Antibody testing requires
A. only a known antigen.
B. only a known antibody.
C. both a known antigen and a known antibody.
D. either a known antigen or a known antibody.
Answer: D
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Among other functions, the ____ of a vascular plant performs most of the photosynthesis conducted by the plant
a. ground tissue b. protoderm c. vascular tissue d. meristem e. dermal tissue
A new hormone is discovered. Tests reveal that it is small, hydrophilic, and degraded by a protease. What type of hormone is it?
A. peptide B. amino acid derivative C. steroid D. glucocorticoid E. prostaglandin
In tomatoes, red (R) is dominant to yellow (r), tall (D) is dominant to dwarf (d), and smooth (H) is dominant to peach or hairy (h)
(a) How many different genotypes are there in relationship to these three characteristics? (b) How many different phenotypes are there in relationship to these three characteristics? (c) How many different homozygous pure-breeding forms can be produced? What will be an ideal response?
What may result if a mutation occurs in a gene?
A) There may be no effect on the protein encoded by the gene. B) A nonfunctional protein may be created. C) A protein with a new function will not be formed. D) The phenotype of the organism may be changed.