The motility that permits P. bursaria to move toward a light source is provided by _____
A) pseudopods
B) a single flagellum featuring the 9 + 2 pattern
C) many cilia
D) contractile vacuoles
C
Biology & Microbiology
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An unknown chemical is analyzed and found to contain the bases thymine and guanine. This chemical is most likely
A. mRNA. B. tRNA. C. DNA. D. rRNA.
Biology & Microbiology
At which one of the following checkpoints might the cell cycle be halted if all of the DNA has not yet been replicated?
A) G1 B) G2 C) M D) T E) S
Biology & Microbiology
The single most important organ system in coordinating our responses to a changing external environment is the ______ system.
A. nervous B. skeletal C. muscular D. endocrine
Biology & Microbiology
A person will typically experience the sensation of ________ when fever is starting to occur in the body.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology