Which tumor originates in epithelial tissue?
A. Lymphoma
B. Sarcoma
C. Carcinoma
D. Leukemia
Answer: C
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When contracted, this muscle causes expansion of the thoracic cavity and increases pressure in the abdominopelvic cavity. Its insertion is on a central tendon.
A. Serratus posterior inferior B. Internal intercostals C. External intercostals D. Transversus thoracis E. Diaphragm
A contractile cell with a sustained membrane potential of 0 mV is experiencing the:
A) plateau phase. B) repolarization phase. C) initial repolarization phase. D) rapid depolarization phase.
Which statement best describes why ATP is an important nucleic acid in the body?
A) ATP is the storage form of glucose in the body. B) ATP is a modified RNA molecule used to store genetic information. C) ATP carries out the orders for protein synthesis issued by DNA. D) ATP functions as a catalyst to increase reaction rates. E) ATP provides a form of chemical energy all body cells can use.
When genes are switched off to allow a cell to restrict or specialize its functions, the process is called
A) adaptation. B) differentiation. C) structural integration. D) destabilization. E) cellular activation.