What is the net movement of molecules from an area of higher concentration to an area of lower concentration?
a. Osmosis
b. Diffusion
c. Redox-reaction
d. Electron transfer chain
e. Metabolic pathway
b
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Which of the following statements about the control of blood volume and blood pressure is false?
A. Angiotensin II stimulates the release of antidiuretic hormone, which increases salt and water uptake by the distal convoluted tubule. B. A drop in blood pressure stimulates the cells of the juxtaglomerular apparatus to release renin. C. Inactive angiotensinogen is converted to angiotensin II by an enzyme released from the lungs. D. Angiotensin II causes the smooth muscle in the walls of the arterioles to contract. E. Blood pressure and volume are monitored by baroreceptors in the aorta and carotid bodies.
Lysosomal storage diseases are the result of deficiencies in lysosomal proteins. An example of one such disorder is
A) adult-onset diabetes. B) tuberculosis. C) Huntington's disease. D) chronic fatigue syndrome. E) Tay-Sachs disease.
Which is not an example of epigenetic inheritance?
A. the inheritance of a single point mutation in a gene B. the inheritance of a regulatory protein that activates its own transcription C. the inheritance of methylation patterns in DNA D. the inheritance of patterns of chromosome condensation
The most conclusive evidence that viruses cause cancers is provided by
A) finding oncogenes in viruses. B) the presence of antibodies against viruses in cancer patients. C) cancer following injection of cell-free filtrates. D) treating cancer with antibodies. E) some liver cancer patients having had hepatitis.