Which epidermal cell produces the pigments that lead to the coloration of the skin?

a. Collagen fibers
b. Keratinocytes
c. Melanocytes
d. Stratified squamous epithelium
e. Elastin fibers


c

Biology & Microbiology

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Let P = purple flowers and p = white, and T = tall plants and t = dwarf. If the upper case letters represent the dominant alleles, what is the phenotype of a plant with the genotype PpTt?  

A.  purple flowers, tall B.  purple flowers, dwarf C.  white flowers, tall D.  white flowers, dwarf E.  pale purple flowers, intermediate height

Biology & Microbiology

Members of which fungal phylum are the only ones to produce motile spores?

a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota

Biology & Microbiology

What is the correct order of stages for translation?

a. Termination - Elongation - Initiation b. Initiation - Elongation - Termination c. Elongation - Initiation - Termination d. Initiation - Replication - Termination e. Replication - Elongation - Initiation

Biology & Microbiology

A plant systematist aims to

a. identify and name plant species. b. classify plant species within larger groups. c. understand the evolutionary history and relationships of plant species. d. Identify and name plant species, and classify plant species within larger groups e. Identify and name plant species, classify plant species within larger groups and understand the evolutionary history and relationships of plant species.

Biology & Microbiology