Which era ended in the greatest mass extinction event in world history?
paleozoic
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Biology, 26.11.2019 17:31, janyak048janyak048
Which era ended in the greatest mass extinction event in world history?
paleozoic
mesozoic
precambrian
none of the above
Answers: 1
Biology, 21.06.2019 21:20, jaimejohnston2
The endoplasmic reticulum (er) is an organelle in some cells. in these cells, it is continuous with the nuclear membrane and forms a large part of the cell\'s total membrane. sort the phrases below as describing rough er, smooth er, both, or neither. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.1) found in prokaryites and uekaryotys2) involved in protein synthesis3) involve in lipid synthesis4) contains molecular chaperones in lumen5) bound with ribosomes6) involved in toxin or drug metabolism7) large systemot internnected tubules, vesicles, and sacs8) "packages" enzymes in vesicles for secretion.
Answers: 2
Biology, 22.06.2019 06:00, pantojaiv90
Monomers are the building blocks of larger molecules, called polymers. for example, proteins are composed of chains of amino acids that are linked together. cellulose is a polymer that makes up plant cell walls. cellulose is made from a chain of c6h10o5 molecules. which monomers are most likely used to produce cellulose? why?
Answers: 3
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