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Test Description: Biology Unit 5 Test
Instructions: Answer all questions to get your test result.
1) Phospholipids, which make up the structure of the cell (plasma) membrane are examples of which organic compound?
A
Nucleic acids
B
Lipids
C
Proteins
D
Carbohydrates
2) Monosaccharides are monomers of which organic compound?
A
Carbohydrates
B
Nucleic acids
C
Proteins
D
Lipids
3) Which of the following organic compounds provides quick energy?
A
Proteins
B
Nucleic acids
C
Carbohydrates
D
Lipids
4) A single nucleotide is composed of which of the following substances?
A
A phosphate, a sugar, a nucleic acid:
B
A phosphate, a sugar, ribosome
C
A phosphate, a sugar, a lipid
D
A phosphate, a sugar, a nitrogen base
5) Which organic molecule carries or stores genetic information?
A
Carbohydrates
B
Proteins
C
Nucleic acids
D
Lipids
6) Proteins are made of long chains of __________________________
A
Fatty acids
B
Amino acids
C
Monosaccharides
D
Nucleotides
7) The distortion (change in shape) of enzyme molecules which occurs at high temperatures is known as?
A
Denaturation
B
Replication
C
Transcription
D
Homeostasis
8) A glycerol backbone and fatty acid chains are characteristics of which organic molecule?
A
Lipids
B
Nucleic acids
C
Carbohydrates
D
Proteins
9) Unless they are denatured by excessive heat or changes pH, enzymes are______
A
Damaged
B
New products
C
Unchanged and reusable
D
Buffers
10) Bears are able to hibernate all winter due to the fact that during the warm, summer months they store large amounts of _______________ which provides ________________ and _______________________.
A
Proteins, quick energy and insulation
B
Lipids (body fat), quick energy and insulation
C
Carbohydrates, quick energy and insulation
D
Lipids (body fat), long term energy and insulation
11) The monomers of carbohydrates are:
A
Amino acids
B
Monosaccharides
C
Nucleotides
D
Fatty acids
12) The monomers of nucleic acids are:
A
Nucleotides
B
Monosaccharides are simple sugars that make up the structure of more complex sugars
C
Amino acids
D
Monosaccharides
13) The monomers of proteins are:
A
Nucleotides
B
Amino acids
C
Fatty acids
D
Monosaccharides
14) Enzymes are used in the body to _______ chemical reactions by lowering the energy needed to start them.
A
slow down
B
stop
C
speed up
D
change
15) The structure of which organic molecule is characterized by a glycerol backbone and fatty acid tails?
A
Nucleic acids
B
Carbohydrates
C
Lipids
D
Proteins
16) The primary function of hemoglobin is to transport oxygen throughout the entire body via the red blood cells. Hemoglobin is composed of amino acids. Hemoglobin is classified as a(n):
A
Carbohydrate
B
Nucleic acid
C
Lipids
D
Protein
17) What are the 3 components of nucleotides?
A
Phosphate, sugar, proteins
B
Phosphate, sugar, nitrogen base
C
DNA, phosphate, ribosomes
D
Phosphate, sugar, ribosomes
18) Insulin is a hormone that regulates blood glucose levels. Insulin is composed of chains of amino acids held together by peptide bonds--therefore, insulin should be identified as a(n):________
A
Lipid
B
Carbohydrate
C
Protein
D
Nucleic acid
19) Select the answer choice that correctly pairs the organic compound with its function.
A
Nucleic acids - Stores genetic information and controls the synthesis of proteins.
B
Lipids - Provides quick energy
C
Proteins- builds the structure of cellular membranes
D
Carbohydrates - Long term energy storage.
20) Select the answer choice that correctly pairs the organic compound with its function.
A
Proteins - builds the structure of cellular membranes
B
Lipids - builds up muscles, skin, hair and nails.
C
Carbohydrates - quick energy.
D
Nucleic acids - provides long term energy
*select an answer for all questions
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