Biology, 25.09.2019 15:00 gracepiechowiak

1) what is the function of a cell’s selectively permeable plasma membrane?

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Answer from: ptrlvn01

A selectively permeable cell membrane allows certain molecules or ions to pass through it by means of active or passive transport.

Answer from: Pauline3607

The plasma membrane is a semi-permeable membrane that allows the movement of a molecule from inside to outside of the cell and vice versa.

Further Explanation:

All the eukaryotes and prokaryotes consist of the plasma membrane. Some plants and bacteria consist of a cell wall that is attached to the cell membrane. The fluid mosaic model describes the membrane of the cell. The membrane is also called a cell membrane. The cell membrane is made up of protein, phospholipids, and cholesterol. Phospholipids make cell membrane permeable and allow diffusion of molecules in the cell and outside of the cell.

The plasma membrane performs many functions in the cell. They act as a barrier to separate the outer environment from the cell. They provide structural support in the cell and make cell flexible. Carbohydrates present in the cell help in the signaling of a molecule. They transport toxic molecules outside the cell by the semi-permeable membrane and prevent the cell from a toxic chemical.

Learn more:

Learn more about cellular respiration Learn more about diffusion Learn more about phospholipids bilayer

Answer Details:

Grade: High School

Subject: Biology

Chapter: Membrane transport

Keywords: Cell, plasma membrane, cell signaling, transport, molecule, semi-permeable, lipid bilayer, lipids, barrier, protein, carbohydrate, fluid mosaic model, toxic.

Answer from: Quest

there's the proffessional site that will you.

Answer from: Quest

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of amino acids , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in genes . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called transcription ), and the mrna is transported to the ribosome . protein synthesis, also called translation , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the nucleotides of mrna three by three, in units called codons , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the amino acid chain goes on to be processed and folded to make the final, functional protein