Making new genomes is called ________.
A. bioengineering
B. cloning
C. recombinant DNA
D. synthetic biology
E. genetic engineering
Answer: D
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What feature is common to all cells?
a. Plasma membrane b. Chloroplast c. Nucleus d. Flagella e. Mitochondria
A red blood cell is placed in a solution. After a period of time, the cell has shrunk to half its original size. Which of the
following is true? a. Water moved from the solution into the cell. b. The solution inside the cell is hypertonic. c. The cell was placed in a hypertonic solution. d. The cell was placed in an isotonic solution. e. Salt left the cell resulting in its change in size.
Epinephrine triggers vasodilation by binding to which receptors and vasoconstriction by binding to which receptors?
A) beta : cholinergic B) alpha1 : beta1 C) beta2 : alpha D) alpha2 : beta2 E) alpha : beta2
Most of the oxygen in human blood is:
A) carried in the plasma membrane of red blood cells. B) dissolved in the plasma. C) carried in hemoglobin. D) carried on albumin.