Essentially all exchange of gases and other materials between the circulatory system and tissues of the body or the outside world (e.g., in the lungs) occurs in the

A. veins.
B. capillaries.
C. arteries.
D. heart.
E. lymphatic system.


Answer: B

Biology & Microbiology

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In the early twentieth century, ____ discovered that genes are carried on chromosomes

a. Thomas Hunt Morgan b. Francis Crick c. Gregor Mendel d. James Watson e. Thomas Huxley

Biology & Microbiology

Small circular molecules of DNA in bacteria are called

a. plasmids. b. desmids. c. pili. d. F particles. e. transferrins.

Biology & Microbiology

In pine, there is a dominant ____ generation. 

A. sporophyte B. gametophyte C. male gametophyte D. female gametophyte

Biology & Microbiology

Because of the existence of (acute/asymptomatic/passive) carriers, the eradication of meningococcal disease is unlikely

What will be an ideal response?

Biology & Microbiology