After ingestion of a food particle, pH changes and enzymes contributed by the ________ will digest and hydrolyze the ingested particle in the phagocytic vacuole.
A. mitochondria
B. endoplasmic reticulum
C. lysosome
D. plasma membrane
Answer: C
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What could be a possible consequence if a structural gene's TATA box is mutated?
A. The transcriptional start site may not function properly. B. Transcription may start at a variety of sites. C. Unusable transcripts may be produced. D. The preinitiation complex may form at the wrong site. E. All of the choices are correct.
Which of the following molecules is NOT a
steroid?
a. testosterone b. estrogen c. glycerol d. cholesterol e. vitamin D
A drug designed to stop neurons from recharging would block the step in which ions
A. are actively pumped against their concentration gradient. B. spontaneously move down their concentration gradient. C. spontaneously move against their concentration gradient. D. are actively pumped down their concentration gradient. E. are in the resting potential state.
A typical epistatic ratio is 9:3:4
Indicate whether the statement is true or false