List the components of a nucleosome
What will be an ideal response?
Histones H2A, H2B, H3, and H4 exist as two types of tetramers: (H2A)2 + (H2B)2 and (H3)2 + (H4)2.
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In Alzheimer’s disease , neurons that secrete which neurotransmitter are particularly affected?
a. epinephrine b. dopamine c. serotonin d. acetylcholine e. GABA
Passage of animal cells through the cell cycle is regulated primarily by
a. the availability of nutrients. b. intracellular second messengers. c. extracellular growth factors. d. direct cell surface interactions.
The second study by Gusella demonstrated four haplotypes for HD based on the restriction enzyme HindIII. Which haplotype demonstrated linkage to the disease phenotype?
A) A B) B C) C D) D
If a T cell is exposed to a "hidden" antigen, what kind of immune reaction will result?
A. an autoimmune disease B. a delayed hypersensitivity reaction C. a cytotoxic hypersensitivity reaction D. allergic contact dermatitis E. an allergy