IgG, IgM, and IgA are examples of ________ found in blood
A) antibodies
B) antigens
C) bacteria
D) pathogens
Answer: A
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The tertiary structure of a protein is the _____
A) bonding together of several polypeptide chains by weak bonds B) order in which amino acids are joined in a polypeptide chain C) unique three-dimensional shape of the fully folded polypeptide D) organization of a polypeptide chain into an ?-helix or ?-pleated sheet E) overall protein structure resulting from the aggregation of two or more polypeptide subunits
Which one of the following scientists tested the hypothesis that microorganisms can arise by spontaneous generation?
A. Elena and Lenski B. Redi C. Pasteur D. Darwin E. Alvarez
How does the metabolism occurring in chloroplasts differ from that of mitochondria?
A. Different proton sources B. Different electron sources C. Different electron acceptors D. Different electron acceptors and sources E. None of these answer options is correct.
What is the steep and sudden decline in a population size as birth rates plummet and death rates soar?
A) carrying capacity B) a "boom and bust" cycle C) demographic momentum D) a population crash