The force that pushes plant cell membranes tightly against the cell wall and helps support softer tissues against the
force of gravity is known as ____ pressure.
a. turgor
b. osmotic
c. diffusion
d. concentration
e. plasmolysis
ANSWER: a
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Tony sometimes seems very "wound up." At those times, he seems full of energy, talks very rapidly, and makes very grandiose plans. (One time, he gave away all of his belongings and was planning to move to Washington, D.C., so he could advise the President.) At these times, he also seems to need almost no sleep. During other periods of time Tony seems very "down." During these times he does not take care of himself. He seems to want to sleep all the time, and he often makes thinly veiled references to wanting to commit suicide.
a. Schizophrenia b. Major Depression c. Dissociative Identity d. Bipolar Disorder e. none of the above
Which of the following agents is a known cause of
mutations? a. nonionizing radiation b. ionizing radiation c. transposons d. chemicals in cigarette smoke e. all of these
What is the role of DNA in living things?
a. DNA stores the information required to make proteins. b. DNA produces food for cells. c. DNA produces energy for cells. d. DNA directs the production of proteins.
The ability to produce (hyaluronidase/lipase/proteases) enables Staphylococcus aureus to penetrate and spread through tissues.
Fill in the blank(s) with the appropriate word(s).