The first information storage molecule was probably ____
a. DNA
b. RNA
c. protein
d. carbohydrates
e. lipids
ANSWER: b
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What is the term for a culture made from one isolated colony?
A. Pure B. Mixed C. Axenic D. Both axenic and mixed are correct. E. Both axenic and pure are correct.
When DNA ligase is used to combine a human fragment with a plasmid, the result is a redundant
plasmid. __________________ Indicate whether the statement is true or false.
Cystic fibrosis (CF) is caused by a recessive allele. A child has CF, even though neither of his parents has CF. This couple also has a child who does not have CF. What is the probability the unaffected child is heterozygous?
A) 1/4 B) 1/3 C) 2/3 D) 1/2 E) 3/4
A three-nucleotide sequence on an mRNA that codes for an amino acid is referred to as a/an:
A) anticodon. B) template. C) primary transcript. D) codon. E) tRNA.