The molarity of a solution is
A. a measure of solute concentration.
B. the weight of a solid substance.
C. often expressed as grams per unit volume.
D. reflects a measure of the amount of oil dissolved in a water.
E. a scientific term for determining the solubility of a substance in water.
A. a measure of solute concentration.
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Answer the question using the accompanying figure. The structure labeled "7" is the ____
a. food vacuole b. gullet c. macronucleus d. micronucleus e. mitochondrion
Which is mismatched?
A. Benzalkonium chloride - quaternary ammonium compound B. Iodophor - iodine C. Formalin - formaldehyde D. Sodium hypochlorite - chlorine E. Merthiolate - silver
What percentage of species listed under the U.S. Endangered Species Act are threatened because of competition, predation, parasitism, and herbivory by introduced species?
A) 5% B) 10% C) 20% D) 40% E) 100%
The ________ is the first embryonic membrane to appear, and it is the first site of ________.
A. yolk sac, blood cell formation B. allantois, amniotic fluid formation C. yolk sac, placenta development D. amnion, umbilical cord formation E. chorion, neural system development