MCAT Biological And Biochemical Foundations || Wit
MCAT Biological and Biochemical Foundations || wit
Exam (elaborations)
MCAT Biological and Biochemical Foundations || with Errorless Solutions 100%.
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MCAT Biological and Biochemical Foundations || wit
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MCAT Biological And Biochemical Foundations || Wit
Hyperventilation leads to a decreased blood CO2 correct answers Rate of CO2 exhalation exceeds the rate of CO2 production in the cells
Which of the following best describes how a shift to the right in the dissociation curve in Figure 1 results in more oxygen delivered to tissue? correct answers ...
MCAT Biological and Biochemical Foundations || with
Errorless Solutions 100%.
Hyperventilation leads to a decreased blood CO2 correct answers Rate of CO2 exhalation
exceeds the rate of CO2 production in the cells
Which of the following best describes how a shift to the right in the dissociation curve in Figure
1 results in more oxygen delivered to tissue? correct answers The distance between the curves at
100 mmHg is less than the distance between the curves at 40 mmHg
In RBCs bicarbonate can exchanged for chloride in the plasma. Why do red blood cells in
venous circulation have higher concentration of chloride ions? correct answers Higher
concentrations of CO2 in venous erythrocytes produce bicarbonate and drive the exchange of Cl-
from the plasma into the cell.
Integrins correct answers Transmembrane receptors that modulate cell-to-extracellular matrix
interactions. These proteins often attach to collagen and fibronectin fibers.
Cadherins correct answers Play a primary role in cell-to-cell adhesion (C stands for cell to cell)
forming adherens junctions to bind cells within tissues together.
Dynein correct answers Motor protein that moves cellular cargo along microtubule.
Calcitonin correct answers Decreases plasma concentrations of Ca2+.
-increasing bone formation by increasing osteoblast activity and decreasing osteoclast activity.
PTH (Parathyroid Hormone) correct answers increases Ca2+ concentrations by decreasing bone
formation by osteoblasts and increasing bone degradation by osteoclasts. A drug that mimics
PTH activity will increase osteoclast activity.
During relative refractory period correct answers Na+ channels are de-inactivated, and K+
channels are activated.
Sex Hormones have these effects correct answers -Estrogen causes the endometrial lining to
thicken and inhibits bone resorption
- testosterone causes the development of secondary sex characteristics in boys.
After production of testosterone correct answers It diffuses into the circulatory system and is
transported around the body while bound to a plasma protein
Dosage of sympathomimetic compound correct answers Increased heart rate
Parasympathetic response correct answers -Constriction of pupils
-increased gut activity
-increased salivation
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