Ch. 3 The Molecules Of Life: Question Preview (ID: 16389)


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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 trans fat. d) The peanut butter cookies because they contain more grams of carbohydrates.
How do glucose and fructose compare?
a) They are structurally identical in every way. b) Glucose has more hydrogen. c) Glucose has more double bonds. d) They have the same formula but different structures.
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
The shape of DNA is a(n) _____________.
a) octagon b) single helix c) double helix d) triple ring
How does RNA differ from DNA?
a) RNA is double-stranded; DNA is single-stranded. b) RNA contains uracil; DNA contains thymine. c) RNA is a polymer of amino acids; DNA is a polymer of nucleotides. d) In RNA G pairs with T; in DNA G pairs with C.
If one strand of a DNA double helix has the sequence AGTACTG, what will be the sequence of the other strand?
a) GACGTCA b) AGTACTG c) GTCATGA d) TCATGAC
Nucleic acids are polymers of ______ monomers.
a) nucleiotide b) fatty acid c) DNA d) monosaccharide
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
A specific stretch of DNA that programs the amino acid sequence of a polypeptide is a ______.
a) enzyme b) protein c) gene d) nucleic acid
Which nitrogen bases pair up in DNA?
a) A-G, C-T b) A-T, C-G c) A-T, C-U d) A-U, C-T
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