What do satiety signals depend on?
What will be an ideal response?
Both the volume and nutritive density of the food
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Antibody-mediated immune responses produced by specific proteins are generated by:
a. lymphocytes of the T class. b. lymphocytes of the B class. c. neutrophils. d. basophils.
The defining characteristic of a stem cell is
A) self-repair. B) self-renewal. C) the ability to turn into a cancer cell. D) its origin from a progenitor cell.
There is a color pattern inherited in certain mice in which agouti (gray) is homozygous, and yellow is
heterozygous. A cross of two yellows produces two yellows for each agouti. A second gene, C/c, controls the expression of the color genes: C is the dominant allele that allows color to be expressed, and the recessive gene in the homozygous condition (cc) prevents any color from being expressed. (a) Give the genotypes of a white parent crossed with a yellow parent that produces 1/2 white, 1/3 yellow, 1/6 agouti offspring. (b) Give the results of the cross of two forms heterozygous for each gene. (c) Can you develop a pure-breed population for any of the colors? What will be an ideal response?
Which mechanism is NOT used by ncRNAs to bind to other molecules?
A. Complementary base-pairing between the ncRNA and RNA B. Complementary base-pairing between the ncRNA and DNA. C. A stem loop structure in the ncRNA binds to a specific protein structure. D. A stem loop structure in the ncRNA binds to a specific DNA sequence. E. Several stem loop structures form a shape that binds to a small molecule.