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Metabolism Test
Test Description: Test 3 - Metabolism and Nutrition
Instructions: Answer all questions to get your test result.
1) How many amino acids must you get from your diet?
A
8
B
12
C
16
D
All 20
2) Enzymes function in a chemical reaction to:
A
Lower the amount of activation energy a reaction needs to get started
B
Prevent reactions from occurring
C
Neutralize solutions
D
Act as substrate molecules
3) In the digestion of fats lab, what substance acted as a coenzyme?
A
Bile
B
Pancreatic juice
C
Milk
D
Phenol red
4) The molecule that an enzyme reacts with is called a:
A
Coenzyme
B
Substrate
C
Metabolic pathway
D
Cofactor
5) Which of the following is not part of adenosine diphosphate?
A
Adenine
B
Two phosphate groups
C
Ribose
D
Glucose
6) Energy for the cell's use is released when ATP gives up a phosphate forming:
A
ADP and P
B
Pyruvic acid
C
AMP and P
D
Glucose
7) Aerobic respiration takes place in the....
A
Mitochondria
B
Chloroplasts
C
Cytoplasm
D
Nucleus
8) Cellular respiration...
A
Occurs twelve hours a day
B
Produces glucose in plants
C
Produces less energy than it uses
D
Forms ATP from ADP
9) Which of the following reactions below represents a catabolic process?
A
Hydrolysis of starch to glucose
B
Formation of a protein from chains of amino acids
C
Enzyme catalyzed reaction from glucose and fructose to sucrose
D
Formation of a lipid from glycerol and fatty acids
10) Which of the following statements is true of enzymes?
A
Enzymatic reactions speed up when enzymes are heated to boiling
B
The higher the concentration of an enzyme, the higher the enzyme activity
C
Enzymatic reactions work best at 0 degrees.
D
The lower the concentration of an enzyme, the higher the enzyme activity
11) Which of the following is an anabolic process?
A
Hydrolysis
B
Decomposition
C
Anaerobic respiration
D
Dehydration synthesis
12) In the digeestion of fats lab, what effect did 100 degree Celcius have on enzyme activity?
A
It denatured the enzyme, therefore the enzyme was inactive
B
It increased the enzyme activity
C
It slowed down the enzyme activity, but it could be reversed when lowered to 37 degrees Celcius
D
No effect
13) The American Heart Association recommends that dietary fat should constitute no more than _____ % of daily caloric intake
A
30
B
10
C
70
D
50
14) The estimated daily amount of carbohydrate needed to avoid utilization of fats and proteins for energy sources is....
A
125-175 grams
B
30-50 grams
C
300-325 grams
D
50-275 grams
15) Which of the following series of steps describes cellular respiration?
A
Glycolysis, citric acid cycle, electron transport chain
B
Electron transport chain, glycolysis, citric acid cycle
C
Calvin cycle, electron transport chain, Kreb's cycle
D
Electron transport chain, Kreb's cycle, Calvin cycle
16) Which term describes the synthesis of cellular protein?
A
Metabolism
B
Hydrolysis
C
Catabolism
D
Anabolism
17) When our cells go through anaerobic respiration, what is the byproduct?
A
36 ATP
B
Pyruvic acid
C
Carbon dioxide and ethanol
D
Lactic acid
18) Cells store energy when:
A
They break down sucrose to glucose and fructose
B
The third phosphate group breaks off from the ATP molecule
C
A third phosphate group is bonded to an ADP molecule
D
Ions are released into the bloodstream
19) The sequence of enzyme controlled reactions that lead to the build up or breakdown of materials is called....
A
Biochemical pathway
B
Enzyme transport chain
C
Metabolic pathway
D
Anabolic/Catabolic series
20) The process by which living cells break down and release energy is:
A
Photosynthesis
B
Facilitated diffusion
C
Mitosis
D
Cellular respiration
*select an answer for all questions
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