A vein always carries:a
blood to the heart.
b. blood from the heart.
c. oxygen-rich blood.
d. oxygen-poor blood.
e. blood rich in carbon dioxide.
A
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A researcher isolates a species of fungus that only reproduces sexually. He introduces individual fungi—all of the same mating type (e.g., with the same mating type alleles)—into a petri dish. What do you expect will happen with the fungi in this dish?
A. Fungi in the dish will mate, forming spores via sexual reproduction. B. Fungi in the dish will not mate, but will from spores via asexual reproduction. C. No spores will be formed by fungi in the petri dish.
Which of the following is an example of the use of the binomial system devised by Linnaeus?
A. O157:H7 B. Escherichia coli C. Enterobacteriaceae D. Enterobacteriales
You have conducted an Ames test on a given compound. Which of the following would be classified as a positive result on the Ames test?
A) his – strain grows on an his – plate. B) his – strain grows on an his+ plate. C) his+ strain grows on an his – plate. D) his+ strain grows on an his+ plate. E) his+ strain grows on either an his – or an his+ plate.
Cereal grains come from which types of plants?
A) dicots B) monocots C) legumes D) tubers