Exam 17: Biological Diversity, Bacteria, and Archaea

Some prokaryotes break down dead organisms and waste products to return the chemical elements back into the environment in a process called ________.

A patient with an infection is suffering from chills and a high fever caused by endotoxin.The patient is infected with a(n)

The following diagram is an evolutionary tree showing the relationship between the three domains.Which letter represents the most recent common ancestor of the Bacteria and Archaea?

Which of the following is most likely caused by bacterial conjugation?

Humans usually do NOT contract bacterial diseases from other animals because

Prokaryotes differ in several ways from eukaryotes;one of the most distinctive is

Which of the following statements about the human intestinal microbiome is correct?

Bacteria and fungi never occupy the same ecological niche.

Microscopic examination can often resolve questions in taxonomy;for example,cells that possess a nucleus are never classified as

Recent studies indicate that the microbial diversity within the human intestine changes frequently in most people.

Staphylococcus aureus are bacteria that frequently cause infections in surgery patients.What is the shape of a Staphylococcus aureus cell?

The kingdom Bacteria consists of the same species as the domain Bacteria.

Antibiotics are not effective against nonliving infections.

A viral particle is very simple,consisting of a core of DNA or RNA surrounded by a ________.

With the exception of the ________,the following kingdoms are placed within the domain Eukarya.

There are currently three recognized domains;which of the following is NOT included within this system?

A scientist discovers a new soil bacteria.The bacteria are impossible to grow on culture dishes in the laboratory.What is the most likely method by which the scientist discovered the bacteria?

A young girl swimming in a lake on a warm summer day is infected with the amoeba Naegleria fowleri.She is infected with a(n)

H1N1 is a strain of the influenza virus.

Like any disease or parasite,viruses need to reach new hosts to extend the infective cycle,which explains why such a large number of viral infections are associated with the