The most common form of color blindness is related to a recessive mutation on the X chromosome and is more common in ________; as a result, a pigment normally found in ________ is missing.
A. men; rods
B. men; cones
C. women; rods
D. women; cones
Answer: B
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How are endocrine glands and hormones involved in homeostatic reflexes?
A. Endocrine glands can be efferent pathways, and hormones can be effectors. B. They are not involved; reflexes only involve actions of the nervous system. C. Endocrine glands can be receptors, and hormones can be effectors. D. Endocrine glands can be integrating centers, and hormones can be efferent pathways. E. Endocrine glands are not part of reflex mechanisms, but hormones can be afferent or efferent pathways.
Molarity is measured in the units of moles solute/L solution.
Indicate whether this statement is true or false.
Which cells display CD4 proteins and interact with MHC Class II antigens?
a) Cytotoxic T cells b) Helper T Cells c) Memory T Cells d) MHC antigens e) B cells
Ejaculation is a two-part reflex involving (1) contraction of the smooth muscle of the reproductive tract and accessory sex organs (emission), and (2) contraction of the skeletal muscles at the base of the penis (expulsion)
Indicate whether the statement is true or false