A sea squirt uses its ____ for food collection and gas exchange
a. siphon
b. pharynx
c. tunic
d. mantle
e. radula
B
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Which of the following is nottrue of the regulation of the trp operon?
A. Transcription attenuation relies on the fact that bacteria lack a nucleus. B. The level of tryptophan in the cell regulates the rate of transcription after transcription begins. C. The level of tryptophan in the cell regulates the rate of transcription before transcription begins. D. RNA polymerase is recruited to the promoter when tryptophan levels are high.
An example of a single-celled fungus would be
a. yeast. b. hypha. c. mycelia. d. eukaryote. e. chitin.
Algins, compounds used in the food industry,
are obtained from
a. foraminiferans. b. brown algae. c. dinoflagellates. d. red algae. e. green algae.
The "r" in "rRNA" stands for reticulum RNA because this type of RNA is associated with the endoplasmic reticulum.
Answer the following statement true (T) or false (F)