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Not all scientific laws explain how and why something occurs on a scientific level , only scientific theories explain how and why something occurs on a scientifc level.
So , it is false.
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If the membrane of a cell were no longer selectively permeable then "<span>The cell would die as it would not be able to regulate which substances could enter and leave", since a selectively permeable membrane allows both things to enter and leave for the cell's survival. </span>
The Answer is B) Bilateral Symmetry
Answer:
C. HMG-CoA reductase will be dephosphorylated
Explanation:
When a low density lipoprotein particle is taken up by the cell, the impact it will have on the regulation of de novo cholesterol synthesis will be HMG-CoA reductase being dephosphorylated.
HMG-CoA( 3-hydroxy-3-methyl-glutaryl-CoA reductase) is an enzyme which aids the synthesis of lipids. When the lipids are produced and taken up by the cells then the effect of the synthesis stops to avoid excess synthesis and to allow for the action of enzymes which will act ok them in the cells . This is why it leads to a dephosphorylation of the enzyme which stops the action.
Answer:
Plant cells having chloroplasts suggests that they come from a specific species of prokaryotes: cyanobacteria.
Explanation:
The endosymbiosis theory explains that <u>eukaryotic cells</u> (both plant and animal cells) <u>come from a common ancestor: prokaryotes</u>. Chloroplasts and mitochondria have outer phospholipid bilayer membranes and circular DNA molecules like prokaryotes have.
It is believed that ancient bacteria were captured by other cells in the past and thus they became eukaryotic cells.
Cyanobacteria are prokaryotes with the capacity to do photosynthesis as plant cells do.
