Consider a U-tube that initially contains pure water on one side of a selectively permeable membrane
and water plus solute on the other side. Which of the following best describes what will happen next?
a. Solute molecules diffuse across the membrane faster than water molecules.
b. The fluid level rises on the side containing the pure water.
c. The diffusion of water molecules causes an osmotic pressure to build up in the tube.
d. Solute molecules are transported across the membrane by facilitated diffusion.
e. Some water molecules become "bound up" with solute molecules and do not diffuse
freely.
E
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What happens when rocks are newly exposed (or created) in an area?
a. k-selection b. r-selection c. primary succession d. secondary succession
Most organisms live in habitats that provide specific conditions or a(n) ________ that may be very different from regional weather patterns
Fill in the blank(s) with correct word
Which of the following is not a component of the physical habitat in which organisms live?
A. water B. wind C. bacteria D. rocks
Atoms with eight electrons in their outer shells tend to:
A) form covalent bonds. B) be stable and unreactive. C) be chemically reactive. D) form ionic bonds.