Which statement about movement into the cytosol is false?
a. If glucose and sodium can both combine with the same carrier, the presence of one of these molecules decreases the rate of entry of the other.
b. In simple diffusion, the rate of entry of an ion is directly proportional to its concentration in the cytosol.
c. When a glucose symporter becomes saturated, the rate of glucose entry decreases.
d. None of the statements are false.
e. All of the statements are false.
E
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The control center for cellular operations is the
A) nucleus. B) mitochondria. C) Golgi apparatus. D) endoplasmic reticulum. E) ribosome.
Describe what is happening in the diagram
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What is the functional role of the T tubules?
A) synthesize ATP to provide energy for muscle contraction B) enhance cellular communication during muscle contraction C) stabilize the G and F actin D) hold cross bridges in place in a resting muscle
The function of the lymphatic system is to transport proteins, and other particles to the circulation where they are identified by defense cells.
a. true b. false