Host ________ is the process by which some cells are capable of degrading an exogenote.
Fill in the blank(s) with the appropriate word(s).
restriction
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Production of a neurotoxin that binds to target sites on spinal cord neurons responsible for inhibiting skeletal muscle contraction is a characteristic of ________.
A. Clostridium tetani B. Clostridium difficile C. Clostridium perfringens D. Clostridium botulinum
Which of the following factors influence the
opening and closing of the stomata? a. rate of photosynthesis b. water availability c. concentration of carbon dioxide in the leaf d. light intensity e. all of these
One of the reasons that most animal cells will not burst if too much water enters by osmosis is that
a. the cell wall will protect it. b. most body cells selectively move solutes out. c. carrier proteins will remove excess water. d. solute molecules will resist water molecules. e. salts will absorb the water.
Each water molecule is joined to _____ other water molecules by ______________ bonds.
a) two ... polar covalent b) four ... hydrogen c) three ... ionic d) four ... polar covalent e) two ... hydrogen