Fish and sharks sense vibrations in the water that may be caused by prey. The lateral line system of these fish and shark detects this motion through the action of mechanoreceptors known as:
A. hair cells
B. statocysts
C. semicircular canals
D. stereocilia
A
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Gregor Mendel published his work on genetics in ____
a. 1849 b. 1858 c. 1866 d. 1887 e. 1900
If R is dominant to r, the offspring of the cross of RR with rr will ____
a. be homozygous b. display the same phenotype as the RR parent c. display the same phenotype as the rr parent d. have the same genotype as the RR parent e. have the same genotype as the rr parent
How does 0.5 M sucrose (molecular mass 342) solution compare to 0.5 M glucose (molecular mass 180) solution?
A) Both have 6.02 × 1023 molecules. B) Sucrose has 171 molecules, whereas glucose has 90. C) Both have 3.01 × 1023 molecules. D) Sucrose has 171 mg/L, whereas glucose has 90 mg/L.
Synthetic biologists are trying to create cells from raw material. One step in the process is encapsulating genetic material into a compartment. Researchers of the origin of life think that the earliest cells on Earth may have used RNA as their genetic material instead of DNA. As biologists consider which genetic material to use in creating their synthetic cells, which of the following characteristics of a single-stranded RNA genome should they keep in mind?
A. RNA is highly chemically stable relative to DNA. B. RNA cannot serve as a template. C. No enzymes can produce RNA. D. A newly synthesized RNA strand is not identical to the template strand.