Which of the following is an example of antiport?
-simultaneous movement of an amino acid and protons into the cell
-simultaneous movement of an amino acid and protons out of the cell
-coupling of the inward movement of water with the outward movement of protons
-coupling of the inward movement of Na+ with the outward movement of Ca++
-none of the choices are correct.
coupling of the inward movement of Na+ with the outward movement of Ca++
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Which of the following sequences accurately describes the series of structures through which air passes through on the way into the mammalian lung?
A. pharynx ? larynx ? trachea ? bronchi ? bronchioles ? alveoli B. larynx ? pharynx ? trachea ? bronchi ? bronchioles ? alveoli C. pharynx ? trachea ? larynx ? bronchi ? bronchioles ?alveoli D. bronchi ? bronchioles ? pharynx ? larynx ? trachea ? alveoli E. alveoli ? bronchioles ? bronchi ? trachea ? larynx ? pharynx
Most bacterial intestinal infections may be traced to
A. Vibrio spp. B. C. jejuni. C. Salmonella spp. D. Enterobacteriaceae. E. All of the choices are correct.
The release of an egg from an ovary is called ________
A) oogenesis B) gametogenesis C) ovulation D) menstruation
What are Group I and Group II introns, where are they found, and what makes them different from other introns?
What will be an ideal response?