Substances contained in food that are necessary for good health are called:
What will be an ideal response?
Nutrients
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During neuronal signaling, a change in membrane potential will cause sodium channels to open and let Na+ ions diffuse down their concentration gradient into the cell. Which of the following helps establish the concentration gradient necessary for this process to occur?
A. Na+/K+ channel B. voltage-gated Na+ channel C. Na+ symporter D. Na+/K+ pump
All of the following characteristics describe glycoproteins EXCEPT ____
a. Glycoproteins provide support and protection. b. Glycoproteins are the main component of the extracellular matrix. c. Glycoproteins include collagen and fibronectins d. Glycoproteins are produced only on free ribosomes in the cytoplasm. e. Glycoproteins are found in tendons, cartilage, and bone.
Organisms such as earthworms and crabs, which dine on small particles of organic matter, are called ____
a. herbivores b. carnivores c. omnivores d. decomposers e. detritivores
How many bones does the carapace of most turtles contain?
a. 40 b. 50 c. 60 d. 70