One centimeter = ________ millimeters
A) 0.01
B) 0.10
C) 10
D) 100
Answer: C
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Which of the following acts as a carrier of foreign DNA and is needed to clone a gene?
A. plasmid B. viral vector C. fungal vector D. plasmid and viral vector E. viral vector and fungal vector
The human body's arterial blood pH is tightly maintained around 7.4 by buffering agents that bind hydrogen ions to stop any change in pH. If an acid-base imbalance overcomes the buffer system, the body changes the ventilation rate, or the rate at which gas enters or leaves the lungs. Changing the ventilation rate changes the concentration of CO2 in the blood, which alters the pH of the blood. In this case, pH 7.4 is the:
A. homeostatic challenge. B. sensor. C. effector. D. integrator. E. set point.
How can the use of chemical control agents (antibiotics, herbicides, pesticides) lead to their decreased effectiveness?
What will be an ideal response?
The kidney was one of the first organs to be successfully transplanted because it is so encapsulated and has limited vessels feeding into or out of it. How many major "connections" must be cut in transplant surgery for one kidney?
A. two: the renal artery and vein B. three: the renal artery and vein and the urethra C. three: the renal artery and vein and the ureter D. five: the renal artery and vein, two ureters, and one urethra E. four: the renal artery and vein, the ureter, and urethra