Answer:
Step-by-step explanation:
1)Which of the following is true of genes?
Genes consist of DNA.
Genes are on chromosomes.
Some genes encode rRNAs
All of the above are true
2) Shown below is a diagram of a eukaryotic replication bubble with only the template shown. Which bracket in this diagram indicates where we would see Okazaki fragments during DNA replication? (Examine the template DNA very carefully before answering this question!)
xid-19060266_1
A
B
C
D
3) Which of the following statements is FALSE?
In bacteria, transcription and translation can happen simultaneously, whereas in eukaryotes they cannot.
Regulation of transcription in eukaryotes is more complex and specific than in bacteria, as different genes are regulated very specifically through cell- and context-dependent transcription factors.
Transcription in eukaryotes must be accompanied by alterations in chromatin structure.
Bacterial genes have an A/T-rich core promoter whereas eukaryote genes do not.
4) Which of the following bases are most common in both the origin of replication and the transcriptional core promoter and why?
A's and T's; because they are not held together as tightly as G's and C's
A's and T's; because they are easier for proteins to bind to
G's and C's; because they are held together more tightly than A's and T's and therefore make the DNA more stable
G's and C's; because they are purines, which make better templates
5) Which of the following is true for DNA replication but not RNA transcription?
It requires a primer.
It requires a template.
It polymerizes 5' to 3'.
It depends on unwinding of DNA.
All of the above are true for both replication and transcription.
6) In bacteria, rRNAs are transcribed in the:
cytoplasm
nucleus
ribosome
rough ER
7) Shown below is a drawing showing the result of an experiment in which an RNA molecule is allowed to mix with genomic DNA that has been denatured by boiling, and the two molecules are allowed to hybridize. The DNA strand is presumed to be the lighter-shaded one on the top. Note that only one strand of DNA is shown. Where is the 5' end of the RNA?
xid-19060253_1
To the left
To the right
Not enough information to tell
8) Which of the following types of RNAs are capped by 7-methyl guanosine and therefore have increased transport efficiencies and half-lives?
All RNAs
All eukaryotic RNAs
All mRNAs
Only eukaryotic mRNAs
9) Shown below is a drawing showing the result of an experiment in which an RNA molecule is allowed to mix with genomic DNA that has been denatured by boiling, and the two molecules are allowed to hybridize. The DNA strand is presumed to be the lighter-shaded one on the top. Note that only one strand of DNA is shown. This result was the first evidence for which of the following processes?
xid-19060259_1
Replication
Transcription
Translation
Splicing
10) In the presence of lactose, the lac repressor is:
Not synthesized.
Actively synthesized and binds to the lac operator to inhibit transcription.
Actively synthesized but inhibited by lactose.
Actively synthesized and activated by lactose.