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Microbiology Unit 1 Test 2

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1.
1 point
What factors affect enzyme activity?
2.
1 point
ATP synthase is a simple channel.
3.
1 point
What pH levels will denature an enzyme?
4.
1 point
This is related to the concentration of solutes across a semipermeable membrane.
5.
1 point
Which reaction is used to build most biological molecules?
6.
1 point
What is it called when enzyme activity is stopped by allowing a non-substrate molecule to occupy the enzyme active site, keeping the native substrate molecule out?
7.
1 point
What is it called when enzyme activity is stopped by changing the shape of the enzyme's active site so it can no longer bind to its native substrate?
8.
1 point
What temperatures will denature an enzyme?
9.
1 point
All enzymes are the same.
10.
1 point
What is it called when an end product molecule of a biopathway acts as an inhibitor for one of the early enzymes in a biopathway?
11.
1 point
What is the name of the molecules that fit into the active site on the enzyme?
12.
1 point
In which of the following is oxygen the final electron acceptor and that produces the greatest amount of ATP?
13.
1 point
A reaction required to build molecules is called _____?
14.
1 point
When a specific arrangement of electron carrier molecules embedded in the plasma membrane that pass electrons along in a step-wise fashion from one member of the chain to the next.
15.
1 point
Match the molecules with the structure: Protein & RNA
16.
1 point
What speeds up a reaction?
17.
1 point
What is respiration?
18.
1 point
The cytoplasm contains:
19.
1 point
If there is a high concentration of protons outside a cell, the protons will try to diffuse back across the membrane into the cell.
20.
1 point
Which of the following is a type of inhibition?
21.
1 point
Metabolic reactions either require or generate what?
22.
1 point
When oxygen is replaced with another electronegative molecule as the final electron acceptor and produces a good amount of ATP but not the greatest.
23.
1 point
Can glycolysis take place without oxygen?
24.
1 point
The first step in glycolysis is when glucose passes through the plasma membrane.
25.
1 point
Having a higher concentration of solutes compared to the other side of the semipermeable membrane is referred to as _____?
26.
1 point
What are simply materials that are pushed together for storage?
27.
1 point
Having the same concentration of solutes on both sides of a semipermeable membrane and will not have a net flow of water into or out of the cell is referred to as _____?
28.
1 point
Can protons directly diffuse through the plasma membrane?
29.
1 point
Each active site is unique based on what?
30.
1 point
Anabolic reactions ____ energy while catabolic reactions ____ energy.
31.
1 point
What type of metabolism uses hydrolysis?
32.
1 point
What is the first stage of respiration where glucose is oxidized to pyretic acid and electrons are transferred to carrier molecules; 2 molecules of ATP are made.
33.
1 point
A substrate gets into an active site because it happens to bump into the enzyme and fall into the correct active site.
34.
1 point
Which of the following gives off energy as the reaction proceeds?
35.
1 point
This happens when oxygen or other inorganic final electron acceptors are not available and produces only very limited amounts of ATP.
36.
1 point
Having a lower concentration of solutes compared to the other side of the semipermeable membrane is referred to as _____?
37.
1 point
About how many ATP are made during aerobic respiration per each glucose?
38.
1 point
What makes enzymes specific?
39.
1 point
What are the 3 major catabolic pathways that microbes use to generate energy?
40.
1 point
Which of the following molecules do microbes metabolize to generate energy?
41.
1 point
The general area where the bacterial chromosome is located is the ______?
42.
1 point
Protons diffuse through a membrane channel known as ______?
43.
1 point
If an enzyme is saturated, it cannot be more active.
44.
1 point
What is needed for active transport?
45.
1 point
An endergonic reaction requires energy to proceed.
46.
1 point
What are the 3 major steps in respiration?
47.
1 point
The breaking of a molecule by inserting a molecule of water is called a dehydration reaction.
48.
1 point
What molecule stops enzyme activity?
49.
1 point
The net movement of water across a semipermeable membrane is referred to as ______?
50.
1 point
When pyruvate is converted into acetyl-CoA and is completely broken down into CO2 as electrons are lost to the electron carriers; 2 more ATP molecules are made.
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