Deck 8: Bacteria, Biodiversity of Protists and Fungi

Question 1

Amoebas move and feed by the means of

A) shrinkage and expansion of the cell.
B) absorption.
C) temporary extensions of the cell.
D) motor-like flagella.

Answer 1

temporary extensions of the cell.

Question 2

Which of the following is not a practical use of fungi?

A) culinary uses
B) production of medicines such as penicillin
C) use as an iron supplement
D) use in biology and biotechnology research

Answer 2

use as an iron supplement

Question 3

Which stage of the life cycle shown is the sporophyte?

A) stage A
B) stage B
C) stage C
D) stage D

Answer 3

stage D

Question 4

After reading the paragraph below, answer the question that follows.
Mould can be a huge problem in houses. In hot, humid climates like Florida entire houses have had to be thoroughly renovated or even completely abandoned due to the presence of moulds. Thus, understanding and mitigating mould contamination is of significant importance.

-What aspect of mould biology can be particularly problematic to people?

A) their ability to digest wood and thus weaken structures
B) their unsightly appearance
C) the formation of airborne spores which, if inhaled or ingested, can cause an allergic response
D) their slippery texture underfoot

Question 5

Bacteria can transfer DNA in which three ways?

A) translocation, transduction, and conjunction
B) donation, transformation, and transduction
C) translation, conjunction, and transduction
D) transformation, transduction, and conjugation

Question 6

The three methods bacteria transfer DNA are all examples of

A) vertical gene transfer.
B) molecule transformation.
C) horizontal gene transfer.
D) translating.

Question 7

An F factor can exist as a

A) plasma membrane.
B) plasma.
C) recombinant DNA.
D) plasmid.

Question 8

What type of plasmid carries genes for enzymes that destroy antibiotics and therefore can be very dangerous for human medicine?

A) F plasmids
B) R plasmids
C) endospore
D) bacteria cell

Question 9

After reading the paragraphs below, answer the question(s) that follow(s).
In the 1930s, the Navajo nation treated sheep and cattle for ticks and other parasites by using concrete "dip tanks." Animals were herded through one end of the tank and out the other. Each day, the tanks were filled with 200 000 gallons of insecticide and any remaining chemicals were emptied onto the ground. The pesticide solution seeped into the ground, ditches, and pits around the tanks. This was a common practice in the United States during that period.
The EPA Emergency Response Team (ERT) was called to the Navajo nation during the 1990s to investigate. They concluded that bioremediation procedures were the best for this site. Certain types of bacteria are able to feed on and digest toxic organic substances, such as pesticides, and use them as fuel for cell respiration. The ERT distributed the pesticide-eating microorganisms through the contaminated soil to remove the chemical residues. Once the contaminants are degraded, these microorganism populations die off because they've used all of their food supply.

-There are some possible problems associated with the approach detailed above. Which of the following does not describe a potential environmental risk?

A) The bacteria used to decontaminate the affected soil could evolve into something harmful that persists after the initial problem has been solved.
B) The bacteria used to decontaminate the affected soil could outcompete and eliminate other beneficial bacteria within the soil.
C) The bacteria used to decontaminate the affected soil could partially degrade the toxic material, leaving different toxic material.
D) The bacteria used to decontaminate the affected soil could need to be reapplied continually.