The three components of the female reproductive system that are required for successful reproduction are the eggs,
____________________, and ____________________. Fill in the blank(s) with the appropriate word(s).
oviduct; uterus
uterus; oviduct
fallopian tubes; uterus
uterus; fallopian tubes
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A cytotoxic T lymphocyte, having been activated against a particular viral antigen, "sees" this same antigen displayed on the surface of a host cell. What will happen?
A. The cytotoxic body cell will activate B cells which then produce antibody against the antigen. B. The cytotoxic T cell will produce proteins that cause the host body cell to die. C. The cytotoxic T cell will produce antibodies against the antigen. D. The antigen will move inside of the host body cell, thereby hiding from the cytotoxic T cell.
Which of the following statements is false about
amphibians? a. There are currently about 5,500 known species. b. Many species are declining in abundance. c. Several species of frogs and salamanders are now listed as threatened or endangered. d. Chemical pollution of aquatic habitats is not a contributing factor to their current problems. e. Mark Twain’s “celebrated jumping frog” is at risk.
When atoms react to form an ionic bond, electrons are shared between those atoms
__________________ Indicate whether the statement is true or false.
Two populations that inhabit the same area but remain genetically distinct can best be called
A. species. B. sympatric species. C. allopatric species. D. subspecies (races). E. polymorphic.