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Biology Chapter 2 Test

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1.
1 point
The monomers of a carbohydrate are
2.
1 point
Which of the following is not a biological macromolecule
3.
1 point
Proteins are biological catalyst that speed up chemical reactions.
4.
1 point
What is the main difference between an endothermic reaction and an exothermic reaction?
5.
1 point
The polysaccharide that makes plant cells and plant tissue rigid is
6.
1 point
In the phospholipid bilayer of the cell membrane, the tails point inward and form a region that exclude water. This region is
7.
1 point
An enzyme is a
8.
1 point
The cell wall of a plant is made out of
9.
1 point
A macromolecule is composed of small units called
10.
1 point
Acids have a pH less than 7 and has a low hydrogen ion concentration.
11.
1 point
Which of the following includes all others
12.
1 point
Which category of organic compound is the major component of cell membranes?
13.
1 point
The joining of an amino acids to form a protein occurs because of
14.
1 point
Phospholipids have a glycerol attached to fatty acids tails.
15.
1 point
Organic compounds that are composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio are called
16.
1 point
Lipids include fats, oils, and sugars.
17.
1 point
DNA and RNA are example of
18.
1 point
The push or energy needed to start a chemical reaction is the
19.
1 point
DNA and RNA are made out of nucleotides.
20.
1 point
An enzyme speeds up the reaction rate and increases the activation energy.
21.
1 point
The activities of enzymes depend on
22.
1 point
Nucleotides are composed of:
A - Amino Acid
B - Nitrogen-containing base
C - Fatty aid
D - 5-carbon sugar
E - Phosphate molecule
23.
1 point
Which is the strongest acid?
24.
1 point
A solution is a lower concentration of hydrogen ions
25.
1 point
Unlike saturated fats, unsaturated fats are
26.
1 point
Another name for a biological catalyst could be a(n)
27.
1 point
Proteins are made of the monomers fatty acids.
28.
1 point
The main element of biological macromolecules is
29.
1 point
The bond between a hydrogen of one water molecule to the oxygen of another water molecule is called
30.
1 point
Carbohydrates are the most common and are use first by the body for energy.
31.
1 point
A process that changes some chemical substances into other is a
32.
1 point
The oxygen in a water molecule is
33.
1 point
A(n) ____________________ is a basic unit of a carbohydrate.
34.
1 point
Biological macromolecules are found in all living things.
35.
1 point
Metabolism is the sum of all chemical reactions in the body which includes the build up and break down of materials.
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