Biology, 02.03.2021 01:20 latdoz0952
Viruses lack mitochondria, ribosomes, and Golgi apparatus that are present in cells of organisms. Which statement is supported by this information?
Answers:
Viruses must use other viruses to replicate.
Viruses must undergo mutations to reproduce.
Viruses are not able to produce proteins on their own.
Viruses can grow in isolation without using organelles.
Answers: 2
Biology, 21.06.2019 21:00
Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+
Answers: 1
Biology, 21.06.2019 22:00
Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.
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
Viruses lack mitochondria, ribosomes, and Golgi apparatus that are present in cells of organisms. Wh...
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