Hydrogen peroxide may be used as a sterilant on living tissue
Indicate whether this statement is true or false.
FALSE
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A cool, damp, north-facing slope is covered with ferns, whereas an adjacent drier south-facing slope has none. What type of distribution pattern is this?
a. random b. near uniform c. clumped d. concentrated e. isolated
In England, at a time when milk was still delivered to doorsteps each morning in foil-capped glass bottles, a songbird called the great tit started pecking through the caps and drinking the cream in the necks of the bottles. This behavior spread through
the great tit population in a matter of years. The emergence and spread of this behavior probably depended on A) trial-and-error learning plus habituation. B) trial-and-error learning plus social learning. C) trial-and-error learning plus imprinting. D) habituation plus social learning.
Please match the cell types with the statements that most accurately describe them to test your understanding of prokaryotic cells, eukaryotic cells, and viruses.
Contains a nucleus and undergoes mitosis A) Prokaryotic cells B) Eukaryotic cells C) Viruses D) Both eukaryotic and prokaryotic cells E) Prokaryotic cells, eukaryotic cells and viruses
The kidneys of sharks excrete ions of:
a. urea. b. salts. c. calcium and magnesium. d. trimethyamine oxide. e. ammonia.