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Biology Chapter 5
Test Description: More detailed review of chapter 5: Molecules of Life
Instructions: Answer all questions to get your test result.
1) An organic molecule is based on ____, while hydrocarbons are organisms that must also have _____
A
carbon, hydrogen
B
hydrogen, carbon
C
oxygen, nitrogen
D
nitrogen, oxygen
2) Which of the 4 main functional groups below is used for electron bonding?
A
hydroxyl group
B
carboxyl group
C
amino group
D
carbonyl group
3) A carbohydrate is not --
A
hydrophilic
B
have a base of CH2O
C
ring-shaped
D
inorganic
4) Which of the below is not a polysaccharide?
A
starch
B
glycogen
C
glucose
D
cellulose
5) A fat molecule is made of ___ and 3 ___ acids
A
glycerol, citric
B
glycogen, citric
C
glycogen, fatty
D
glycerol, fatty
6) A steroid molecule functions --
A
to store energy
B
to insulate
C
as chemical messengers
D
to cushion
7) Proteins are made of _____, which are made of ______
A
amino acids, polypeptides
B
polypeptides, amino acids
C
denaturation, amino acids
D
denaturation, polypeptides
8) Amino acids are not made of --
A
polypeptides
B
an amino group
C
a side group with unique chemical properties
D
a carboxyl group
9) _____ speed up chemical reactions by lowering activation energy, like their biological counterparts, _______
A
proteins, steroids
B
enzymes, catalysts
C
substrates, amino acids
D
catalysts, enzymes
10) Which helps build polymer chains?
A
Condensation reaction
B
Dehydration reaction
C
Hydrolysis reaction
D
Denaturation
*select an answer for all questions
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