Which of the following statements concerning the biochemical oxygen demand (BOD) is CORRECT?
A. It is a measure of the amount of oxygen in water.
B. It is proportional to how potable water is.
C. It is used as a bioreceptor index.
D. It is a measurement of the amount of oxygen that aerobic bacteria require to decompose organic wastes in water.
E. It is a filter system to purify drinking water.
Answer: D
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Which of the following organs of the endocrine system secretes releasing and inhibiting hormones?
a. pituitary gland b. pancreas c. hypothalamus d. adrenal glands e. thyroid gland
Which platelet hormone aids in the prevention of blood loss?
a. ATP b. serotonin c. heparin d. fibrinogen e. thrombin
Consider a protein that is targeted to be an integral membrane protein on the surface of a cell. It has a specific functional domain (domain X) facing the external environment of the cell. How will this protein be oriented in the E.R.?
A) It will be embedded in the E.R. membrane with domain X facing the cytoplasm of the cell. B) It will be embedded in the E.R. membrane with domain X facing the lumen of the E.R. C) It will be completely within the E.R. lumen, not embedded in the membrane. D) It will be outside the E.R. as a peripheral membrane protein.
Plasma contains all of the following components EXCEPT
A) hormones. B) albumin. C) water. D) lymph.