Assume short hair (L) is dominant to long hair (l), and black hair (B) is dominant to brown (b). If you
found a black, short-haired animal, you could determine its genotype by crossing it to an animal with a
genotype of
a. LL BB.
b. ll BB.
c. ll Bb.
d. ll bb.
e. LL bb.
D
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What phenomenon accounts for the appearance of chloroplasts in some unicellular phototrophic eukaryotes?
A) endosymbiosis B) secondary endosymbiosis C) sequencing of chloroplasts' SSU genes D) horizontal gene transfer
Monosaccharides and amino acids enter brush border cells by ________
a. active transport b. simple diffusion c. facilitated diffusion through hydrophilic membrane tunnels d. emulsification by bile and diffusion across the plasma membrane
What respiratory adaptation was important for the invasion of land by arthropods?
A. positive pressure breathing to increase gas exchange B. cutaneous respiration in moist habitats C. gas- and water-permeable exoskeletons D. the ability to close spiracles to prevent water loss E. countercurrent exchange surrounding the trachea
What tissue type makes up the outer layer of
the skin?
a. simple squamous b. simple cuboidal c. stratified columnar d. simple columnar e. stratified squamous