A plant cell with a ?P???0.2 MPa maintains a constant volume when bathed in a solution that
has a ?S????0.2 MPa and is in an open container. What do you know about the cell?
a. The cell has a ?S???0.4 MPa.
b. The cell has a ?S????0.2 MPa.
c. The cell has a ?S????0.4 MPa.
d. The cell has a ?????0.4 MPa.
e. The cell has a ????0.2 MPa
C
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The basic unit in ecology is the
A) ecosystem. B) gene. C) individual. D) species.
What are ion pumps
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Which is NOT a function of the kidneys?
A. regulating blood pressure by regulating salt balance in the blood B. production of water from oxygen and bicarbonate ions (HCO3) C. elimination of nitrogenous wastes including urea, uric acid, and creatinine D. hormone secretion to stimulate red blood cell production and regulate sodium ion levels E. monitoring and maintaining blood pH
Tetanus is a very serious disease caused by a toxin from a bacterium. Which of the following is the most obvious symptom?
A) muscle paralysis B) excessive weight gain C) excessive sneezing D) dissolving bones