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Q 1/95
Score 0
What is catabolism?
30
The synthesis of complex molecules from simpler ones to store energy
The breakdown of complex molecules into simpler ones to release energy
The movement of molecules across a cell membrane
The process of converting light energy into chemical energy
Q 2/95
Score 0
During catabolism, which macromolecules are broken down to release energy?
30
Vitamins and minerals
Carbohydrates, fats, and proteins
Water and electrolytes
Nucleic acids and amino acids
95 questions
Q.
What is catabolism?
1
30 sec
Q.
During catabolism, which macromolecules are broken down to release energy?
2
30 sec
Q.
Which metabolic pathway involves the breakdown of glucose to produce ATP during catabolism?
3
30 sec
Q.
What is the primary purpose of catabolism in living organisms?
4
30 sec
Q.
Which of the following is an example of catabolism?
5
30 sec
Q.
What is anabolism?
6
30 sec
Q.
What is the primary purpose of anabolism in living organisms?
7
30 sec
Q.
Which of the following is an example of an anabolic process in the human body?
8
30 sec
Q.
Which of the following processes is associated with anabolism?
9
30 sec
Q.
Which organelle plays a key role in anabolism by synthesizing proteins?
10
30 sec
Q.
Which pathway is primarily involved in anabolism to produce glucose from non-carbohydrate precursors?
11
30 sec
Q.
Which of the following organisms is capable of producing energy from sunlight through the process of photosynthesis?
12
30 sec
Q.
Which of the following is not a type of phototroph?
13
30 sec
Q.
Which of the following organisms is an example of a phototroph that can fix (use) nitrogen from the atmosphere?
14
30 sec
Q.
Which of the following organisms can produce their own food through photosynthesis?
15
30 sec
Q.
Which type of organisms rely on consuming other organisms for their food?
16
30 sec
Q.
Which of the following is a common energy source for chemotrophic bacteria in soil?
17
30 sec
Q.
Which of the following is an example of a chemoheterotroph?
18
30 sec
Q.
What is the primary source of energy for chemotrophs?
19
30 sec
Q.
Which of the following is a characteristic of chemotrophs?
20
30 sec
Q.
What is a chemotroph?
21
30 sec
Q.
How do chemotrophs differ from autotrophs in terms of energy acquisition?
22
30 sec
Q.
Evaluate the following statement: The term photoautotroph refers to the two means by which energy and carbon are obtained. Photo insinuates that the energy comes from photons (sunlight) and the 'auto' indicates that they make their own carbon. The name is a reflection of where the organism gets its energy and its carbon. This is the case for naming all living creatures.
23
30 sec
Q.
Which molecule is produced as a result of glycolysis?
24
30 sec
Q.
What is the net production of ATP molecules per glucose molecule during glycolysis?
25
30 sec
Q.
During glycolysis, which enzyme catalyzes the conversion of glucose to glucose-6-phosphate?
26
30 sec
Q.
Which molecule is the final electron acceptor in the electron transport chain during cellular respiration?
27
30 sec
Q.
Which molecule is formed from the condensation of two molecules of pyruvate during aerobic respiration?
28
30 sec
Q.
Which coenzyme is involved in the conversion of pyruvate to acetyl-CoA before entering the citric acid cycle?
29
30 sec
Q.
In which organelle does the majority of ATP production occur during cellular respiration?
30
30 sec
Q.
Which enzyme is responsible for converting pyruvate into acetyl-CoA in preparation for the Krebs cycle?
31
30 sec
Q.
Which molecule is produced as a byproduct of the Krebs cycle?
32
30 sec
Q.
Which coenzyme is essential for carrying electrons during the citric acid cycle (Krebs cycle)?
33
30 sec
Q.
Which molecule is formed from the condensation of acetyl-CoA and oxaloacetate to initiate the Krebs cycle?
34
30 sec
Q.
Which of the following is a characteristic of binary fission?
35
30 sec
Q.
During binary fission, what is the term used to describe the division of the cytoplasm and separation of the two daughter cells?
36
30 sec
Q.
Which of the following organisms reproduces through binary fission?
37
30 sec
Q.
What is the process by which a single cell divides into two identical cells called?
38
30 sec
Q.
Which of the following best describes binary fission?
39
30 sec
Q.
During binary fission, what is the role of the DNA in the parent cell?
40
30 sec
Q.
What is the term used to describe the initial stage of binary fission, where the parent cell grows in size and duplicates its DNA?
41
30 sec
Q.
In spontaneous reactions, the reactants generally have __________ energy than the products.
42
30 sec
Q.
Spontaneous reactions proceed ________ energy input from external sources.
43
30 sec
Q.
In spontaneous reactions, entropy (energy buried in the system) tends to __________.
44
30 sec
Q.
During a spontaneous reaction, the Gibbs free energy is typically ________.
45
30 sec
Q.
Spontaneous reactions proceed in the direction that leads to a __________ Gibbs free energy.
46
30 sec
Q.
What is the driving force behind spontaneous reactions?
47
30 sec
Q.
How does an increase in temperature affect the activation energy of a spontaneous reaction?
48
30 sec
Q.
What role do catalysts play in the activation energy of a spontaneous reaction?
49
30 sec
Q.
How does the presence of impurities affect the activation energy of a spontaneous reaction?
50
30 sec
Q.
How does an increase in the size of reactant particles affect the activation energy of a spontaneous reaction?
51
30 sec
Q.
How does the presence of a higher concentration of reactants affect the activation energy of a spontaneous reaction?
52
30 sec
Q.
What is the first law of thermodynamics also known as?
53
30 sec
Q.
What does the first law of thermodynamics state about the energy of a closed system?
54
30 sec
Q.
Which of the following is true regarding enzymes and energetics?
55
30 sec
Q.
What is the name given to the substance on which an enzyme acts?
56
30 sec
Q.
Which factor can significantly affect the activity of enzymes?
57
30 sec
Q.
What is a common way to denature enzymes?
58
30 sec
Q.
What is the term for the specific region on an enzyme where the substrate binds?
59
30 sec
Q.
What is the term used to describe molecules that inhibit enzyme activity by binding to the active site?
60
30 sec
Q.
What type of biomolecule do enzymes primarily belong to?
61
30 sec
Q.
How do enzymes interact with substrates in a chemical reaction?
62
30 sec
Q.
What is the role of cofactors in enzyme function?
63
30 sec
Q.
Watch the following video in order to answer the next questions: https://study.com/academy/lesson/what-is-an-allosteric-site-of-the-enzyme-definition-biology.html
64
30 sec
Q.
What is the function of an allosteric site on an enzyme?
65
30 sec
Q.
How does an allosteric inhibitor affect enzyme activity?
66
30 sec
Q.
What is the purpose of an allosteric activator on an enzyme?
67
30 sec
Q.
What is the primary mechanism by which allosteric sites regulate enzyme activity?
68
30 sec
Q.
In enzyme kinetics, what does Vmax represent?
69
30 sec
Q.
What does the Michaelis constant (Km) in enzyme kinetics represent?
70
30 sec
Q.
What is the relationship between substrate concentration and reaction rate in enzyme kinetics?
71
30 sec
Q.
What is the effect of temperature on enzyme activity?
72
30 sec
Q.
What does Km represent in enzyme kinetics?
73
30 sec
Q.
What is the term for the process by which an enzyme changes its shape to accommodate a substrate during a reaction?
74
30 sec
Q.
What is the term for the energy released or absorbed during a chemical reaction?
75
30 sec
Q.
What is the term used to describe the substrate concentration at which an enzyme reaches half of its maximum velocity in an enzymatic reaction?
76
30 sec
Q.
What is the maximum velocity that an enzyme can reach in a catalyzed reaction?
77
30 sec
Q.
What happens to the reaction rate when the substrate concentration exceeds the Km value in an enzymatic reaction?
78
30 sec
Q.
What is the allosteric effect on enzyme activity?
79
30 sec
Q.
What effect does a smaller Michaelis constant (Km) have on the enzyme-substrate interaction?
80
30 sec
Q.
How does a smaller Michaelis constant (Km) affect the rate of enzymatic reactions?
81
30 sec
Q.
How does a smaller Michaelis constant (Km) impact the enzyme-substrate binding process?
82
30 sec
Q.
How does a smaller Michaelis constant (Km) affect the Vmax of an enzymatic reaction?
83
30 sec
Q.
Is the allosteric site non-competitive or competitive?
84
30 sec
Q.
What type of inhibition occurs when a molecule binds to the active site of an enzyme, preventing the substrate from binding?
85
30 sec
Q.
Which statement best describes the binding of non-competitive inhibitors to enzymes?
86
30 sec
Q.
How do non-competitive inhibitors affect the enzyme's Vmax value?
87
30 sec
Q.
How do competitive inhibitors affect the enzyme's Vmax value?
88
30 sec
Q.
How do allosteric activators affect the enzyme's Vmax value?
89
30 sec
Q.
True or False: Inhibitors that bind to the allosteric site are more inhibiting than inhibitors that bind to the active site.
90
30 sec
Q.
Label 'A' in the following graph of enzymatic reaction speed:
91
30 sec
Q.
Label 'B' in the following graph of enzymatic reaction speed:
92
30 sec
Q.
Label 'C' in the following graph of enzymatic reaction speed:
93
30 sec
Q.
What happens to an enzyme's Vmax value in the presence of uncompetitive (non-competitive) inhibitors?
