In the biology lab, you observe animal cells that show the first sign of cytokinesis, which is the formation of the
A. nucleolus.
B. cell plate.
C. cleavage furrow.
D. cell wall.
E. nuclear envelope.
C. cleavage furrow.
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One example of an electron acceptor that can be used in anaerobic respiration is
A) NADH. B) water. C) nitrate. D) FMN.
If a particular noncoding sequence is repeated more than 100,000 copies per genome, this is considered ________ repetitive DNA
A. highly B. moderately C. low D. All of the answer options are correct. E. None of the answer options is correct.
In science, a theory is defined as ____
a. a speculative guess b. a hypothesis c. an explanation that is well documented and consistent with the evidence d. a description of a phenomenon for which there is no explanation e. a personal conviction
Primary treatment of sewage involves mostly
a. the physical treatment of wastewater through filtration and sedimentation. b. the biological degradation of the organic material. c. the detoxification of heavy metals. d. altering the pH of the wastewater to kill bacteria. e. all of these.