The chief scientist on the HMS Challenger expedition was:

a. Charles Darwin.
b. Victor Hensen.
c. Alexander Aggasiz.
d. Charles Wyville Thomas.
e. Edward Forbes.


D

Biology & Microbiology

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Which of the following can help researchers determine if two genes are homologous to each other?

A. Punnet square B. simple dot matrix C. quadratic equation D. polypeptide structure E. geometric analysis

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An enzyme lowers activation energy by ____

a. keeping substrates apart b. orienting substrates randomly

c. breaking the laws of thermodynamics d. shutting out water molecules e. physically breaking chemical bonds

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Briefly define transformation and describe the relationship between the phenomenon of transformation and the discovery that DNA is the genetic material in bacteria

What will be an ideal response?

Biology & Microbiology

When you scratch a mosquito bite, you damage some cells. Damaged cells release histamine, which causes localized swelling that can crush additional cells, causing the release of more histamine. This is an example of

A) positive feedback. B) negative feedback. C) neurotransmitter activity. D) paracrine communication. E) synaptic communication.

Biology & Microbiology