Paramecia use cilia for locomotion and for gathering organic matter. How are rotifers similar?
A. Rotifers and ciliates are thought to have given rise to all other animal phyla.
B. The corona is made of cilia, and used for swimming and feeding.
C. Both lack a gut.
D. Rotifers are single-celled protists.
Answer: B
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Stromatolites are fossils of ancient, photosynthetic cyanobacteria
Indicate whether the statement is true or false.
Which of the following nucleotide sequences represents the complementary sequence that would bind
to the DNA strand 5'-GACGTT-3'?
a. 5'?TCATGG?3' b. 3'?TCATGG?5' c. 3'?CTGCAA?5' d. 3'?AGTACC?5' e. 5'?TTGCAG?3'
If one strand of a DNA molecule read
ACCTTGAC, what would the other side read?
a. ACCTTGAC b. TGGAACTG c. GTTCCAGT d. CAAGGTGA e. none of these
Which of the following may provide clues to the
evolution of sexual reproduction? a. similarities between mitosis and meiosis at the cellular level b. similarities between mitosis and meiosis at the molecular level c. gene products common to mitosis and meiosis that repair DNA d. gene products produced by an asexually reproducing species that are identical to those that serve in meiosis e. all of these