FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 8: Microbial Genetics

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

True/False

Review LaterAdd Note

Review Later

Cell-to-cell contact is required for transduction to occur.

A) True
B) False

Correct Answer

verified

Show Answer

Question 2

Multiple Choice

Review LaterAdd Note

Review Later

Synthesis of a repressible enzyme is stopped by the

A) substrate binding to the repressor.
B) corepressor-repressor complex binding to the operator.
C) corepressor binding to the operator.
D) allosteric transition.
E) end product binding to the promoter.

F) B) and C)
G) A) and D)

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

The miRNAs in a cell

Figure 8.3 - Metabolic Pathway $\begin{array} { c c } &\text { Gene } a & \text { Gene } b \\&\downarrow & \downarrow \\&\text { Enzyme A } & \text { Enzyme B } \\&\downarrow & \downarrow \\\text { Compound A } & \rightarrow &\text { Compound B } \rightarrow \text { Compound C }\end{array}$ -In Figure 8.3, if enzyme A is an inducible enzyme,

Figure 8.2 -In Figure 8.2, base 2 (and ONLY the base) is covalently bound/attached to

Table 8.2 Codon on mRNA and corresponding amino acid $\begin{array} { | l | l | l | l | } \hline \text { UUA } & \text { leucine } & \text { UAA } & \text { nonsense } \\\hline \text { GCA } & \text { alanine } & \text { AAU } & \text { asparagine } \\\hline \text { AAG } & \text { lysine } & \mathrm { UGC } & \text { cysteine } \\\hline \text { GUU } & \text { valine } & \mathrm { UCG } , \mathrm { UCU }& \text { serine } \\\hline\end{array}$ -Refer to Table 8.2. What is the sequence of amino acids encoded by the following sequence of bases in a strand of DNA (pay attention to the polarity of the DNA here) ? 3? ATTACGCTTTGC

Which of the following is NOT a product of transcription?

Recombination will always alter a cellʹs genotype.

Transposition (insertion of a transposon into a DNA sequence) results in the formation of base substitution mutations in a cellʹs DNA.

According to the operon model, for the synthesis of an inducible enzyme to occur, the

An enzyme that makes covalent bonds between the sugar of one nucleotide and the phosphate groups in another nucleotide in DNA is

The miRNAs in a cell inhibit protein synthesis by forming complementary bonds with rRNA.

Figure 8.2 -In Figure 8.2, if base 4 is thymine, what is base 4ʹ?

Mutations that are harmful to cells occur more frequently than those that benefit cells.

In the Ames test, any colonies that form on the control should be the result of spontaneous mutations.

The initial effect of ionizing radiation on a cell is that it causes

An enzyme that catalyzes the cutting and resealing of DNA, and is translated from insertion sequences, is

Figure 8.4 In Figure 8.4, the antibiotic chloramphenicol binds the 50S large subunit of a ribosome as shown (the light gray area is the large subunit, while the black shape is the drug) . From this information you can conclude that chloramphenicol

Conjugation differs from reproduction because conjugation

Figure 8.3 - Metabolic Pathway $\begin{array} { c c } &\text { Gene } a & \text { Gene } b \\&\downarrow & \downarrow \\&\text { Enzyme A } & \text { Enzyme B } \\&\downarrow & \downarrow \\\text { Compound A } & \rightarrow &\text { Compound B } \rightarrow \text { Compound C }\end{array}$ -In Figure 8.3, if compound C reacts with the allosteric site of enzyme A, this would exemplify