The special functions performed by membranes are the result of

a. the number of layers of phospholipids present.
b. concentration gradients of the interior contents.
c. lipids embedded in the protein layer.
d. steroids.
e. proteins in the lipid bilayer.


E

Biology & Microbiology

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) ________ are a class of enzymes responsible for the movement of functional groups from one molecule to another.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Most of the ATP produced during cell respiration is produced during the citric acid cycle

Indicate whether the statement is true or false

Biology & Microbiology

Due to nuclear equivalence in different cell types, the presence of different cell types in any given organism is

accomplished by: a. differential gene expression. b. pattern formation. c. cloning. d. induction. e. nuclear transplantation

Biology & Microbiology

An ion with six protons, seven neutrons, and a charge of 2+ has an atomic number of ________.

A) four B) five C) six D) seven

Biology & Microbiology