Apoptosis:
a. decreases the number of cells in the body
b. is programmed cell death
c. is a natural process
d. All of these are correct.
d. All of these are correct.
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Species of Shewanella, Geobacter, and some cyanobacteria have evolved a strategy to enable their use of insoluble compounds as electron acceptors: the production of electrically conductive ________ that transfer electrons from the terminal point in the ETC to a metal surface.
What will be an ideal response?
Which of the following is true of an asymmetric carbon atom?
A) Only amino acids have asymmetric carbon atoms. B) A carbon with hydrogens attached at two locations is usually asymmetric. C) Methane has an asymmetric carbon. D) Asymmetric carbon atoms create stereoisomers. E) Molecules may have only one asymmetric carbon atom.
The relative impermeability of membranes to water soluble molecules is a result of the ____
a. nonpolar nature of water b. presence of large proteins that extend through both sides of membranes c. presence of inorganic salt crystals scattered through some membranes d. presence of cellulose and waxes e. presence of phospholipids in the lipid bilayer
A substance with a pH of 6 is called
a) an acid b) a base c) both an acid and a base d) neither and acid nor a base