Which of the following statements about keratin is false?
a. It is a protein molecule.
b. It is manufactured by epidermal cells.
c. It gives strength to the skin.
d. It acts as an evaporative barrier to prevent excess water loss.
e. It facilitates diffusion across the body surface.
E
You might also like to view...
HIS4 trp1; HIS4 trp1; his4 TRP1; his4 TRP1
A haploid yeast strain has mating type a and genotype his4 TRP1. A different haploid yeast strain has mating type ? and genotype HIS4 trp1. The two strains mate and produce diploid offspring with genotype his4 TRP1 / HIS4 trp1. The diploid cells undergo meiosis to produce a variety of tetrad types. In the following questions, the genotypes of the spores in a tetrad are shown. For each tetrad, tell what type it is: parental (PD), non-parental (NPD), or tetratype (T). A) PD B) NPD C) T D) cannot be determined
Altruism in animals
a. lowers their chances of perpetuating their own genes. b. has no genetic basis. c. is a conscious effort to preserve the species. d. is just lucky behavior. e. includes none of these
Which of the following DNA sequences would most likely be recognized by a restriction enzyme? (Note: Only the coding strand is shown.)
A: AGTCGA B: GTCTGA C: TAAGGT D: TCGTGGA E: TAGCTA
Which type of leishmaniasis is an important opportunistic infection associated with HIV?
a) Cutaneous b) Mucocutaneous c) Visceral d) Systemic