Biology, 19.11.2019 09:31 minecraftsam2018
Which of the following accurately describes an example of how materials can move across the cell membrane through active transport?
Answers: 2
Biology, 22.06.2019 02:50
Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?
Answers: 1
Biology, 22.06.2019 10:30
Which of the following statements is accurate about evolution? question 10 options: natural selection only eliminates odd individuals. evolution means that a population never has changes in its genetic frequencies. mutations are always harmful. evolution means that a population undergoes changes in its gene frequencies over time.
Answers: 1
Biology, 22.06.2019 16:00
Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down
Answers: 1
Which of the following accurately describes an example of how materials can move across the cell mem...
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