A zygote is a(n) ____
a. diploid cell
b. haploid cell
c. gamete
d. female gonad
e. male gonad
a
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According to Fig 9.10, which of the following is NOT responsible for amplifying the signal in a cell responding to adrenaline signaling?
A. the binding of the receptor by adrenaline B. the production of cAMP by adenylyl cyclase C. the activation of protein kinase A by cAMP D. the phosphorylation of proteins by protein kinase A E. All of these choices amplify the adrenaline signal.
Which human protein do human skin fungal
pathogens typically digest?
a. collagen b. elastin c. myosin d. keratin e. pepsin
Evolution is
a. the survival of populations. b. the process that results in changes in the genetic makeup of a population over time. c. a group of individuals of the same species occupying a given area. d. change in an individual's genetic makeup over its lifetime.
Which scientists are credited for deducing the true structure of DNA?
A. Rosalind Franklin B. Erwin Chargaff and Oswald Avery C. Martha Chase and Frederick Griffith D. James Watson and Francis Crick