Exam 26: Bacteria and Archaea: the Prokaryotic Domains

Use the following to answer questions: Refer to the diagrams below, showing sections through the cell wall of Gram-positive and Gram-negative bacteria. -Which of the labels (A, B, C, D) correspond to the peptidoglycan layers?

Which of the following nutritional categories of bacteria can exist independently of other organisms?

Which of the following is not a form or method of prokaryotic locomotion?

One of the major diagnostic characteristics that distinguishes archaea from bacteria is the absence of

Which of the following statements about Archaea is false?

A bacterium that requires a carbon source other than carbon dioxide, yet can convert light energy to chemical energy, is called a

Of the four nutritional categories of archaea and bacteria, most are _______, as are all animals, fungi, and many protists.

In light, purple sulfur bacteria use H₂S as an electron donor and release pure sulfur as a waste product. They are examples of

Negative-sense single-stranded RNA viruses are thought to have arisen many times independently because

Rod-shaped bacteria are referred to as

Which of the following virus types inserts a double-stranded DNA copy of its genome into the host cell's genome?

_______ have a branched system of filaments and can resemble fungi.

You work with the Centers for Disease Control in Atlanta. You have been called to a remote area of Uganda to study a mysterious disease that is causing respiratory ailments in a small village. You isolate a bacterium from several patients that seems like a good candidate for the pathogen. How can you determine if this bacterium is causing the illness?

You work for a wastewater treatment plant. An organism is getting past your treatment process, and fish are dying in a stream that the runoff enters. You are able to isolate the organism. Using a microscope, how can you tell if the organism is a prokaryote or a eukaryote?

Examining the spectroscopy data shown below, what can you conclude about the different types of chlorophyll found in purple sulfur bacteria and green alga?

Which of the following statements about Archaea is false?

A patient comes to your medical practice with a bacterial infection. You are terribly concerned because the bacteria responsible for the patient's infection produce an exotoxin. Why are exotoxins often more dangerous than endotoxins?

The earliest prokaryotic fossils date back at least _______ years.

An ecologist examining a plant with yellow, sick-looking leaves wonders if the fungus found on its roots is the pathogenic organism. Which of the following steps would be necessary in order to confirm that the fungus is responsible for the disease?

The _______ of cyanobacteria carry out _______, whereas the _______ carry out _______.