When sugar dissolves in water, water is acting as a ____ and the sugar molecules are acting as ____
a. solution; solvents
b. solute; solutions
c. solvent; solutes
d. solute; solvents
e. solvent; solutions
ANSWER: c
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reproduction to occur in a life cycle but is not necessarily required for organisms that only reproduce asexually? a. prokaryotic fission b. mitosis c. meiosis d. cytokinesis e. growth factor activation
Pores on the surface tissue of stems and leaves of plants that are able to open and close are called
a. tracheoles b. stomata c. sori d. epipores e. micropyle
Antigens are
A. non-self proteins. B. proteins on the surface of B-cell membranes. C. proteins that consist of two light and two heavy chain polypeptide chains. D. proteins on the surface of macrophage membranes. E. proteins on the surface of T-cell membranes.
How are nonnative species frequently transported?
a. Acquired for home aquariums b. Cargo containers c. Aquaculture d. Ships' ballast