A motor unit is _____
a. a muscle and the bone it moves
b. two muscles that work in opposition
c. the amount a muscle shortens during contraction
d. a motor neuron and the muscle fibers it controls
D
You might also like to view...
Jacob and Monod were intellectually primed to draw the conclusions they did concerning regulation of the lac operon. In part, this was due to their fascination with mechanisms of enzyme regulation. They knew that the activity of some enzymes is regulated
when their reaction product binds to the enzyme, changing its shape and, therefore, its activity. This knowledge allowed them to easily make the intellectual leap to propose _____. A) the existence of the CAP binding site B) allosteric regulation of the repressor C) positive regulation of the lac operon D) the existence of the operator E) co-transcribed and co-regulated genes of bacterial operons
Recent research has shown that myostatin can negatively regulate cardiac muscle growth
Indicate whether the statement is true or false.
What is the maximum number of hydrogen atoms that can be covalently bonded in a molecule containing two carbon atoms?
A) 2 B) 4 C) 6 D) 8
A molecule that undergoes reduction
a) becomes phosphorylated. b) loses a hydrogen atom. c) gains one or more electrons. d) loses one or more electrons.