Which group of organisms is able to regulate their internal temperature through a metabolic process?
a. Crocodilians
b. Mammals
c. Tuataras
d. Lizards
e. Turtles
b
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Ammonia is likely to be the primary nitrogenous waste in living conditions that include _____
A) lots of fresh water flowing across the gills of a fish B) lots of seawater, such as a bird living in a marine environment C) lots of seawater, such as a marine mammal (for example, a polar bear) D) a terrestrial environment, such as that supporting crickets E) a moist system of burrows, such as those of naked mole rats
Koch's postulates include all the following except:a
when a sample of a pure culture is injected into a healthy host, it causes the same disease. b. a sample of the microorganism from a diseased host can be grown in pure culture. c. the microorganism can be recovered from an experimentally infected host. d. the microorganism must be visible in the electron microscope. e. the pathogen must be present in every individual with the disease.
The APC/C polyubiquinates the protein securin in order to stitch epithelial cells together.
a. true b. false
A scientist conducts experiments to test a(n) (observation/hypothesis/theory).
Fill in the blank(s) with the appropriate word(s).