What happens to a cell that is placed in an isotonic solution?
a. The cell swells.
b. The cell shrinks.
c. The cell stays the same size.
d. The cell crenate.
c. The cell stays the same size.
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Predict what would happen if an embryonic epidermal cell switched from expressing Ecadherin to N-cadherin
A. The cell would leave the epidermis and join the neural cells. B. The cell would become a neural cell. C. The cell would die. D. There would be no effect.
Large sponges belonging to the class ____ are harvested for commercial use
a. Hexactinellida b. Sclerospongia c. Spheciospongia d. Demospongia e. Calcarea
All of the following are minerals commonly obtained from the seawater except:
a. manganese. b. bromine. c. gold. d. sulfides. e. chlorides.
Which of the following catalyzes the synthesis of ribosomal RNA in eukaryotes?
A) RNA polymerase I B) RNA polymerase II C) RNA polymerase III D) Both RNA polymerase I and II E) Both RNA polymerase I and III