Which of the following statements is (are) false? i. vertebrate blood is a type of connective tissue. ii. plasma is composed mainly of water. iii. most infectious agents we breathe in are filtered through the tonsils. iv. lymph is returned to the circulatory system through ducts near the shoulders. i only ii only iii only iv only i and iii only
Answers: 2
Biology, 22.06.2019 02:50, mccay5016987
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 16:00, leeenaaa95
Fill in the blank with the correct sphere label. a: ⇒ geosphere b: ⇒ biosphere c: ⇒ hydrosphere
Answers: 1
Which of the following statements is (are) false? i. vertebrate blood is a type of connective tissu...
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