Microbiology Proctored Exam (Hennepin Tech)

At temperatures higher than the maximum growth temperature for an organism,

A bacterium requires the amino acids, tryptophan, tyrosine, and cystine, to be present in the agar medium in order for them to grow in the lab. These amino acids would be considered

An organic nutrient that cannot be synthesized by the organism and must be provided is called a(n)

Most prokaryotes reproduce by undergoing

A microbe recovered from an environmental sample grows on a medium composed of agar and a mix of salts. The agar is not digested during incubation. The growth rate increases in high CO2 conditions. Th

Which of the following does NOT influence the growth of microbes?

E.coli bacteria that normally live in the human large intestines and produce vitamin K that the body uses would be best termed a ______ relationship.

An organism that can exist in both oxygen and oxygen-free environments is a(n)

Which group of bacteria are usually associated with human infections?

Organism that can use oxygen but can also function without oxygen are termed

When a _____inhibitor molecule binds to an allosteric site on an enzyme, the shape of the active site changes so that the substrate molecules can no longer fit.

Which of the following would be a final electron acceptor for anaerobic respiration?

Inducible enzymes

The most likely place where an exoenzyme participates in a chemical reaction is

Changes in temperature or pH can cause enzymes to lose activity. What is a common feature of these two effects?

Which of the following statements is MOST accurate concerning metabolism?

Sulfanilamide is an antimicrobial drug that mimics the shape of an important substrate for a particular bacterial enzyme and can bind in its active site, thereby inhibiting the enzyme. This type of in

A holoenzyme

Enzymes that function inside a cell are

Your bacterium is growing on a type of medium called casein agar, which contains milk protein (casein). There is a clear zone around the growth area of the bacterium, showing that it is synthesizing t

In prokaryotes, the chromosomal DNA is typically

Amino acids are delivered to the ribosome by

The _____ test is used for detecting chemicals with carcinogenic potential.

In Griffith's experiments with Streptococcus pneumoniae, rough non-encapsulated streptococci were converted into smooth encapsulated streptococci in the presence of the heat-killed smooth encapsulated

The process by which an RNA is used by some types of viruses to synthesize a DNA is called