A substance in which other substances are dissolved is known as a(n) ________
A) solute
B) acid
C) solvent
D) buffer
C
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____ are molecules with identical chemical formulas but different three-dimensional structures
What is the answer to this?
What is a component of a single nucleotide?
A. A phosphate group B. A six carbon sugar C. All five nitrogenous bases
A couple are both heterozygous for the dominant allele for polydactyly. They want to have three children. What is the
probability that all three children will have polydactyly?
a. 3/4 b. 9/64 c. 1/64 d. 27/64 e. 1/2
When an animal cell is placed in a hypotonic solution and water enters the cell via osmosis, the volume of the cell increases until it bursts. This does not happen to plant cells, because _____.
a. certain gated channel proteins embedded in their plasma membranes open as osmotic pressure decreases, allowing excess water to leave the cell b. they have cell walls, which prevent the entry of water by osmosis c. they have large central vacuoles, which provide abundant space for storage of incoming water d. they have cell walls, which provide pressure to counteract the pressure of the incoming water