Due to a mutation in the HEXA gene, a substance called GM2, normally present in the tissues and nerve cells of the brain, accumulates there. This mutation mainly effects enzymes associated with which organelle in an affected individuals' cells?
a. nucleus
b. endoplasmic reticulum
c. plasma membrane
d. lysosomes
Answer: d. lysosomes
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A female horse can mate with a male donkey
but they will produce a mule that is sterile. This is an example of what type of isolation mechanism?
a. allopatric b. ecological c. behavioral d. mechanical e. temporal
When a physical barrier separates a population, leading to the evolution of new species on either side of the barrier,
____ has occurred.
a. sympatric speciation b. allopatric speciation c. directional selection d. ecological isolation e. behavioral isolation
The method of reasoning that uses construction of general principles by careful examination of many specific cases is called:
A. experimental reasoning. B. theoretical reasoning. C. inductive reasoning. D. hypothetical reasoning. E. deductive reasoning.
The type of immunity that results from the the production of antibodies by an individual following an infection or vaccination is ______ immunity.
Fill in the blank(s) with the appropriate word(s)