Glucose ingested in your diet enters the bloodstream at a concentration of about 0.1%. If there is more glucose circulating in your blood than is necessary to meet your current energy needs, which of these serves as easily accessible, temporary energy storage?
A) glucose converted to fat
B) complex carbohydrates in the muscles
C) glycogen stored in the liver and the muscles
D) disaccharides in the blood stream
E) water molecules bound to fat
C) glycogen stored in the liver and the muscles
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Molecules brought into the cell from the exterior are placed into vesicles for routing to other locations
such as ____.
a. the nucleus b. lysosomes c. mitochondria d. ribosomes e. cholorplasts
Which of these actions will reduce the rate of diffusion?
a. increasing the temperature b. increasing membrane surface area c. increasing membrane thickness d. increasing the concentration gradient
The first fossil evidence of vascular tissue is seen in the
A. tree ferns. B. rhyniophytes. C. bryophytes. D. green algae. E. tracheophytes.
The atmosphere became rich with oxygen due to the activity of:
A) plants B) bacteria C) eukaryotes D) cyanobacteria E) multicellular animals