Which organisms are NOT eukaryotes?
a. fungi
b. bacteria
c. plants
d. animals
e. protists
ANSWER: b
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Diatoms have a special problem:
A. because their + and - mating strains are nonmotile and have to be dispersed by currents B. because their heavy siliceous shells impede conjugation C. because they must await a chemical signal from a fish before they can become mobile and search for mating partners D. because their two halves fit like the lid and body of a pillbox and on repeated cell divisions the half that is overlapped gets progressively smaller E. because the gametes experience difficulty in exiting the overlapping halves of their siliceous shells
The letter “A” in the above figure represents which
teeth? a. incisors b. molars c. canines d. premolars e. none of these
The strand of DNA that is not transcribed is called the ________ strand.
A. template B. coding C. noncoding D. complementary
Surface tension tends to ______________________
Fill in the blank(s) with the appropriate word(s).