biology chapter 9
If a strand of DNA of sequence 5'-AATAGCGCGGTATTC-3' is replicated, which of the following accurately represents the newly-synthesized DNA strand?
3'-TTATCGCGCCATAAG-5'
Which of the following accurately shows DNA base pairing and hydrogen bond number?
Adenine—Thymine ; 2 hydrogen bonds
Which enzyme is responsible for putting together new DNA segments produced on the lagging strand during DNA replication?
DNA ligase
What enzyme is responsible for adding nucleotides to a growing DNA chain during replication?
DNA polymerase
The initial mechanism for repairing nucleotide errors in DNA is _________.
DNA polymerase proofreading
How long would the peptide be that is translated from this MRNA sequence: 5'-AUGGGCUACCGA-3'?
How long would the peptide be that is translated from this MRNA sequence: 5'-AUGGGCUACCGA-3'?
Which of the following events takes place during DNA replication?
Okazaki fragments are formed in a 5' to 3' direction
The flow of molecular information from genes to RNA to proteins is referred to as what?
The central dogma
The strand of DNA in the figure above that will be copied first as a series of fragments (and later joined together by DNA ligase) is labeled how?
The lagging strand is labeled with 5'.
Gene expression refers to what process?
The process of transcribing DNA into RNA and translating RNA into protein
A promoter is ___________.
a specific sequence of DNA nucleotides
Which of the following is NOT a component of nucleotides (the building blocks of DNA)
deoxyglucose
Which of the following does cytosine pair with?
guanine
Portions of eukaryotic mRNA sequence that are removed during RNA processing are ________.
introns
The three types of RNA involved in gene expression are ___________.
mRNA, tRNA, and rRNA
The RNA components of ribosomes are synthesized in the ________.
nucleolus
What molecule connects the sugars in a strand of DNA?
phosphate
The nitrogenous base thymine is what type of base?
pyrimidine
Post-translational control refers to _____________.
regulation of gene expression after translation
DNA replicates by which of the following models?
semiconservative
