Chapter 7 - Module 02: Microbial Genetics

In which of the following locations in a eukaryotic cell would we find DNA molecules? Golgi body Nucleus Mitochondria Cloroplast

2,3,4

The transfer of DNA between bacterial cells is often facilitated by which of the following?

A pilus

Transcription and translation are what type of metabolic pathways?

Anabolic

Quorum sensing is a bacterial phenomenon related to the presence of which of the following?

Biofilms

All of the following are possible base pair combinations in nucleic acids except __________. C-T A-T G-C A-U

C-T

Which of the following statements is the most complete?

Conjugation can occur among bacteria of widely varying kinds and even between a bacterium and a yeast cell or between a bacterium and a plant cell.

Which of the following statements concerning the structure of DNA is false? DNA contains the sugar deoxyribose. DNA contains the nitrogenous bases A, C, G, and U. The two strands of a DNA molecule are held together by hydrogen bonds. The two strands of a DNA molecule are antiparallel to each other.

DNA contains the nitrogenous bases A, C, G, and U.

Which of the following is not a monomer? Amino acids Nucleotides Deoxyribonucleic acid Monosaccharides

Deoxyribonucleic acid

Which of the statements below is a characteristic of DNA polymerase but not RNA polymerase?

It exhibits efficient proofreading capability.

Which of the following statements concerning RNA is false? It provides energy for cells. It can consist of codons and anticodons. It serves as a structural component of ribosomes. It acts as a template for protein synthesis.

It provides energy for cells.

Pyrimidines are molecules used in the synthesis of which of the following?

Nucleic acids

Which of the following is associated with the lagging strand during DNA replication?

Okazaki fragments

Which statement about prokaryotic ribosomes is incorrect? Prokaryotic ribosomes make good targets for antimicrobials. Prokaryotic ribosomes are composed of two subunits: 50S and 30S. Prokaryotic ribosomes are identical to eukaryotic ribosomes. Prokaryotic ribosomes have three tRNA binding sites.

Prokaryotic ribosomes are identical to eukaryotic ribosomes.

Lactose induces gene expression in the lac operon by binding which molecule?

Repressor

Nancy fell and broke her hip at the nursing home where she lived. She was sent to the hospital and received a hip replacement; however, she suffered complications which extended her hospital stay for several weeks. Her medical records revealed that she had a Foley catheter and a feeding tube. Records also revealed that Nancy acquired a nasty urinary tract infection (most likely associated with her Foley catheter). Urine cultures were performed, and multi-drug-resistant (MDR) Enterococci was isolated. Nancy was treated with a variety of drugs to no avail, and she died after 2 months of treatment. Two E. coli cells are connected by a pilus. In which of the following ways could the Enterococci isolated from Nancy's urine have become multidrug resistant?

Transformation, transduction, or conjugation

Cultures that are visible on the surface of a solid growth medium are known as __________.

colonies

The chromosomes of a prokaryotic cell can be found in its __________.

nucleoid region

Radiation causes DNA mutations by __________. producing ions breaking covalent bonds between the sugars and phosphates of DNA performing all of these actions producing thymine dimers

performing all of these actions

The amino acid sequence of a protein constitutes its __________.

primary structure

All of the following are associated with the nucleus of a eukaryotic cell except __________. chromatin histones ribosomes DNA

ribosomes

The central dogma of genetics consists of __________.

transcription and translation