From what do sarcomas originate?
a. epithelial tissue
b. adipose tissue
c. supportive and connective tissue
Answer: c. supportive and connective tissue
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When producing monoclonal antibodies, why is it important to use as a fusion partner a myeloma cell that is unable to produce its own immunoglobulin?
a. to ensure that allelic exclusion of ? chain occurs normally b. to ensure that the antibodies are homogeneous and able to make strong bivalent attachments to multivalent antigens c. to ensure that the monoclonal antibodies are not autoreactive d. to provide a greater opportunity for making a successful rearrangement at the light-chain locus e. to ensure that antibodies are secreted and not membrane-bound.
Serious side effects of long-term steroid therapy are ___________.
a. cardiac arrhythmia, increased blood pressure, weight loss, and menstrual irregularities b. rash, urticaria, pruritus, and blood dyscrasias c. hepatic dysfunction, blood dyscrasias, hypoglycemia, and increased risk of cardiovascular death d. fluid and electrolyte imbalance, osteoporosis, psychosis, and increased intraocular pressure
During exercise, epinephrine and norepinephrine stimulate liver glycogenolysis indirectly by
A. increasing insulin secretion from the pancreas. B. increasing the uptake of FFA by muscle. C. increasing glucagon secretion from the pancreas. D. lowering plasma cortisol concentration.
Chemotherapy uses which method to kill cancerous cells?
A) Radiation B) Dietary changes C) Drugs D) Manipulation of genes