If you hold a stethoscope to your chest, you can hear the familiar "lub-dupp" sound of your heart in action. The "lub" you hear is
A. closing of the AV valves.
B. closing of the semilunar valves.
C. closing of the foramen ovale.
D. atrial contraction.
E. stretching of the aorta.
A. closing of the AV valves.
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The taxonomic category that includes species of apes, humans, and their ancestors is known as ____
a. hominids b. hominins c. hominoids d. australopithecines
e. apesBiotechnology can be said to have ancient roots. Explain
What will be an ideal response?
Shane and Diego have a signed contract for Shane to sell Diego some property in the mountains. Shane decides that he does not want to sell the property. Diego also decides that he does not want to buy the property. They meet to discuss it and agree, in writing, to rescind the contract. The rescission:
a. must have additional consideration in order to be valid. b. is supported by the promises not to enforce the original contract. c. is not valid because rescissions must be oral. d. is not valid because land deals cannot be rescinded.
Which antimicrobic does not inhibit cell wall synthesis?
A) Gentamicin B) Clavamox C) Penicillins D) Cephalosporins E) Vancomycin