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Ch. 3 The Molecules Of Life
Test Description: Part 4 of 4
Instructions: Answer all questions to get your test result.
1) Nucleic acids are polymers of ______ monomers.
A
fatty acid
B
monosaccharide
C
DNA
D
nucleiotide
2) The four DNA nucleotides (nitrogen bases) include ______.
A
thymine, guanine, adenine, and cytosine
B
thymine, guanine, adenine, and uracil
C
thymine, uracil, adenine, and cytosine
D
uracil, guanine, adenine, and cytosine
3) A specific stretch of DNA that programs the amino acid sequence of a polypeptide is a ______.
A
protein
B
nucleic acid
C
gene
D
enzyme
4) Which nitrogen bases pair up in DNA?
A
A-T, C-G
B
A-G, C-T
C
A-U, C-T
D
A-T, C-U
5) If one strand of a DNA double helix has the sequence AGTACTG, what will be the sequence of the other strand?
A
TCATGAC
B
GACGTCA
C
GTCATGA
D
AGTACTG
6) The shape of DNA is a(n) _____________.
A
octagon
B
double helix
C
single helix
D
triple ring
7) How does RNA differ from DNA?
A
In RNA G pairs with T; in DNA G pairs with C.
B
RNA contains uracil; DNA contains thymine.
C
RNA is double-stranded; DNA is single-stranded.
D
RNA is a polymer of amino acids; DNA is a polymer of nucleotides.
8) The ability to tolerate lactose throughout life is most likely to be seen in ______.
A
Native Americans
B
populations that live in wet climates
C
populations that keep dairy herds
D
populations that live in cold climates
9) How do glucose and fructose compare?
A
They have the same formula but different structures.
B
They are structurally identical in every way.
C
Glucose has more double bonds.
D
Glucose has more hydrogen.
10) Which cookies are less healthy? Choc. mint cookies: 5 g of saturated fat, 0 g of trans fat, 22 g of carbohydrates, and 11 g of protein or peanut butter cookies: 0 g of saturated fat, 5 g of trans fat, 26 g of carbohydrates, and 4 g of protein?
A
The peanut butter cookies because they contain more grams of carbohydrates.
B
The chocolate mint cookies because they contain more total grams of protein and carbohydrates.
C
The chocolate mint cookies because they contain more saturated fat.
D
The peanut butter cookies because they contain more trans fat.
*select an answer for all questions
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