A single, weak contraction of a muscle fiber is called

a. an action potential.
b. a muscle twitch.
c. fatigue.
d. tetanus.
e. constriction.


B

Biology & Microbiology

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You have identified an enzyme that appears to be involved in the addition of palmityl group (a fatty acid) to certain proteins. Knowing that palmitoylated proteins are usually targeted for delivery to the plasma membrane, in which organelles might this enzyme be expressed?

A. Golgi apparatus and nucleus B. Golgi apparatus and endoplamic reticulum C. Endoplamic reticulum and ribosomes D. Endoplamic reticulum and nucleus

Biology & Microbiology

What is one characteristic of a homeodomain?

A. It is a transmembrane protein B. It can bind to the minor groove of DNA C. It is a protein domain encoded by a homeobox D. It binds to DNA at random sequences.

Biology & Microbiology

Some tropical rain forests are the source of a plant that proved to be useful in fighting:

a. malaria b. influenza c. HIV d. heart disease e. cancer

Biology & Microbiology

Wood suggests that the strong, unpleasant feelings of your hunger are:

What will be an ideal response?

Biology & Microbiology