11. Which of the following would indicate that facilitated diffusion was taking place? A) A substance was moving from a region of low concentration into a region of higher concentration. B) Substances were moving against the diffusion gradient. C) A substance was slowing as it moved down its concentration gradient. D) ATP was being rapidly consumed as the substance moved. E) A substance was diffusing much faster than the physical condition indicated it should.
11. Which of the following would indicate that facilitated diffusion was taking place? A) A substance was moving from a region of low concentration into a region of higher concentration. B) Substances were moving against the diffusion gradient. C) A substance was slowing as it moved down its concentration gradient. D) ATP was being rapidly consumed as the substance moved. E) A substance was diffusing much faster than the physical condition indicated it should.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:11. Which of the following would indicate that facilitated diffusion was taking place?
A) A substance was moving from a region of low concentration into a region of higher
concentration.
B) Substances were moving against the diffusion gradient.
C) A substance was slowing as it moved down its concentration gradient.
D) ATP was being rapidly consumed as the substance moved.
E) A substance was diffusing much faster than the physical condition indicated it should.
12. Osmosis, the diffusion of water is distinct from the diffusion of oxygen because
water is a solvent.
b. water is non-polar.
water is a large molecule.
d. oxygen is a dissolved gas.
oxygen is highly polar.
а.
с.
е.
13. Celery stalks that are immersed in fresh water for several hours become stiff and hard.
Similar stalks left in a salt solution become limp and soft. From this we can deduce that the cells
of the celery stalks are
A) hypertonic to both fresh water and the salt solution.
B) hypotonic to both fresh water and the salt solution.
C) hypertonic to fresh water but hypotonic to the salt solution.
D) hypotonic to fresh water but hypertonic to the salt solution.
E) isotonic with fresh water but hypotonic to the salt solution.
14. Animal cells are most likely to experience damage from
а.
an aqueous solution.
b.
an isotonic solution.
a hypotonic solution.
a hypertonic solution.
None of these.
с.
d.
е.
15. Energy is required to transport molecules
if they are charged, like chloride ions.
b. against the concentration gradient.
c. if they are large, like amino acids.
d. dissolved gases needed for respiration.
water when it is needed for photosynthesis.
а.
е.
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