I need help it’s on fossils
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Answers: 2
Biology, 22.06.2019 09:00
What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.
Answers: 2
Biology, 22.06.2019 18:30
Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas
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Biology, 22.06.2019 21:30
Why is the limitations on supplies of freshwater becoming an increasing problem despite the fact that we have desalination technologies
Answers: 3
Chemistry, 14.01.2020 00:31
Social Studies, 14.01.2020 00:31
Mathematics, 14.01.2020 00:31
Mathematics, 14.01.2020 00:31