Which of the following statements is TRUE of the ligands of nuclear receptors?
a) They are usually large peptides
b) They directly activate transcription factors.
c) They prevent receptors from entering the nucleus
d) They are blocked by the cell membrane
Answer: b) They directly activate transcription factors.
You might also like to view...
If a trait is inherited in an autosomal recessive fashion, which of the following is not true?
A. Both sexes are equally affected. B. The trait will not occur in offspring if one of the parents is homozygous dominant. C. About one-fourth of the offspring of two heterozygotes will be affected. D. The trait often appears in the progeny of unaffected parents. E. Two affected individuals can have an unaffected child.
White blood cells play a particularly important role in ________
A) fighting infections B) supporting the activity of red blood cells C) carrying carbon dioxide D) blood clotting
What is an anticodon?
A) Three consecutive bases in mRNA B) Four consecutive bases in tRNA C) The beginning of a DNA molecule D) Three consecutive bases in tRNA E) Three consecutive amino acids in a protein
A denatured protein differs from a normal protein because it
A) has lost its usual secondary and tertiary structures. B) is composed of nucleotides. C) contains many disulfide bonds. D) does not contain amino acids.