What are epithelial cells with a flat, irregular shape and tapered edges called?
A. cuboidal
B. pseudostratified
C. stratified
D. squamous
E. columnar
Answer: D
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To experimentally determine the function of an annotated gene, a researcher may _____
a. look for similar gene sequences of known function b. examine the putative protein structure c. perform a gene knockout d. find a pseudogene for the gene e. determine the amino acid sequence
Beginning with the heart, which is the correct order of blood flow, as represented by steps 1-5 in the flow chart below?
a. capillaries, venules, veins, arteries, arterioles b. arterioles, arteries, venules, veins, capillaries c. arteries, arterioles, capillaries, venules, veins d. veins, venules, capillaries, arterioles, arteries e. arteries, veins, arterioles, capillaries, venules
The approximate age of the Earth is:
a. 100,000 years. b. 1.2 billion years. c. 4.6 billion years. d. 10.5 billion years. e. 13.6 billion years.
Breeding a yellow dog with a brown dog produced puppies with both yellow and brown hairs intermixed. This is an
example of: a. variegation. b. codominance. c. incomplete dominance. d. epistasis. e. a polygenic trait.