Recent discoveries of microscopic fossils have extended the known history of life to about:

A. 1 billion years ago.
B. 4.5 billion years ago.
C. 3.5 billion years ago.
D. 2 billion years ago.


Answer: C

Biology & Microbiology

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Which of the following lists gives the cellular processes for limb formation in correct order from first to last?

A. cell division, cell migration, cell differentiation, cell death B. cell migration, cell differentiation, cell division, cell death C. cell migration, cell division, cell differentiation, cell death D. cell division, cell differentiation, cell migration, cell death E. cell differentiation, cell migration, cell division, cell death

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A mutation of an autosomal recessive trait can remain undetected for generations

a. True b. False Indicate whether the statement is true or false

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A number of ____________ cover the rough ER. Fill in the blank(s) with the appropriate word(s)

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An example of an irreversible inhibitor is

A) a competitive inhibitor. B) angiotensin converting enzyme (ACE) inhibiting drugs. C) a noncompetitive inhibitor. D) penicillin. E) isoleucine.

Biology & Microbiology