Anti-human antibodies (specific for human IgG antibodies) with fluorescent molecules covalently attached are used for
A. direct fluorescent antibody tests.
B. indirect fluorescent antibody tests.
C. direct ELISAs.
D. indirect ELISAs.
E. immunodiffusion tests.
Answer: B
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Which one of the following is TRUE regarding metabolism?
A) Metabolism involves about 200 different chemical reactions occurring in a living organism. B) An anabolic reaction is one in which a large molecule is broken down into smaller molecules. C) Linear metabolic pathways occur when the product of one reaction is used as the substrate of the previous reaction. D) Catabolic pathways result in the release of energy. E) Anabolic reactions generate molecules with decreased energy content.
When r = 0.00001, the population size:a
will increase. b. will decrease. c. is stable. d. may increase or decrease, depending on K. e. may increase or decrease, depending on i.
What is the function of the synaptonemal complex presently thought to be?
a) it prevents the breakage of the DNA double helix at the wrong place b) it serves to initiate genetic recombination c) it assures that the DNA double helix breaks at exactly the right place d) it functions primarily as a scaffold to allow interacting chromatids to complete crossover activities e) it maintains RNA in association with the chromosomes
Amphistegina gibbosa is a species of protist with filose pseudopodia found near coral reefs. What cannot be true of A. gibbosa?
A. They are enclosed within a shell composed of calcium carbonate. B. They have sacs under the cell membrane. C. They can be useful in studying global warming. D. They are heterotrophic. E. They are closely related to radiolarians.