All of the following were produced in experiments on primitive Earth conditions conducted by Miller-Urey and others, except for
A. amino acids.
B. organic molecules.
C. prokaryotes.
D. hydrogen cyanide.
E. urea.
C. prokaryotes.
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“Complement” refers to a set of specific
a. vaccines. b. defense proteins. c. antibodies. d. antibiotics. e. lymphocytes.
There are how many different kinds of amino acids in proteins?
a. 3 b. 6 c. 12 d. 20 e. 28
Match the following lymphatic organs to the proper function
A) Red bone marrow 1) site of T cell maturation B) Lymph nodes 2) help prevent the entrance of pathogens through the nose and mouth. C) Thymus 3) cleanse the blood and storage of lymphocytes D) Spleen 4) cleanse the lymph and alert the immune system to pathogens E) Tonsils 5) site of blood cell production
The assay shown in Figure 17.1 is used for what?
A. detecting antibodies against a complex mix of antigens B. verifying infection with a virus C. determining the concentration of antibodies D. detecting neutralizing antibodies E. blood typing