Chemical reactions that lead to a release of free energy are referred to as "energetically favorable." Another way to describe these reactions is: _____________

(a) uphill.
(b) uncatalyzed.
(c) spontaneous.
(d) activated.


(c)

Biology & Microbiology

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A toxin that binds specifically to voltage-gated sodium channels in axons would be expected to _____

A) prevent the hyperpolarization phase of the action potential B) prevent the depolarization phase of the action potential C) prevent graded potentials D) increase the release of neurotransmitter molecules E) have most of its effects on the dendritic region of a neuron

Biology & Microbiology

Histones that are tightly wound by DNA and are the basic unit of chromatin are called  

A.  operons. B.  nucleosomes. C.  protein clusters. D.  repressor genes. E.  facilitators sites.

Biology & Microbiology

Chart the path of air from the atmosphere to the blood. What will be an ideal response?

Biology & Microbiology

Sucrose is formed

A) from two glucose molecules. B) from two monosaccharides through dehydration reactions. C) when ionic bonds link two monosaccharides. D) when glucose and lactose are combined.

Biology & Microbiology