Which of these statements is true?
a. A single neuron can carry both information going to the brain and information coming from the brain, but a nerve can only carry information in one direction.
b. A single neuron can only carry information in one direction, but a nerve can carry both information going to the brain and information coming from the brain.
c. Both neurons and nerves can carry information in only one direction.
d. Both neurons and nerves can carry both information going to the brain and information coming from the brain.
Ans: b. A single neuron can only carry information in one direction, but a nerve can carry both information going to the brain and information coming from the brain.
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Historically inaccurate diagnosis of acid reflux disorders and gastric ulcers has been improved by _____
A) pH monitoring B) X-ray technology C) screening for H. pylori infections D) colonoscopy E) sonography
Which kind of metabolic poison would most directly interfere with glycolysis?
A) an agent that reacts with oxygen and depletes its concentration in the cell B) an agent that binds to pyruvate and inactivates it C) an agent that closely mimics the structure of glucose but is not metabolized D) an agent that reacts with NADH and oxidizes it to NAD+
Which type of muscle is under voluntary control?
A) Cardiac B) Oxygen enriched C) Epithelial D) Smooth E) Skeletal
When generating a cDNA library, one may get different sequences returned if samples are taken at different times. Why is this the case?
What will be an ideal response?