Question 1

Over 100 microbial genomes have been sequenced.Beyond yielding insight into microbial genetics,these sequencing projects have been important because:

Accepted Answer

A) they allow insights into microbial pathogenicity. 
B) knowing how many chromosomes a microbe has lets us know if it causes disease. 
C) without the sequence of the genome we cannot tell what the organism uses as its genetic material. 
D) it demonstrates that microorganisms do not cause infectious diseases.

Question 2

Which statement about variolation is false

Accepted Answer

A) Variolation originated in ancient China. 
B) Variolation involves infecting a person with dried scabs from lesions of people who had recovered from the disease. 
C) Variolation used chemicals produced from another microorganism to immunize against the disease causing microbe. 
D) Variolation leads to a controlled infection that induces immunity against further infection.

Question 3

From the following choices,who is not known primarily for their work with antibiotics

Accepted Answer

A) Alexander Fleming 
B) Gregor Mendel 
C) Selman Waksman 
D) Gerhard Domagk

Question 4

The concept of putting microbes to work to clean up the environment is called:

Accepted Answer

A) bioremediation 
B) pasteurization 
C) immunization 
D) fermentation

Question 5

A microorganism that causes disease is _______ .

Accepted Answer

A) pathogenic 
B) phagocytic 
C) virulent 
D) algae

Question 6

All of the following are considered microbes except:

Accepted Answer

A) viruses 
B) bacteria 
C) protozoa 
D) worms

Question 7

Vaccines are:

Accepted Answer

A) specific disease-causing molecules that incorporate into cells 
B) the causative agent of Black Death 
C) selective chemicals used to treat infectious disease 
D) preparations that establish immunity to a disease

Question 8

Microbiologists investigate problems by designing and carrying out experiments.What is true about the scientific method

Accepted Answer

A) A hypothesis is the definitive explanation to account for the observation and therefore does not need to be tested. 
B) A prediction is the factor that can change but is prevented from changing during the duration of the experiment. 
C) A good hypothesis is one that offers the simplest most reasonable explanation and can be tested. 
D) The goal of an experiment is to prove that scientists are always correct in their predictions.

Question 9

The study of chemical reactions that occur in microbes is called _____.

Accepted Answer

A) microbial ecology 
B) taxonomy 
C) microbial metabolism 
D) epidemiology

Exam 1: Scope and History of Microbiology