Exam 1: Bacterial Cell Structure, Physiology, Metabolism, and Genetics

What constituent of a gram-positive cell wall absorbs crystal violet but is not dissolved by alcohol, thus giving the gram-positive cell its characteristic purple color?

What class of organisms are Clostridium sp.that can live in the presence of oxygen but do not use oxygen in its metabolic processes?

Which of these bacteria cannot grow in the presence of oxygen?

All of the following statements are true about viruses except viruses:

Which is a biochemical process carried out by both obligate and facultative anaerobes?

What form of DNA is commonly found in eukaryotic cells?

In the medical microbiology laboratory, a gram-negative bacterium's ability to ferment what sugar is the first step in its identification?

If bacteria utilize various carbohydrates for growth, they is usually detected by:

The outer cell wall of the gram-negative bacteria serves three important functions, which includes all the following except it

A microbiologist is working with two separate cultures of the same organism.The bacteria in one culture are resistant to penicillin, whereas the bacteria in the other culture are susceptible to penicillin.The bacteria from both cultures are mixed together, and all the resulting bacteria are resistant to penicillin.What caused this phenomenon?

What is the purpose of a capsule?

The function of a cell wall is to:

A microorganism that is a unicellular organism and lacks a nuclear membrane and true nucleus belongs to which classification?

Which of the following environmental factors influence the growth of bacteria in the laboratory?

A clinical laboratory scientist is working in a microbiology laboratory where she receives a viral culture.Should she make a smear on a glass slide so that she can look at the virus under the light microscope?

Why is the interior of the plasma membrane potentially impermeable to water-soluble molecules?

Genes that code for antibiotic resistance are often found on small, circular pieces of DNA.These DNA pieces are called:

Bacterial species that exhibit phenotypic differences are considered:

In what staining procedure does carbolfuchsin penetrate the bacterial cell wall through heat or detergent treatment?

Who was considered the father of protozoology and bacteriology?