Lipid-soluble compounds, water, and gases simply diffuse across the plasma membrane by
What will be an ideal response?
moving down their concentration gradient (high to low concentration).
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A human population with an age structure diagram that is narrower at the base than at the top would
have ____.
a. zero population growth b. r < 0 c. r > 0 d. been affected by density independent factors e. (K ? N)/K < 1
Which of the following is true regarding the
hydrologic cycle? About 90% of the water that evaporates from the oceans a. remains in the atmosphere. b. is transported over land. c. precipitates onto land. d. precipitates onto the oceans. e. ends up as groundwater.
What additional step needs to be taken in food testing, which does not need to be taken in water or milk testing?
A) Food must be suspended in sterile water B) Food must be washed C) Food must be cooked
Which of the following would be correctly classified as a protein?
A) cholesterol B) starch C) an enzyme D) cellulose