BIO 250 FINAL EXAM REVIEW QUESTIONS AND
ANSWERS; 100% PASS GUARANTEED; GRADED A+
. The Archaea ...
a. are phylogenetically diverse, but functionally restricted to
extremophiles and chemolithotrophs.
b. are diverse microorganisms that inhabit almost every environment on
Earth, including the colon of humans and other mammals.
c. Are a domain of microorganisms, some of which are extreme
halophiles that can grow in water that has up to 33% sodium chloride
d. (a) and (c) are correct
e. (b) and (c) are correct - correct answer- e
A ___________ agent is a chemical that inhibits bacteria from
reproducing, but does NOT
necessarily kill them.
a. bacteriocidal
b. bacteriolytic
c. bacteriological
d. bacteriostatic - correct answer- d
A bacterial cell doubles every 30 minutes under given laboratory
conditions. When a
,liquid broth is inoculated with 10 cells, how many cells will the culture
contain after
4 hours?
A) 40
B) 80
C) 160
D) 2560
E) None of the above - correct answer- d
A gram-positive microorganism has the following traits: filamentous,
forms spores at the end of mycelia, produces antibiotics, produces an
earthy smell, is nutritionally versatile, yields compact "dusty" colonies on
agar culture media. These traits describe the genus
a. Neisseria
b. Streptobacillus.
c. Streptomyces.
d. Mycobacterium.
e. Streptococcus - correct answer- c
A polymerase chain reaction (PCR)
a. can amplify a specific DNA sequence roughly 1 billion-fold.
b. consists of three mains steps that are repeated many times: for
example, incubation at 94°C to denature DNA strands, incubation at 60°C
for primer
, hybridization, and incubation at 72°C for DNA synthesis
c. translate DNA into proteins
d. both (a) and (b) are correct
e. both (b) and (c) are correct - correct answer- d
A pure culture
A) is sterile.
B) is a population of identical cells.
C) is made of a precisely defined chemical medium.
D) contains one microbial cell. - correct answer- b
Based on oxygen requirements, the genus Clostridium is classified as
_______________
a. aerobic
b. facultative aerobic
c. obligate anaerobic
d. microaerophilic
e. none of the above - correct answer- c
Based on the table in this exam: If the codon AAA is changed to AAU, it is
an example of a
a. silent mutation
ANSWERS; 100% PASS GUARANTEED; GRADED A+
. The Archaea ...
a. are phylogenetically diverse, but functionally restricted to
extremophiles and chemolithotrophs.
b. are diverse microorganisms that inhabit almost every environment on
Earth, including the colon of humans and other mammals.
c. Are a domain of microorganisms, some of which are extreme
halophiles that can grow in water that has up to 33% sodium chloride
d. (a) and (c) are correct
e. (b) and (c) are correct - correct answer- e
A ___________ agent is a chemical that inhibits bacteria from
reproducing, but does NOT
necessarily kill them.
a. bacteriocidal
b. bacteriolytic
c. bacteriological
d. bacteriostatic - correct answer- d
A bacterial cell doubles every 30 minutes under given laboratory
conditions. When a
,liquid broth is inoculated with 10 cells, how many cells will the culture
contain after
4 hours?
A) 40
B) 80
C) 160
D) 2560
E) None of the above - correct answer- d
A gram-positive microorganism has the following traits: filamentous,
forms spores at the end of mycelia, produces antibiotics, produces an
earthy smell, is nutritionally versatile, yields compact "dusty" colonies on
agar culture media. These traits describe the genus
a. Neisseria
b. Streptobacillus.
c. Streptomyces.
d. Mycobacterium.
e. Streptococcus - correct answer- c
A polymerase chain reaction (PCR)
a. can amplify a specific DNA sequence roughly 1 billion-fold.
b. consists of three mains steps that are repeated many times: for
example, incubation at 94°C to denature DNA strands, incubation at 60°C
for primer
, hybridization, and incubation at 72°C for DNA synthesis
c. translate DNA into proteins
d. both (a) and (b) are correct
e. both (b) and (c) are correct - correct answer- d
A pure culture
A) is sterile.
B) is a population of identical cells.
C) is made of a precisely defined chemical medium.
D) contains one microbial cell. - correct answer- b
Based on oxygen requirements, the genus Clostridium is classified as
_______________
a. aerobic
b. facultative aerobic
c. obligate anaerobic
d. microaerophilic
e. none of the above - correct answer- c
Based on the table in this exam: If the codon AAA is changed to AAU, it is
an example of a
a. silent mutation
