If you were on a desert island with no fresh water to drink, the level of which of the following would rise in your bloodstream in an effort to conserve water?
a. erythropoietin
b. oxytocin
c. insulin
d. antidiuretic hormone
e. glucose
d
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Two probes, A and B, hybridize very near each other in a region of DNA that contains RFLPs when digested with HindIII
The four maps show the location and intervening distances of the HindIII restriction sites and the binding locations of probes A and B. The maps show alleles H1-H4 present in a population. What band(s) is/are seen in Southern blot analysis of a H2H3 heterozygote using probe B? A) 3 kb and 5 kb B) 3 kb and 8 kb C) 3kb, 2kb, and 8 kb D) 5 kb and 8 kb E) 2 kb, 3 kb, and 5 kb
An animal with an open circulatory system
a. lacks a continuous network of blood vessels that contain the blood at all times. b. can have only one heart. c. has two separate vascular circuits. d. is able to distribute substances faster than a closed system. e. can grow larger than one with a closed circulatory system.
Which action of the heart makes the first of the "lup-dup" sounds?
a. closing of the atrioventricular valves b. closing of the pulmonary valve c. closing of the aortic valve d. the contraction of the left ventricle e. the contraction of the right ventricle
Which of the following is NOT true?
a. Intermediate filaments and actin filaments treadmill b. Intermediate filaments and microtubules have a single monomer c. Intermediate filaments and microtubules have a role in the centrosome d. Two of the above e. None of the above