When an electron absorbs energy, it moves to a ________, and when it releases that energy, it ________
a. lower orbital / returns to its original position
b. none of the choices
c. higher orbital / returns to its original position
d. higher orbital / emits radioactivity
c
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Chromatin consists of ____
a. only DNA b. DNA and RNA c. RNA only d. DNA and associated proteins e. proteins only in the nucleus
Recall that your text states the following energy analogies:
a. ATP is compared to a few coins in your pocket. b. Creatine phosphate is compared to a handful of dollars. c. The glycolytic system is like an account in the bank. d. The oxidative energy system is compared to stocks and bonds.In your own words explain why each is a valid comparison.
Which organ system is the principle regulatory system of the body, functioning to monitor and respond to changes in the environment?
1.A
2.B
3.C
4.D
Sheree observed an amoeba feeding by engulfing the prey with its false feet or pseudopods. This process is known as
A. pinocytosis. B. exocytosis. C. facilitated transport. D. phagocytosis. E. osmosis.