1. If the codon on mRNA is GCA, then the anticodon on the complementary tRNA is
CGT
GCA
CGU
TGC
2. The bonds that hold the bases together in a DNA molecule are
covalent bonds
peptide bonds
hydrogen bonds
glycosidic bonds
3. Which of the following is TRUE?
1. Introns are expressed in the DNA
2. Exons are expressed in the DNA
3. Introns are expressed in the final protein
4. Exons are expressed in the final protein
1, 2, 3, 4
1, 2, 3
1, 2, 4
2, 3, 4
4. Humans have about _____________ protein-coding genes.
4,000
21,000
100,000
100,000
5. During replication, all the DNA in a chromosome is copied.
True
False
6. Which of the following structures have double-stranded DNA?
nuclear DNA
plasmid DNA
mitochondrial DNA
All of the above
7. If the sequence of the DNA template strand is as follows:
CATTATGGC then what is the mRNA that would be transcribed from that DNA strand?
CATTATGGC
GTAATACCG
CAUUAUGGC
GUAAUACCG
8. A gene can code for which of the following items?
protein
mRNA
rRNA
tRNA
All of the above
9. Which of the following structures is a basic structural subunit of chromatin composed of DNA wrapped around histone proteins?
chromosome
mRNA
tRNA
rRNA
nucleosome
intron
10. Transcription factors are protein molecules.
True
False