Which of the following statements is incorrect about hepatitis A?

A. Havrix is an inactivated vaccine for prevention.
B. An infection predisposes a person for liver cancer.
C. Immune globulin therapy helps decrease the severity.
D. It is transmitted by the oral-fecal route.
E. The virus produces flu-like symptoms with discomfort near the liver and darkened urine.


Answer: B

Biology & Microbiology

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Consider the cladogram shown. Based on this cladogram, which species has the greatest number of ancestral character states?  



A.  1
B.  2
C.  3
D.  4
E.  5

Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
 
Gather Content
· What do you already know about cladistics?
 
Consider Possibilities
· What other information is related to the question? Which information is most useful?
 
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
  Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Restriction endonucleases break ____ bonds

a. phosphodiester b. ester c. glycosidic d. peptide e. hydrogen

Biology & Microbiology

Most plant cells are pluripotent, meaning that they

a. constantly switch tissue types throughout their lives. b. cannot change after differentiating into a specific cell type. c. end up as a hybrid of tissue types. d. can function in any environmental condition. e. retain the ability to change cell types when necessary.

Biology & Microbiology

The cellular branch of adaptive immunity

A) is organized by T cytotoxic cells and carried out by T helper cells. B) does not involve a memory function. C) is based on antibody production. D) is organized by T helper cells and carried out by T cytotoxic cells. E) is based on the activity of both T and B cells.

Biology & Microbiology