What is the role of the epithelium?
A. Transmits electrical signals throughout the body
B. Helps protect the body from the external environment
C. Provides the padding between the joints
D. Contracts to create body movement
Answer: B
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Genes live at specific locations along a chromosome called a _______.
a. habitat b. locus c. niche d. genetic zone
A ____ mechanism controls body temperature in the human body by reversing the body's attempt to generate heat
when body temperature rises.
a. positive feedback b. inhibition c. negative feedback d. cyclical feedback e. none of these
The simplest measure of community structure is a count of the number of species present and is referred to as species ________
Fill in the blank(s) with correct word
A mutation in a fly causes an antenna to develop where a leg should be. This is an example of a ________ mutation
Fill in the blank(s) with correct word