Problem 1
Figure 9.10 You isolate a cell strain in which the joining together of Okazaki fragments is impaired and suspect that a mutation has occurred in an enzyme found at the replication fork. Which enzyme is most likely to be mutated?
Problem 1
You isolate a cell strain in which the joining together of Okazaki fragments is impaired and suspect that a mutation has occurred in an enzyme found at the replication fork. Which enzyme is most likely to be mutated?
Problem 2
Which of the following does cytosine pair with? a. guanine b. thymine c. adenine d. a pyrimidine
Problem 3
Prokaryotes contain a chromosome, and eukaryotes contain chromosomes. a. single-stranded circular; single-stranded linear b. single-stranded linear; single-stranded circular c. double-stranded circular; doublestranded linear d. double-stranded linear; double-stranded circular
Problem 4
DNA replicates by which of the following models? a. conservative b. semiconservative c. dispersive d. none of the above
Problem 5
The initial mechanism for repairing nucleotide errors in DNA is a. mismatch repair b. DNA polymerase proofreading c. nucleotide excision repair d. thymine dimers
Problem 6
A promoter is a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides C. a protein that binds to DNA d. an enzyme that synthesizes RNA
Problem 7
Portions of eukaryotic mRNA sequence that are removed during RNA processing are a. exons b. caps C. poly-A tails d. introns
Problem 8
The RNA components of ribosomes are synthesized in the ________. a. cytoplasm b. nucleus C. nucleolus d. endoplasmic reticulum
Problem 9
How long would the peptide be that is translated from this MRNA sequence: \(5^{\prime}\) AUGGGCUACCGA-3'? a. 0 b. 2 c. 3 d. 4
