The coiling and folding of a polypeptide chain into a more circular molecule is the ________ structure of a protein.
A. primary
B. secondary
C. tertiary
D. quaternary
Answer: C
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Describe the differences between positive and negative feedback systems
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Which statement is true regarding cerebrospinal fluid?
A) CSF is identical in composition to blood plasma. B) CSF is made during fetal development and does not change through the lifetime of the person. C) There is about a liter of CSF within the brain and spinal cord. D) If CSF is not properly resorbed, the result would be hydrocephalus. E) CSF moves back into the blood supply by the process of osmosis.
The stretch of a full urinary bladder is detected by a(n):
A) exteroceptor. B) photoreceptor. C) thermoreceptor. D) interoceptor.
The production of milk is called
A) letdown. B) lactation. C) menstruation. D) colostrum. E) secretion.