White blood cells and ____ carry out innate immune responses
a. red blood cells
b. T cells
c. B cells
d. skin
e. defensive proteins
ANSWER: e
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How do binomial, or two-part, names compare with early versions of scientific names?
a. they are longer b. they are shorter c. they are completely descriptive d. they are in english
Which of the following best explains the attraction of water molecules to each other?
A) Nonpolar covalent bond B) Polar covalent bond C) Ionic bond D) Hydrogen bond E) Electron-proton interaction
Steroid hormones are lipid soluble and diffuse through the plasma membrane into a cell
Indicate whether the statement is true or false
In individuals with normal blood sugar levels, glucose is reabsorbed into the bloodstream in the kidney by members of the GLUT transporter family, which form an aqueous pore across the membrane through which glucose can move passively. As a result, no glucose is excreted in urine. However, in people with untreated diabetes mellitus, blood sugar levels are high and glucose is often present in the urine. What can explain this occurrence?
A. High blood glucose levels reverse the concentration gradient, allowing untransported glucose to be excreted in urine. B. The GLUT transporters cannot hydrolyze ATP quickly enough for ATP to transport the extra glucose, thereby allowing untransported glucose to be excreted in urine. C. The GLUT transporters become saturated, allowing untransported glucose to be excreted in urine. D. High blood glucose levels interfere with the coupled transport of water and glucose, allowing untransported glucose to be excreted in urine.