Proteins that are recaptured from tubular fluid are transported into the luminal membrane by way of
A. diffusion.
B. pinocytosis.
C. secondary active transport with a symporter.
D. primary active transport with a protein pump.
E. facilitated diffusion with a carrier.
B
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The direction from which a sound is coming can be determined by the
A. volume of the sound. B. frequency of sound waves. C. amplitude of the sound waves. D. differences in the time that sound waves take to reach each ear. E. timbre of sounds.
Adaptive immunity is stimulated by ________.
A. histamines B. complement C. antigens D. plasma proteins E. antibodies
The ___ urethra runs through the penis and opens to the outside at the external uretheral orifice.
A. spongy B. penile C. prostatic D. membranous
Implantation of a blastocyst
A. requires the presence of high concentrations of follicle-stimulating hormone (FSH). B. takes place at a time in the typical menstrual cycle when estrogen concentration in the blood is higher than progesterone concentration in the blood. C. normally occurs within the oviduct (fallopian tube). D. normally begins around day 21 of the typical menstrual cycle. E. occurs within 24 hours of fertilization of the oocyte.