Which of the following best describes a proton?
A. one negative charge, no mass, found in orbitals
B. no charge, mass of one, found in nucleus
C. one positive charge, mass of one, found in nucleus
D. subatomic particle with no electric charge
E. None of these choices is correct.
C
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Which of the following are considered an "essential" nutrient?
a. All amino acids b. glucose molecules c. fatty acids d. certain vitamins e. hormones
What is the base unit for mass in the metric system?
A. Newton B. kilogram C. meter D. slug
Which capillary bed dips down into the renal medulla with the loop of Henle?
A) efferent arteriole B) peritubular capillary C) afferent arteriole D) glomerulus E) vasa recta
All connective tissue is derived from an embryonic tissue known as __________.
a. mesenchyme b. reticular c. cartilage d. ground substance