All of these are similarities between the male and female system EXCEPT one. Choose the exception
A) Both have erectile tissue that becomes engorged with blood during sexual excitement.
B) Both have paired gamete-producing organs.
C) Both have a urethra that carries both urine and gametes.
D) Both have a pair of tubes that can carry gametes.
C
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A pharmaceutical company is researching potential drugs that would allow patients to grow stronger nails and hair. The company is considering the purchase of a patent for a molecule that has been shown to significantly accelerate the growth of microtubules in eukaryotic cells and has hired you as a consultant before patent negotiations have begun. What advice should you give?
a. The company should not purchase this patent because the rate at which microtubules grow is inversely proportional to their overall strength. b. The company should not purchase this patent because it is extraordinarily unlikely that the results will transfer to prokaryotic cells. c. The company should not purchase this patent because keratin fibers are not microtubules but rather intermediate filaments. d. The company should purchase this patent because microtubule growth is the largest inhibiting factor for nail and hair strength.
Of all the different codons that exist, three of them
a. are involved in mutations. b. do not specify a particular amino acid. c. cannot be copied. d. do not specify a particular amino acid and are signals to begin translation. e. do not specify a particular amino acid and are signals to terminate translation.
Which of the following structures function(s) to bend light rays?
A. iris and vitreous humor B. ciliary body C. choroid D. rods and cones E. lens and cornea
You go to the movies with a friend, and he refuses to share your popcorn. He says that he heard that movie theatre popcorn is triploid. What is the most likely explanation for this?
A. All popcorn is triploid, because the starchy part of the kernel is triploid endosperm tissue. B. The buttery topping on movie theatre popcorn causes chromosomal abnormalities. C. Most corn is genetically modified by large agricultural companies. D. Popcorn is made from a different species of maize than regular corn.