According to the endosymbiotic theory, infoldings in the cell membrane of an ancestral prokaryotic cell gave rise to endomembrane components, including the nucleus, endoplasmic reticulum and golgi apparatus in what would become eukaryotic cells. the evolution of endomembrane components provided for compartmentalization in eukaryotes, leading to more efficiency in cell processes. the endomembrane system includes the endoplasmic reticulum. which statement does not describe the endoplasmic reticulum (er)?
a) the er is an extension of the nuclear envelope.
b) the er serves as a transport network for the proteins produced in its membrane.
c) the er provides separate microenvironments for each of the modifications that must take place to proteins.
d) the er serves a role in protein folding, lipid and steroid synthesis, carbohydrate metabolism and calcium storage
Answers: 3
Biology, 22.06.2019 04:30, Nicoleebel2984
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Biology, 22.06.2019 10:30, keilahsalmon
Which could be a pathway of food through an ecosystem
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Biology, 23.06.2019 03:30, evanwall91
Some animals shiver as a natural, involuntary response to their environment. shivering generates heat. this is an example of which function? reducing movement to regulate body temperature reducing movement to regulate blood glucose maintaining homeostasis by regulating body temperature maintaining homeostasis by regulating blood glucose
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Biology, 23.06.2019 05:30, DrLIFE751
Which statement about variation is true? a) all phenotypic variation is the result of genotypic variation. b) all genetic variation produces phenotypic variation. c) all nucleotide variability results in neutral variation. d) all new alleles are the result of nucleotide variability. e) all geographic variation results from the existence of clines.
Answers: 1
According to the endosymbiotic theory, infoldings in the cell membrane of an ancestral prokaryotic c...
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