M
Michelle
Guest
Finals are tomorrow, and I really need help with these. And, the answers aren't in my textbook or notes. PLEASE HELP!
1] The beta polypeptide of hemoglobin contains 146 amino acids. What is the minimum number of nucleotides required in the messenger RNA from which this polypeptide is translated?
a) 49
b) 73
c) 146
d) 292
e) 438
2] The energy that resides in ATP molecules becomes available when bonds between ____ are broken.
a) adenine and ribose
b) ribose and the first phosphate group
c) two phosphate groups
d) adenine and the first phosphate group
3] If one molecule of NADH and one molecule of FADH2 both give up their electron to the electron transport chain, the total number of molecules of ATP formed would be:
a) 1
b) 2
c) 4
d) 5
e) 6
4] In snapdragons, heterozygotes have pink flowers, whereas homozygotes have either red or white flowers. When plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers?
a) 0%
b) 25%
c) 50%
d) 75%
e) 100%
5] 2 individuals with identical genotypes may have different ____ depending on environmental influences.
a) alleles
b) phenotypes
c) mutations
d) loci
6] Segregation of alleles during meiosis does not occur in which of the following groups of organisms?
a) flowering plants
b) insects
c) flatworms
d) bacteria
e) ferns
1] The beta polypeptide of hemoglobin contains 146 amino acids. What is the minimum number of nucleotides required in the messenger RNA from which this polypeptide is translated?
a) 49
b) 73
c) 146
d) 292
e) 438
2] The energy that resides in ATP molecules becomes available when bonds between ____ are broken.
a) adenine and ribose
b) ribose and the first phosphate group
c) two phosphate groups
d) adenine and the first phosphate group
3] If one molecule of NADH and one molecule of FADH2 both give up their electron to the electron transport chain, the total number of molecules of ATP formed would be:
a) 1
b) 2
c) 4
d) 5
e) 6
4] In snapdragons, heterozygotes have pink flowers, whereas homozygotes have either red or white flowers. When plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers?
a) 0%
b) 25%
c) 50%
d) 75%
e) 100%
5] 2 individuals with identical genotypes may have different ____ depending on environmental influences.
a) alleles
b) phenotypes
c) mutations
d) loci
6] Segregation of alleles during meiosis does not occur in which of the following groups of organisms?
a) flowering plants
b) insects
c) flatworms
d) bacteria
e) ferns