The human brain contains at least ____ neurons
a. 100 billion
b. 100 million
c. 500 million
d. 100 thousand
e. 50 million
A
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A point mutation that causes no change in the amino acid sequence of a protein is called a _____
A. synonymous (silent) mutation B. nonsynonymous (missense) mutation C. nonsense mutation D. stop mutation E. transition mutation
Which one of the following controls drives, instincts, and emotion?
A. thalamus B. cerebrum C. limbic system D. cerebellum
The tertiary structure of a protein is ____
a. the amino acid sequence in a polypeptide chain b. generated by the formation of bonds between amino acids c. formed by a protein region folding on itself d. formed by the interaction of two or more polypeptide chain e. generated by bonding and folding of ribosomes attached to the endoplasmic reticulum
The image below represents the termites, bacteria, and protists that together share a mutualistic relationship.
a. one
b. two
c. three
d. four