Which of the following is the only DNA virus known to can cause viral hepatitis?
A. hepatitis A virus
B. hepatitis B virus
C. hepatitis C virus
D. hepatitis D virus
E. hepatitis E virus
Answer: B
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Compare and contrast the leading causes of death in 1900 with the leading causes of death today. What roles have microbiologists played in the dramatic changes that are evident?
What will be an ideal response?
The process of relaying a growth-stimulatory or growth-inhibitory signal in response to an extracellular factor binding at the cell surface is called intercellular signaling
Indicate whether the statement is true or false
What is the fundamental structural unit of life on Earth?
What will be an ideal response?
Red-green color blindness is inherited as a sex-linked recessive trait. The gene is found on the X chromosome. Can a man with normal color vision father a daughter who is red-green color-blind?
A) Yes, if the woman with whom he mates is red-green color-blind. B) Yes, if the man is heterozygous for red-green color blindness. C) No, he can't (unless there is a mutation). D) No, the expression of the trait skips a generation.