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

The viral capsid is:

Which organisms form the basic foundation of the food chain in the ocean?

Virus-like entities called viroids lack a ________ and are simply strands of infectious RNA.

The core of some viruses is carbohydrate in nature.

Most protists are unicellular.

The simplest eukaryotes are the bacteria.

Match the following. A) bubonic plague B) "social amoeba" C) a Type-A influenza D) ciliated protist E) truly multicellular algae -Paramecium

Scientists do not consider viruses to be alive because viruses cannot metabolize outside a host cell.

The antibiotic penicillin inhibits the ability of bacteria to:

Some protists have locomotor extensions called ________ and ________.

What is the benefit of sexual reproduction in protists?

Photosynthetic aquatic microorganisms, such as some bacteria and protists, are known as ________.

Match the following. A) thermophile B) anaerobe C) halophile D) pseudopod E) heterotroph -"Other-eater"

The material in the core of HIV (AIDS virus) is:

Entamoeba histolytica is a/an:

Spherical bacteria are called cocci.

Rod-shaped bacteria are called spirochetes.

An example of a protist intestinal parasite would be:

Chlamydomonas "mating types" differ in what way?

A major difference between bacteria and eukaryotes is that bacteria have: