carbon dioxide comes from -A| A)| hydrocarbons and the air.|
B)| the citric acid cycle.|
C)| glycolysis.|
D)| waste products.|
E)| All of the above|

14.| In C4 plants, CO2 is first fixed into a compound called C| A)| pyruvate.|
B)| glucose.|
C)| oxaloacetate.|
D)| ribulose bisphosphate.|
E)| 3-phosphoglycerate.|

15.| Compared with fermentation, the aerobic pathways of glucose metabolism
produce A| A)| more ATP.|
B)| pyruvate.|
C)| fewer protons for pumping in the mitochondria.|
D)| less CO2.|
E)| more oxidized coenzymes.|

16.| Cyanide inhibits the enzyme in the mitochondrial electron transport chain that reduces O2 to water. Suppose that you add cyanide to a suspension of muscle cells from a rat. Which statement given below is the most accurate with respect to the effects of cyanide on glucose catabolism? D| A)| The citric acid cycle and glycolysis would be inhibited.| B)| The citric acid cycle would be inhibited, but glycolysis would not. Ethanol accumulates.| C)| The citric acid cycle and glycolysis would be stimulated.| D)| The citric acid cycle would be inhibited, but glycolysis would not. Lactic acid accumulates.| E)| The citric acid cycle would not be inhibited, but glycolysis would.|

17.| In cacti, an example of CAM plants, CO2 is stored for use in the Calvin cycle – B| A)| in the stems, roots, and leaves.|
B)| during the evening.|
C)| in glucose molecules.|
D)| in the stroma.|
E)| Both a and d|

18.| Photosynthesis in green plants occurs only during the day. Respiration in plants occurs – D | A)| only at night.|
B)| only when there is enough ATP.|
C)| only during the day.|
D)| all the time.|
E)| in the chloroplast after photosynthesis.|

19.| The end result of glycolysis is the – C|
A)| creation of 38 molecules of ATP.|
B)| reduction of 8 molecules of NAD.|
C)| formation of 2 molecules of pyruvate.|
D)| conversion of 1 molecule of glucose to lactic acid.|
E)| None of the above|

20.| The citric acid cycle – B|
A)| has no connection with the respiratory chain.|
B)| is the same thing as fermentation.|
C)| reduces two NAD+ for every glucose processed.|
D)| produces no ATP.|
E)| takes place in the mitochondrion.|

Cite this Biology Exam Quiz with Answers

Biology Exam Quiz with Answers. (2016, Aug 27). Retrieved from https://graduateway.com/biology-quiz/

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