The binding of a peptide hormone to its receptor starts a biochemical chain of events that changes the pattern of __________.
a. diffusion through the lipid portion of the cell membrane
b. enzymatic activity within the cell
c. An RNA transcription in the nucleus
d. calcium ion release or entry into the cell
Ans: b. enzymatic activity within the cell
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Which of the following is NOT one of the four basic types of tissues found in the human body?
a) epithelial tissue b) connective tissue c) muscular tissue d) necrotic tissue e) nervous tissue
Glomerular blood flow is unique because it flows
A) through a glomerular portal vein. B) directly from the renal artery into the glomerular capillaries. C) from arteriole to capillary bed to arteriole. D) from arteriole to capillary bed to vasa recta. E) through the peritubular capillaries then into the glomerular capillaries.
Evaluate the pulmonary pressures provided, and determine what portion of the respiratory cycle is represented. Transpulmonary pressure = 6 mmHg Intrapleural pressure = 667 mmHg Atmospheric pressure = 670 mmHg Intrapulmonary pressure = 673 mmHg
A. Thoracic volume increase with lung collapse B. Normal expiration C. Normal inspiration D. Lung volume is unchanged
Which type of burn appears white or black with no immediate pain?
A. First-degree B. Second-degree C. Fourth-degree D. Partial-thickness E. Third-degree