10/15 Review

10/15 Review

by Dianna Quijano

Multiple Choice

The commensal bacteria that live inside your gut are an example of this.

• the human microbiota

• the human microbiome

• virulence

Multiple Choice

A geneticist analyzes a sample of the DNA of bacteria living on human skin. What is she analyzing?

• the human microbiota

• the human microbiome

• virulence

Multiple Choice

Certain bacteria release toxins to destroy human host cells. What are those toxins called?

• virulence factors

• chemical catalysts

• virulence

Multiple Choice

How is the microbiome different from the microbiota?

• The microbiome contains ALL the living germs on your body. The microbiota contains ONLY their genome.

• The microbiota contains ALL the living germs on your body. The microbiome contains ONLY their genome.

• The microbiota contains all the energy of the germs. The microbiome contains ONLY their virulence

Multiple Choice

When does a microbe make the host sick?

• when one germ invades a cell

• when hundreds of germs invade many cells

• when one germ releases virulence factors

Multiple Choice

A single Ebola virus invades a human host. When will the host become sick?

• when one Ebola virus enters a host cell

• when one Ebola virus creates clones in a single cell

• when one Ebola virus replicates to create hundreds of Ebola viruses in many cells

Multiple Choice

A novel (new) pathogen secretes a chemical that induces host cell apoptosis (cell death).

• direct damage

• indirect damage

• both

Multiple Choice

An extracellular pathogen spreads to the fallopian tubes of a human woman. The immune system notices it and kills healthy cells as it attacks the microbe.

• direct damage

• indirect damage

• both

Multiple Select

Staphylococcus Aureus is an extracellular germ. How will it damage the host? (SELECT ALL)

• release toxins

• immune system damages host

• use clones to explode outwards from inside the host cell

Multiple Choice

A bacteria invades its host and steals energy molecules from its host. Predict the outcome.

• The host cell runs out of energy as the bacteria replicates

• the host cell overproduces energy molecules

• the host and parasite live together symbiotically

Multiple Choice

A bacteria invades its host and steals energy molecules from its host.

• Indirect Damage

• Direct Damage

Multiple Choice

Make a prediction: What will happen after an intracellular pathogen uses up all the host cell's resources?

• The pathogen will die along with the host cell

• The pathogen will burst from the host cell and seek out new hosts

• the pathogen will return the nutrients to the host so that the host cell lives

Multiple Choice

How are intracellular bacteria different from extracellular bacteria?

• intracellular bacteria live longer than extracellular bacteria

• intracellular bacteria live inside host cells. Extracellular bacteria live outside.

• Intracellular bacteria alert immune system cells. Extracellular cells do not.

Multiple Choice

Warts are caused by human papillomavirus. The virus invades its host for the host's lifetime. What replication cycle is most likely?

• fast

• slow

Multiple Choice

The tuberculosis bacteria can live inside a human host for YEARS without any symptoms. Which method of replication does it have?

• fast

• slow

Multiple Choice

The Ebola virus causes symptoms within 10 days of initial infection. After which time, patients experience internal bleeding. Half of patients die after infection.

• fast replication

• slow replication

Multiple Choice

Vibrio cholerae bacteria release toxins in the gut . Patients often immediately experience diarrhea for a short period of time.

• fast replication

• slow replication