A scientist is examining the function of macromolecules in a cell. She notices that movement of large molecules into and out of the cell is disrupted when she damages one specific type of macromolecule.
Which macromolecule has she most likely damaged?
a carbohydrate
a steroid
a nucleic acid
a protein
Answers
Larger molecules would require transport protein in order to cross the cell membrane.
There are three modes of transport across the cell membrane.
These are :
1) Active transport
2)Diffusion
3) Facilitated diffusion.
Some proteins in plasma membrane are known as protein channels and they form a way for large and charged molecules to pass through the membrane.
These transport proteins are sandwiched between the phospholidphosphoric bilayer and are involved in facilitated diffusion.
The answer is thus : Protein
It is apprehended that She has most likely damaged a protein.
Because, Proteins creates Channels and Pump it in the Plasma membrane which allow a macro molecule to enter or go out of the cell.
Hence the correct answer from the choices listed above is the last option that is protein.
The macromolecule which has she damaged would be a protein as it can pump and can creates channels in the plasma membrane.
Membrane proteins carryout a wide variety of functions vital to the survival of organisms:
Membrane receptor is proteins which can relay signals to cell's internal and external zones it convey proteins to proceed molecules and ions across the membrane.
Cell :molecules allow cells to identify each other and to interact with themselves.