Exam 21: Viruses, Bacteria, Archaea, and Protists: the Diversity of Life 1

Bacteria are considered to be a type of protist.

Match the following. A) rod-shaped bacteria B) structure found in many viruses, often "borrowed" from the host cell C) round-shaped bacteria D) organelle not found in both bacteria and eukaryotes E) type of organelle found in both bacteria and eukaryotes -Bacillus

Overuse of antibiotics has likely produced MRSA. MRSA stands for ________.

Which statement about the relationship between bacteria and the human body is most accurate?

Nearly half the antibiotics used in the United States go into animal feed as growth stimulants.

When a virus takes over the machinery of a cell, it forces the cell to manufacture more viral particles.

Which of the following is true of Domain Archaea compared to other groups?

Match the following. A) rod-shaped bacteria B) structure found in many viruses, often "borrowed" from the host cell C) round-shaped bacteria D) organelle not found in both bacteria and eukaryotes E) type of organelle found in both bacteria and eukaryotes -Fatty membrane called an envelope

Refer to the figure below, and then answer the following question(s). -The missing label indicated by a "1" corresponds to the:

Cells such as those of golden algae that form stable associations but do not take on specialized roles are described as:

Which of the following is the best description of a virus?

In what type of environment would you be most likely to find anaerobes?

A long, whip-like tail found in a protist is called a flagellum.

Which organisms accomplish most of the work of converting atmospheric nitrogen into a form usable to green plants?

Protists are arguably the most diverse of the eukaryotic kingdoms. Defend that statement using examples to support your ideas.

Refer to the scenario below, and then answer the following question(s). As part of your field biology independent study, you visit a small lake with an extremely high salt concentration. Searching with nets and other sampling devices, you find no fish, plants, algae, or any visible signs of life in the lake. Still, you decide to take a few samples of the water back to the lab. You find the sample teeming with very small cells, hundreds of times smaller than a typical human cell. These cells have cell walls, which you analyze chemically and find they are not made of peptidoglycan or cellulose. -Based upon the chemical experiments you performed, how would you classify these life-forms?

Volvox and Paramecium share which characteristic?

Bacteria store their DNA within a spherical nucleus.

Microscopic algae and bacteria produce over half of the oxygen in the atmosphere.

The process by which viruses can exchange genetic sequences to come up with a "new" virus such as H1N1 is: