The animal phylum with the most species is
a. Mollusca.
b. Annelida.
c. Arthropoda.
d. Platyhelminthes.
d
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The binomial nomenclature for humans is Homo sapiens. The term "Homo" refers to the
a. genus name. b. species name. c. scientific name. d. trivial name. e. ordinal name.
What type of junction allows electrical signals to rapidly spread from cell to cell?
a. tight junctions b. elastic junctions c. basement membranes d. desmosomes e. gap junctions
This kind of mutation causes a ribosome to stop protein syntheses by introducing a stop codon too early.
A. missence B. nonsense C. point D. All of these answers are true.
A plant, by opening and closing its stomata, must achieve a balance between
A) water loss and carbon dioxide uptake. B) oxygen loss and water uptake. C) sugar loss and oxygen uptake. D) carbon dioxide loss and sugar uptake. E) carbon dioxide uptake and oxygen loss.