BIOL 2420 Exam 3

Infectious protein particles are called

Prions

Viruses have all of the following except

Metabolism

Cilia are found in certain

Protozoa

Which organelle contains enzymes for ATP

Mitochondria

Which of the following parts of a virus is not always present

envelope

The capsomers are made of

Protein

Which is not a characteristic of fungi?

Fungi are photosynthetic

How do enveloped animal viruses exist their host?

Budding or exocytosis

The most common helminthic infection in the U.S. is caused by a tapeworm.

False

All of the following are sources of human infections with helminths except

Contaminated air

Red Tide occurs when his organism has a rapid amount of growth (bloom) along the coastline

Dinoflagellates

Fungi are autotrophic

False

The event that occurs in bacteriophage multiplication that does not occur in animal virus replication is

injection of the viral nucleic acid into the host cell

Chaga's disease is a common protozoal infection caused by which organism?

Trypanosoma cruzi

Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called

Latent

Cell walls are not found on typical cells of

Protozoa

The virus

induced, specific damages to the host cell that can be seen in a light, microscope is called

The eukaryotic cell's glycocalyx is

Mostly polysaccharide

Mushrooms are often seen sprouting from lawns because if there is enough sunlight for grass to grow, there is generally enough sunlight for mushrooms to photosynthesize.

False

Filamentous fungi are called

Molds

Satellite viruses are

Dependent on the other viruses for replication

Organelles fund in algae but not found in protozoa or fungi are the

Chloroplasts

Viral infections are easier to treat with drugs than bacterial infections.

False

Resistance factor plasmid are transferred to other bacterial cells during conjugation.

True

All of the following is correct about treating viral diseases except

Viruses are killed by the same antibiotics that kill bacteria

Host cells of viruses include

All of the choices are correct (Plants and fungi, human and other animals, bacteria, and protozoa and algae)

An organelle that is a stack of flattened, membranous sacs and functions to receive, and modify, and package proteins for cell secretion is the

Golgi apparatus

The core of every virus particle always contains

Either DNA or RNA

Protists include

Algae and protozoa

Chitin is chemical component of the cell walls

Fungi

Host range is limited by

Type of cell receptors on cell membrane

In general, RNA viruses multiply in the cell \____, and DNA viruses multiply in the cell \___.

Cytoplasm, nucleus

The correct sequence of events in viral multiplication is

adsorption, penetration, replication, assembly, maturation, release

The Kirby

Bauer test uses an agar surface, seed with the test concentration of several drugs are placed on the surface.

There are fewer antifungal, antiprotozoan, and anthelminthic drugs compared to antibacterial drugs because these organisms

Are similar to human cells that selective drug toxicity is difficult to achieve.

What do zygospores, and basidiospores have in common?

They are sexual spores

The motile, feeding stage of protozoa is called

Trophozoite

Which of the following is not a mode of action of an antiviral?

Bond to ergosterol in the cell membrane

Contained fresh water that enters the nose can results a devastating infection of the brain. The organism that causes this infection is known as \____.

Naegleria fowleri

Mycosal infections of the hair are classified as

Cutaneous

Antivirals that target reverse transcriptase would be used to treat

HIV

Superinfections results from

Decrease in most normal microbiota with overgrowth of an unaffected species

Which of the following spores are produced within a sac?

Sporangiospores

Creutzfeld

Jacob disease is

When a virus enters a lysogenic phase, it means

The virus is integrated into the DNA of the host cell and is latent.

Why has the United States and Europe banned the use of human drugs in animal feeds?

Because it contributes to the growing drug resistance problem

Which of the following describes the mechanism of action for AZT?

It is a thymine analog that interferes with the synthesis of DNA from HIV RNA template.

Fungi that grow as yeast at one temperature but will grow as mold at another temperature are called

Dimorphic

Which body system is mainly affected by Creutzfeldt

Jacob syndrome?

Viruses cannot multiply unless it invades a host cell; therefore, they are considered

True intracellular parasites