The major determinant of the amount of oxyhemoglobin formed in the lungs is ____
a. partial pressure of oxygen
b. acidity
c. temperature
d. iron concentration
e. blood pressure
ANSWER: a
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If this population of butterflies is in genetic
equilibrium, the frequency of the homozygous dominant genotype in the new generation will be a. p2. b. 2pq. c. p2 + q2. d. 490 AA. e. p2 and 490 AA.
All animals with tissues have
A) three germ layers. B) radial symmetry. C) bilateral symmetry. D) symmetrical bodies. E) two germ layers.
While performing an ELISA, a lab technician fails to rinse away unbound detection antibody from the wells before adding the substrate for the reporter enzyme. What is the likely outcome of this error?
A) The test results will not be affected. B) The control wells will indicate a negative result, but the wells with the test sample will indicate a positive result. C) All wells, including controls, will indicate a negative result. D) All wells, including controls, will indicate a positive result. E) The outcome cannot be determined from this information.
Which of the following body parts is surrounded by a mucous membrane?
A. cavities of freely movable joints B. abdominal cavity C. heart D. ovaries E. tubes of the digestive system