Filtration occurs in which section of a mammalian nephron?
a. glomerulus in the Bowman's capsule
b. loop of Henle
c. proximal tubule
d. distal tubules
e. peritubular capillary
A
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For a given element, all atoms of that element
have the same number of
a. neutrons. b. electrons. c. protons. d. protons and neutrons. e. ions
One of the major differences between the first and second line of defense is that
A. the first line defenses are anatomical barriers whereas the second line defenses are mechanisms. B. the first line defenses are mechanisms whereas the second line defenses are physical barriers to infection. C. the first line defenses involve the respiratory tract whereas the second line defenses involve the gastrointestinal tract. D. the first line defenses involve complement proteins whereas the second line defenses involve antibodies.
Which chamber of the heart does the blood first enter when it returns from the pulmonary circuit?
a. the left ventricle b. the right ventricle c. the right atrium d. the left atrium
Both DNA and RNA polymerases must be able to copy from a template strand with great accuracy. Still, either one can make mistakes that could lead to a mutation. For which one of these polymerases would a mistake be the most serious in the long term?
Explain your answer. What will be an ideal response?