In a malignant tumor, which of the following is true?
A) Life-threatening issues seldom occur.
B) Cells remain within the epithelium.
C) Cells remain within the connective tissue capsule.
D) Cells do not respond to normal control mechanisms.
E) Invasion is often easy to control.
D) Cells do not respond to normal control mechanisms.
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The capsule that covers the thymus divides it into
A) several reservoirs for storage of hormones. B) many lobules. C) two thymic lobes. D) several unstructured nodules. E) None of the answers are correct.
During the first step of gene expression, an RNA copy of a gene is made. Which of the following represents the correct sequence produced from a gene segment with the following sequence: GAACTAAGC?
A. GAACUAAGC B. CTTGATTCG C. GUUCTUUGC D. CUUGAUUCG
What is the main characteristic of osteoporosis?
A. Inadequate insulin production B. Presence of rheumatoid factor in the blood C. Decrease in bone mass D. All of these are correct
The most likely outcome of nondisjunction is the production of a gamete receiving ________
A) no chromosomes B) 23 chromosomes C) 44 chromosomes D) 46 chromosomes E) 22 chromosomes