The largest blood vessel in the human body is the

A) superior vena cava.
B) pulmonary vein.
C) aorta.
D) pulmonary artery.


Answer: C

Biology & Microbiology

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Which of the following statements about RNA polymerase in bacteria is INCORRECT?

A. It binds the promoter region of a gene. B. It is bound to a sigma factor during initiation of transcription. C. It synthesizes RNA. D. It catalyzes the addition of nucleotides to the 5? end of a growing RNA strand. E. It dissociates from the DNA at the terminator.

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The patterns by which muscles connect to bones are the same in all vertebrates

Indicate whether the statement is true or false.

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A pine tree is called a sporophyte because it

a. develops from a germinated spore. b. produces spores by meiosis. c. is haploid. d. undergoes fertilization. e. reproduces by both sexual and asexual means.

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Activation of B cells can occur when antigen binds to B cell surface immunoglobulin receptors.

Answer the following statement true (T) or false (F)

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