The filtration rate at the Bowman's capsule is kept constant in response to small variations in blood
pressure by the actions of
a. the renin-angiotensin-aldosterone system.
b. osmoreceptors.
c. atrial natriuretic factor.
d. the juxtaglomerular apparatus.
e. antidiuretic hormone.
D
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A plant with the genotype AABbcc is ________
A. triploid B. heterozygous for two different genes C. recessive for three different genes D. homozygous for two different genes
The drug that is used to treat typhoid fever and brain abscesses, but can cause aplastic anemia, is ________.
A. chloramphenicol B. gentamicin C. ciprofloxacin D. clindamycin E. bacitracin
Which of the following is not a reason cells divide?
A.) The cell gets too big to process and transport nutrients B.) New cells are needed for growth C.) DNA cannot be copied quickly enough in large cells D.) Surface area-to-volume ratio becomes too large
You are cleaning out an old lab freezer and find a tube that contains the ground-up remains of an unknown animal. Your research advisor suggests that you perform chemical assays to determine what molecules made up the animal. After analyzing the data,
you determine that the animal contained a large amount of chitin. What type of animal was in the tube? A) mollusc B) reptile C) arthropod