If we find an orange plant that lacks chlorophyll living on a green plant, it is likely that the orange plant is a:
A) predator. B) commensal. C) parasite. D) host.
Answer: C
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Adipose cells secrete __________, a(n) __________
that acts on the __________ to help control appetite. a. ghrelin; enzyme; stomach b. leptin; enzyme; brain c. leptin; hormone; brain d. ghrelin; hormone; stomach e. ghrelin; hormone; brain
Bioremediation of uranium depends on metal-reducing bacteria to change the oxidation state of the uranium to form insoluble uranium compounds
Indicate whether the statement is true or false.
The enzyme responsible for proofreading a growing DNA strand and for replacing mismatched nucleotides is
A. DNA polymerase. B. helicase. C. topoisomerase II. D. DNA ligase. E. DNA replicase.
What accounts for the lysis of a bacterial cell in the presence of a membrane attack complex?
A. loss of cytoplasm due to the presence of large channels in the membrane B. unregulated signaling due to the addition of novel proteins to the cell's membrane C. increased osmosis leading to swelling and rupture of the cell D. apoptosis due to the loss of DNA