Gas exchange in terrestrial insects is accomplished through:a
the use of gills.
b. the use of tracheae.
c. the use of book lungs.
d. a closed circulatory system.
e. diffusion across the epidermal layer.
b
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Which of the following is not an accessory pigment used to absorb photons that cannot be captured by chlorophyll?
A) beta-carotene B) a phycobilin C) lutein D) phycochlorophyll E) phycocyanin
What is incorrect about the ostrich?
a. It weighs over 300 pounds. b. It is featherless. c. It is flightless. d. It has a four-chambered heart. e. It is a runner.
A tall plant is crossed with a short plant, and the progeny are all intermediate in size between the two parental plantsIf the intermediate F1 progeny were allowed to self-pollinate, and the F2 progeny were also intermediate in size, but following a normal distribution, this would suggest
A) incomplete dominance. B) polygenic inheritance. C) complete dominance. D) a strong environmental influence. E) codominance..
Suppose the template DNA strand of a "mini-gene" has the base sequence TACCCGGATTCA. The anticodon of the tRNA that carries the first amino acid to the ribosome will be
A) AGU. B) UAG. C) AUG. D) UCA. E) UAC.