Hepatitis B virus
A) Is principally transmitted by blood
B) Transmission risks include shared needles, anal intercourse, and heterosexual intercourse.
C) Is transmitted to the newborn from chronic carrier mothers.
D) Has many chronic carriers
E) All these choices are correct
E) All these choices are correct
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The ____ is a protective structure where sperm cells are formed in bryophytes and some other plants
a. antheridium b. stoma c. strobilus d. sporangium e. archegonium
The ____________________ are blood pressure receptors located in the carotid arteries. Fill in the blank(s) with the appropriate word(s)
Which of the following best describes the relationship between an antibody and an antigen?
a. An antibody is one response to an antigen. b. An antibody is produced by T cells and an antigen is a foreign protein. c. An antigen is presented by antigen presenting cells to plasma cells, which produce antibodies. d. An antigen is a disease-causing organism, and antibodies are produced by B cells. e. An antibody induces antigen formation.
Whole genome or shotgun sequencing requires
A) the creation of a cDNA library. B) the creation of overlapping DNA fragments whose sequences can be aligned into large contiguous fragments (contigs) using computer algorithms. C) large contiguous fragments (contigs) cloned into yeast artificial chromosomes (YACs) in an ordered fashion. D) very large amounts of DNA from the organism whose genome is being sequenced. E) the use of a gene gun to propel DNA-coated particles at high velocities into cells.