What is a Dane particle?
A) the chlorine-resistant virus that causes HAV
B) the infectious virion that causes HBV
C) the spherical particles found in serum of patients with HBV
D) the filamentous particles that cause HAV
E) another name for an HBV surface antigen
B
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Receptors for ________ hormones are located on the plasma membrane and affect target cells by _________
A. amine; activating protein kinase enzymes B. steroid; activating protein kinase enzymes C. peptide; forming hormone-receptor complexes that activate or inhibit gene expression D. steroid; forming hormone-receptor complexes that activate or inhibit gene expression E. amine; forming hormone-receptor complexes that activate or inhibit gene expression
Asexual reproduction results in greater reproductive success than does sexual reproduction when _____
A) pathogens are rapidly diversifying B) there is some potential for rapid overpopulation C) a species is expanding into diverse geographic settings D) a species is in stable and favorable environments
Some cells may contain multiple genomes
Indicate whether the statement is true or false
Although developed over 100 years ago, Koch's postulates continue to be used successfully in all known human infectious diseases.
Answer the following statement true (T) or false (F)