BIO 112 EXAM 2 QUESTIONS AND
CORRECT ANSWERS LATEST
UPDATE GUARANTEED GOOD
GRADES.
, 1. All of the following are true about SARS-CoV-2 infection EXCEPT CORRECT ANSWER CORRECT
ANSWER The new virions stay within the host cell and do not leave
2. If each of the following prokaryotes were to possess a cell wall, which one of these will most likely be resistant
to plasmolysis in hypertonic environ- ments? CORRECT ANSWER extreme halophiles
3. SARS-CoV-2 spreads via
A. respiratory droplets
B. aerosols or droplet nuclei
C. fomite (infected surfaces)
D. All of the above (A, B, & C)
E. Only A & C CORRECT ANSWER D. All of the above (A, B, & C)
4. Which of the following represent functions of the bacterial capsule? CORRECT ANSWER all of these are
functions associated with the capsule
5. The diplomonad Giardia and the parabasalid Trichomonas have all in com- mon except CORRECT
ANSWER CORRECT ANSWER two equal sized nuclei
6. Which of the following DOES NOT describe SARS-CoV-2? CORRECT ANSWER Its DNA is repli- cated in
the host
7. The devolution or regression hypothesis of the evolution of virsuses sug- gests that CORRECT ANSWER
CORRECT ANSWER Viruses evolved from more complex free-living organisms that lost genetic material as they
adapted to a parasitic lifestyle.
8. Many antibiotics work by inhibiting the synthesis of peptidoglycan, a com- ponent of the bacterial cell wall.
What is a possible mechanism of action for anti-fungal drugs? CORRECT ANSWER inhibiting the synthesis of
chitin in fungi
9. You are given three test tubes, each containing an unknown protist, and your task is to read the following
description and match these four protists to the correct test tube. When light, especially red and blue light, is
shone on the tubes, oxygen bubbles accumulate on the inside of test tubes 1 and
2. Chemical analysis of test tube 1 indicates the presence of a chemical that is toxic to fish and humans. Chemical
analysis of test tube 2 indicates the presence of substantial amounts of silica. Microscopic analysis of organisms in
test tubes 1 and 3 reveals the presence of permanent, membrane-bounded sacs just under the plasma membrane.
Further microscopic analysis of the contents in test tube 3 reveals the presence of one large nucleus and one small
nucleus in each organism. CORRECT ANSWER Paramecium
10. Which of the following statements about scientific models is false CORRECT ANSWER CORRECT
ANSWER they precisely predict what will happen given available information and reasonable as- sumptions
CORRECT ANSWERS LATEST
UPDATE GUARANTEED GOOD
GRADES.
, 1. All of the following are true about SARS-CoV-2 infection EXCEPT CORRECT ANSWER CORRECT
ANSWER The new virions stay within the host cell and do not leave
2. If each of the following prokaryotes were to possess a cell wall, which one of these will most likely be resistant
to plasmolysis in hypertonic environ- ments? CORRECT ANSWER extreme halophiles
3. SARS-CoV-2 spreads via
A. respiratory droplets
B. aerosols or droplet nuclei
C. fomite (infected surfaces)
D. All of the above (A, B, & C)
E. Only A & C CORRECT ANSWER D. All of the above (A, B, & C)
4. Which of the following represent functions of the bacterial capsule? CORRECT ANSWER all of these are
functions associated with the capsule
5. The diplomonad Giardia and the parabasalid Trichomonas have all in com- mon except CORRECT
ANSWER CORRECT ANSWER two equal sized nuclei
6. Which of the following DOES NOT describe SARS-CoV-2? CORRECT ANSWER Its DNA is repli- cated in
the host
7. The devolution or regression hypothesis of the evolution of virsuses sug- gests that CORRECT ANSWER
CORRECT ANSWER Viruses evolved from more complex free-living organisms that lost genetic material as they
adapted to a parasitic lifestyle.
8. Many antibiotics work by inhibiting the synthesis of peptidoglycan, a com- ponent of the bacterial cell wall.
What is a possible mechanism of action for anti-fungal drugs? CORRECT ANSWER inhibiting the synthesis of
chitin in fungi
9. You are given three test tubes, each containing an unknown protist, and your task is to read the following
description and match these four protists to the correct test tube. When light, especially red and blue light, is
shone on the tubes, oxygen bubbles accumulate on the inside of test tubes 1 and
2. Chemical analysis of test tube 1 indicates the presence of a chemical that is toxic to fish and humans. Chemical
analysis of test tube 2 indicates the presence of substantial amounts of silica. Microscopic analysis of organisms in
test tubes 1 and 3 reveals the presence of permanent, membrane-bounded sacs just under the plasma membrane.
Further microscopic analysis of the contents in test tube 3 reveals the presence of one large nucleus and one small
nucleus in each organism. CORRECT ANSWER Paramecium
10. Which of the following statements about scientific models is false CORRECT ANSWER CORRECT
ANSWER they precisely predict what will happen given available information and reasonable as- sumptions
