If a cell begins to divide in an uncontrolled way, it ____

a. will always form a cancerous tumor
b. may form a benign tumor
c. is a sign of metastasis
d. is considered a malignant tumor

e. signals uncontrolled cell division in other parts of the body


b

Biology & Microbiology

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Which event can introduce a protein domain into a pre-existing protein?

a. gene alignment b. intron shuffling c. exon shuffling d. peptide shuffling e. exon splicing

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As oceans began to form on Earth billions of years ago, they were small, warm, and not very salty

Indicate whether the statement is true or false

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Although they lived at different times, all of the following people performed experiments related to how life originated. The strongest support for biogenesis came from 

A. Miller. B. Fox. C. Pasteur. D. Needham.

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During operant conditioning, an animal learns to

A) perform a behavior to receive a reward or avoid punishment. B) perform a response to a new stimulus. C) change an imprinted behavior. D) behave like a different animal. E) imprint upon an inappropriate object.

Biology & Microbiology