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True/False Quiz
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Please answer all questions

1
The nucleus contains the genes necessary for most of the cell functions.
A)True
B)False
2
Any change in a DNA sequence is called a mutation and may happen for a number of reasons.
A)True
B)False
3
A mutation always has a damaging effect on cells.
A)True
B)False
4
PKU is a disease, which results from the excessive breakdown of phenylalanine caused by a genetic defect.
A)True
B)False
5
When two monosaccharides are joined together, usually a molecule of water is also produced.
A)True
B)False
6
The removal of water during a synthesis is referred to as hydration.
A)True
B)False
7
When glycerol and fatty acids combine to form a fat, water is also produced.
A)True
B)False
8
Most enzymes are derived from some type of protein.
A)True
B)False
9
Enzymes are catalysts that alter chemical reaction rates by chemically combining with the substrate.
A)True
B)False
10
During the formation of an enzyme-substrate complex, the enzyme combines with what are termed the specific active sites on the substrate.
A)True
B)False
11
Humans normally synthesize the proteins and vitamins that are the essential components of enzymes.
A)True
B)False
12
All biochemical reactions must have some source of energy.
A)True
B)False
13
Most of the energy in human cells is derived from reactions that require oxygen.
A)True
B)False
14
Oxygen will increase the rate of glycolysis.
A)True
B)False
15
Carbohydrates could travel down catabolic pathways and result in energy, or anabolic pathways and be stored as glycogen or lipid.
A)True
B)False
16
Some of the reactions within a mitochondrion do not require oxygen in order to proceed.
A)True
B)False
17
During glycolysis, glucose becomes bound to phosphate in a process called phosphorylation.
A)True
B)False
18
Glucose is converted to fructose in the beginning of glycolysis.
A)True
B)False
19
Cytochrome oxidase refers to a group of Kreb cycle enzymes.
A)True
B)False
20
It is possible that one could produce body fat from eating excess carbohydrates.
A)True
B)False
21
There are about 20 amino acids that are considered to be essential and must be obtained from the diet.
A)True
B)False
22
The direction that metabolic pathways take is directly controlled by the amount of substrate available.
A)True
B)False
23
The synthesis of mRNA from DNA is called transcription.
A)True
B)False
24
The synthesis of proteins occurs during the transcription stage of RNA.
A)True
B)False







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