Within prokaryotic cells, the ______ is the region where DNA is found.
a) rough endoplasmic reticulum
b) flagellum
c) smooth endoplasmic reticulum
d) nucleoid
Answer: d) nucleoid
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Explain the principle difference between direct agglutination and passive agglutination
What will be an ideal response?
Imagine that fungal hyphae were as thick as a human hair. How might this increase in thickness affect the ecological role of fungi?
A. Their rates of decomposition of detritus would decrease because their ratio of surface area to volume would be decreased. B. Their rates of decomposition of detritus would increase because their ratio of surface area to volume would be increased. C. There would be no effect on the rates of decomposition of detritus. D. There would be no effect on the rates of decomposition of detritus because the fungi would still be heterotrophic.
Cyanobacteria such as Synechococcus and Prochlorococcus are predominate members of the phytoplankton in illuminated surface waters.
Answer the following statement true (T) or false (F)
What determines the sequence of the amino acids in a particular protein?
a. its primary structure b. the sequence of nucleotides in RNA, which was determined by the sequence of nucleotides in the gene for that protein c. the sequence of nucleotides in DNA, which was determined by the sequence of nucleotides in RNA. d. the sequence of RNA nucleotides making up the ribosome e. the three-dimensional shape of the protein