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Q 1/108
Score 0
How do enzymes lower activation energy in chemical reactions?
30
by binding the substrate in the transition state
by inhibiting the reaction altogether
by changing the pH of the reaction
by increasing the temperature of the reaction
Q 2/108
Score 0
What is the name of the site on an enzyme where the substrate binds?
30
passive site
binding site
active site
inactive site
108 questions
Q.
How do enzymes lower activation energy in chemical reactions?
1
30 sec
Q.
What is the name of the site on an enzyme where the substrate binds?
2
30 sec
Q.
Which of the following best describes how enzymes accelerate chemical reactions?
3
30 sec
Q.
What is the function of an enzyme inhibitor in a chemical reaction?
4
30 sec
Q.
How do enzymes lower the activation energy required for a chemical reaction?
5
30 sec
Q.
In enzyme induced fit, what is the term for the changes in the enzyme's shape to better fit the substrate?
6
30 sec
Q.
Which term best describes the way enzymes change their shape to better interact with specific substrates?
7
30 sec
Q.
How does the induced fit model explain the enzyme-substrate interaction?
8
30 sec
Q.
Why does temperature increase the rate of enzyme reaction?
9
30 sec
Q.
True or False: As you increase temperature, the kinetic energy of reactants increases, leading to more frequent and successful collisions in a reaction.
10
30 sec
Q.
True or False: Enzymes increase the activation energy needed for a reaction to occur.
11
30 sec
Q.
True or False: Increasing the concentration of reactants will always result in a faster reaction rate.
12
30 sec
Q.
What is the name of the temperature point at which the rate of reaction is at its peak performance?
13
30 sec
Q.
What prevents temperature from continuously increasing the rate of a reaction and instead having a point where temperature has a peak performance on the rate of reaction?
14
30 sec
Q.
What is the difference between a pH curve and temperature curve of an enzyme reaction?
15
30 sec
Q.
How does temperature affect enzyme activity?
16
30 sec
Q.
Why is pH regulation important for enzyme activity?
17
30 sec
Q.
How does pH impact enzyme-substrate interactions?
18
30 sec
Q.
What effect does extreme pH levels have on enzyme function?
19
30 sec
Q.
What is the equation for glycolysis?
20
30 sec
Q.
Which molecule is formed directly from the conversion of fructose bisphosphate during glycolysis?
21
30 sec
Q.
What is the final product of glycolysis from the conversion of glyceraldehyde 3 phosphate?
22
30 sec
Q.
What is the third stage in glycolysis after Glucose 6 phosphate?
23
30 sec
Q.
In glycolysis, what is the first stage after glucose?
24
30 sec
Q.
What is the second stage in glycolysis after Glucose?
25
30 sec
Q.
Which molecule is produced directly from the conversion of fructose bisphosphate in glycolysis?
26
30 sec
Q.
Which molecule is utilized in the conversion of fructose bisphosphate to glyceraldehyde 3 phosphate during glycolysis?
27
30 sec
Q.
In which stage does ATP play a role in the conversion of glucose to glyceraldehyde 3 phosphate?
28
30 sec
Q.
What is required to convert NAD+ to NADH?
29
30 sec
Q.
Which molecule is reduced to NADH during cellular respiration?
30
30 sec
Q.
What is the function of NADH in cellular respiration?
31
30 sec
Q.
In which process is NAD+ converted to NADH by accepting electrons?
32
30 sec
Q.
What is the primary function of NADH in cellular respiration?
33
30 sec
Q.
What kind of transport occurs with the movement of pyruvate into the mitochondria?
34
30 sec
Q.
Which enzyme is responsible for converting pyruvate into acetyl CoA before entering the citric acid cycle?
35
30 sec
Q.
What is the primary source of ATP production in the mitochondria?
36
30 sec
Q.
What is the equation for the conversion of pyruvate to acetyl CoA?
37
30 sec
Q.
Which enzyme is responsible for catalyzing the conversion of pyruvate to acetyl CoA?
38
30 sec
Q.
Which molecule is generated as a byproduct during the conversion of pyruvate to acetyl CoA?
39
30 sec
Q.
Which coenzyme is involved in the conversion of pyruvate to acetyl CoA?
40
30 sec
Q.
Which molecule is reduced to form NADH during the conversion of pyruvate to acetyl CoA in aerobic respiration?
41
30 sec
Q.
What is the fate of the remaining two carbons from pyruvate that are not converted to acetyl CoA in aerobic respiration?
42
30 sec
Q.
During which process is pyruvate converted to acetyl CoA?
43
30 sec
Q.
In which process does pyruvate fermentation occur?
44
30 sec
Q.
Which process involves the conversion of pyruvate to acetyl CoA in the presence of oxygen?
45
30 sec
Q.
Which of the following processes involves the conversion of oxaloacetate to citrate?
46
30 sec
Q.
How many carbon atoms are present in an oxaloacetate molecule?
47
30 sec
Q.
What is the primary function of oxaloacetate in cellular metabolism?
48
30 sec
Q.
What is the chemical formula for oxaloacetate?
49
30 sec
Q.
In which organelle does the conversion of oxaloacetate to citrate occur?
50
30 sec
Q.
What is the product when oxaloacetate combines with acetyl CoA in the citric acid cycle?
51
30 sec
Q.
Which molecule is considered the starting compound for the citric acid cycle?
52
30 sec
Q.
Which enzyme is responsible for combining oxaloacetate with acetyl CoA in the citric acid cycle?
53
30 sec
Q.
What is the purpose of oxaloacetate in the citric acid cycle?
54
30 sec
Q.
What is the role of the citric acid cycle in cellular respiration?
55
30 sec
Q.
Which molecule is produced in the highest quantity during the conversion of Acetyl CoA and oxaloacetate?
56
30 sec
Q.
How many molecules of NADH are produced from the conversion of Acetyl CoA and oxaloacetate?
57
30 sec
Q.
Which molecule is a high-energy phosphate carrier produced in the reaction Acetyl CoA + Oxaloacetate?
58
30 sec
Q.
What is the total number of carbon dioxide (CO2) molecules produced in the reaction Acetyl CoA + Oxaloacetate?
59
30 sec
Q.
What is the function of FADH2 in the process of converting Acetyl CoA and oxaloacetate to 3 NADH, 1 FADH2, 1 GTP, and 2 CO2?
60
30 sec
Q.
Which molecule is used as a starting substrate in the reaction that converts oxaloacetate to 3 NADH and 1 FADH2?
61
30 sec
Q.
What is the primary function of NADH in cellular respiration?
62
30 sec
Q.
Which of the following molecules is the electron carrier in the electron transport chain?
63
30 sec
Q.
Which enzyme is responsible for catalyzing the transfer of electrons from NADH to the electron transport chain in cellular respiration?
64
30 sec
Q.
Where does NADH dehydrogenase transport electrons to in the electron transport chain?
65
30 sec
Q.
What is the primary function of NADH dehydrogenase in cellular respiration?
66
30 sec
Q.
Is a proton the same thing as a hydrogen ion?
67
30 sec
Q.
What is the charge of a proton?
68
30 sec
Q.
What is the result of the NADH transfer of electron into the electron transport chain?
69
30 sec
Q.
What is the role of NADH in the electron transport chain?
70
30 sec
Q.
How many protons are pumped into the intermembrane space for each electron transfer from NADH in the electron transport chain?
71
30 sec
Q.
How is the proton gradient utilized in the electron transport chain?
72
30 sec
Q.
Which complex in the electron transport chain directly pumps protons into the intermembrane space?
73
30 sec
Q.
What is the role of cytochrome c in the electron transport chain?
74
30 sec
Q.
What is the role of the electron transport chain in cellular respiration?
75
30 sec
Q.
Which enzyme plays a key role in the electron transport chain by transferring electrons to cytochrome c?
76
30 sec
Q.
What is the function of cytochrome reductase in the electron transport chain?
77
30 sec
Q.
Which complex does cytochrome reductase belong to in the electron transport chain?
78
30 sec
Q.
NADH donates electrons to all of the cytochrome complexes except:
79
30 sec
Q.
Which molecule is the final electron acceptor in the electron transport chain?
80
30 sec
Q.
Which molecule carries high-energy electrons from glycolysis to the electron transport chain?
81
30 sec
Q.
Which of the following is an electron carrier in the electron transport chain?
82
30 sec
Q.
Which of the following is the electron donor for complex II?
83
30 sec
Q.
Which molecule is responsible for carrying electrons in complex III of the electron transport chain?
84
30 sec
Q.
Which molecule is responsible for carrying electrons from complex I to complex III in the electron transport chain?
85
30 sec
Q.
Which enzyme complex catalyzes the conversion of NADH to NAD+ in the electron transport chain?
86
30 sec
Q.
Complex I, III and IV receive electrons from the reduction of NADH. Which molecule is reduced to give electrons to complex II?
87
30 sec
Q.
Which complex in the electron transport chain is responsible for the final step of electron transfer to oxygen?
88
30 sec
Q.
What is the name of the transport mechanism by which the hydrogen ions (protons) are transported into the inner mitochondrial membrane?
89
30 sec
Q.
Which part of the mitochondria is responsible for creating the proton gradient required for chemiosmosis during ATP synthesis?
90
30 sec
Q.
Which part of the proton pump F0, F1, ATP complex rotates in response to the flow of protons?
91
30 sec
Q.
Which subunit of the proton pump F0, F1, ATP complex directly interacts with the rotor component in response to changes in proton gradient?
92
30 sec
Q.
What drives the rotation of the ATP synthase complex associated with the proton pump?
93
30 sec
Q.
What is the function of the F1 subunit in the proton pump complex?
94
30 sec
Q.
TRUE OR FALSE: The term chemiosmosis is used because hydrogen ions are moving from an area (intermembrane space) of high concentration to an area of lower concentration (mitochondrial membrane).
95
30 sec
Q.
TRUE OR FALSE: In cellular respiration, the majority of ATP is produced during the citric acid cycle.
96
30 sec
Q.
How many protons does it take to make 1 molecule of ATP?
97
30 sec
Q.
Each NADH donates enough electrons to a complex to produce how many ATP?
98
30 sec
Q.
Where is all of the ATP made during electron transport chain in a cell?
99
30 sec
Q.
Which part of the F0,F1 ATPase complex rotates during ATP synthesis?
100
30 sec
Q.
How many ATP molecules are produced from one glucose molecule through cellular respiration?
101
30 sec
Q.
What is the net gain of ATP molecules during glycolysis per molecule of glucose?
102
30 sec
Q.
Which stage of cellular respiration produces the most ATP molecules?
103
30 sec
Q.
How many ATP are produced from 1 FADH2?
104
30 sec
Q.
How many NADH are produced during glycolysis?
105
30 sec
Q.
How many NADH are produced during the citric acid cycle (Krebs cycle)?
106
30 sec
Q.
How many NADH molecules are produced from one molecule of glucose during the complete process of cellular respiration?
107
30 sec
Q.
How many NADH molecules are produced during the fermentation process in the absence of oxygen?
