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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
DNA
C
nucleiotide
D
monosaccharide
2) The four DNA nucleotides (nitrogen bases) include ______.
A
thymine, guanine, adenine, and uracil
B
uracil, guanine, adenine, and cytosine
C
thymine, guanine, adenine, and cytosine
D
thymine, uracil, adenine, and cytosine
3) A specific stretch of DNA that programs the amino acid sequence of a polypeptide is a ______.
A
gene
B
protein
C
enzyme
D
nucleic acid
4) Which nitrogen bases pair up in DNA?
A
A-G, C-T
B
A-U, C-T
C
A-T, C-U
D
A-T, C-G
5) If one strand of a DNA double helix has the sequence AGTACTG, what will be the sequence of the other strand?
A
AGTACTG
B
GACGTCA
C
GTCATGA
D
TCATGAC
6) The shape of DNA is a(n) _____________.
A
double helix
B
octagon
C
triple ring
D
single helix
7) How does RNA differ from DNA?
A
RNA contains uracil; DNA contains thymine.
B
In RNA G pairs with T; in DNA G pairs with C.
C
RNA is a polymer of amino acids; DNA is a polymer of nucleotides.
D
RNA is double-stranded; DNA is single-stranded.
8) The ability to tolerate lactose throughout life is most likely to be seen in ______.
A
populations that live in wet climates
B
populations that live in cold climates
C
populations that keep dairy herds
D
Native Americans
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 hydrogen.
D
Glucose has more double bonds.
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 chocolate mint cookies because they contain more saturated fat.
B
The chocolate mint cookies because they contain more total grams of protein and carbohydrates.
C
The peanut butter cookies because they contain more grams of carbohydrates.
D
The peanut butter cookies because they contain more trans fat.
*select an answer for all questions
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