An immune complex resulting from an interaction of antibody with cells or particles which becomes large enough to settle out of solution is called a(n)
A. ouchterlony double diffusion.
B. hemagglutination.
C. precipitation reaction.
D. agglutination reaction.
Answer: C
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There are 20 different amino acids. What makes one amino acid different from another?
A) different side chains (R-groups) attached to a carboxyl carbon B) different side chains (R-groups) attached to the amino groups C) different side chains (R-groups) attached to an ? carbon D) different structural and optical isomers E) different asymmetric carbons
Carolus Linnaeus developed a classification system for organisms based on their DNA sequences
Indicate whether the statement is true or false.
Which statement correctly describes human chromosomes?
a. The haploid number is 22 b. Human gametes end up with two of each type of 23 chromosomes. c. There are 42 pairs of chromosomes. d. The diploid number is 46. e. Human gametes end up with one of each type of 22 chromosomes.
Which of the following STIs is caused by a virus that can also cause cancer?
A) genital warts B) gonorrhea C) candidiasis