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What would happen if the fatty acids in acell membrane were polar molecules?
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What is the site of phospholipid fatty acids and steroid synthesis and a temporary storage area for newly synthesized molecules?
cell membrane
Cells membranes do not have what type of macromolecules?
Nucleic acids. The membrane contains mostly lipids. Other molecules acting as receptors contain both protein and carbohydrates. so the only macromolecule missing is nucleic acids.
How do Integral membrane proteins function?
The location of their polar and non-polar amino acids. I'll buy that. But there's more. the membranes are hydrophyllic (polar) on the outside and hydrophobic (non-polar) on the inside. Proteins that pass through the membrane are stabilized by the membrane, and also stabilize the membrane in return. Based on the sequence of the amino acids, there are polar / hydrophyllic parts of the protein and nonpolar / hydrophobic parts. They interact with the membrane like little magnets to hold everything in place...
What would happend if the fatty acids in a cell membrane were polar molecules?
The cell breaks open, because the cell membrane is made of a phospholipid bilayer
Which molecues cross the membrane of a cell easily and which do not?
Non-polar molecules (such as fatty acids, steroid hormones and O2) pass freely through the cell membrane. Small uncharged molecules (such as H2O) also pass freely, but are slower. Large, polar molecules and ions (such as Na+ and K+) do not pass freely. Macromolecules (such as proteins and polysaccharides) do not pass through the cell membrane. Molecules and ions that cannot pass freely through the cell membrane rely on other means, such as protein transporters, to move in to the cell.
What would happen if a fatty acids in a cell membrane were polar molecules?
The cell would dissolve in water.
What would happen if the fatty acids in cell membrane were polar molecules?
The cell would dissolve in water.
Small nonpolar hydrophobic molecules such as fatty acids?
Small, nonpolarn hydrophobic molecules such as fatty acids easily pass through a membrane's lipid bilayer.
A cell membrane is relatively impermeable to substances that are?
water-soluble molecules such as amino acids, sugars, protiens, nucleic acids, and various ions
What would happened if the fatty acids in a cell membrane were polar molecules?
The cell would dissolve in water.
What is the site of phospholipid fatty acids and steroid synthesis and a temporary storage area for newly synthesized molecules?
cell membrane
Why do oxygen molecules easily diffuse across a cell membrane while protein molecules do not?
Cell membrane is semipermeable and oxygen molecules have size required for easy passqge while Glucose molecules do not have that size required for easy passage.
In the sodium potassium pump sugars and amino acids or other molecules are brought through the membrane along with sodium ions through?
Coupled Channels
Cells membranes do not have what type of macromolecules?
Nucleic acids. The membrane contains mostly lipids. Other molecules acting as receptors contain both protein and carbohydrates. so the only macromolecule missing is nucleic acids.
How do Integral membrane proteins function?
The location of their polar and non-polar amino acids. I'll buy that. But there's more. the membranes are hydrophyllic (polar) on the outside and hydrophobic (non-polar) on the inside. Proteins that pass through the membrane are stabilized by the membrane, and also stabilize the membrane in return. Based on the sequence of the amino acids, there are polar / hydrophyllic parts of the protein and nonpolar / hydrophobic parts. They interact with the membrane like little magnets to hold everything in place...
What would happend if the fatty acids in a cell membrane were polar molecules?
The cell breaks open, because the cell membrane is made of a phospholipid bilayer
How do things get thourgh a cell membrane?
There are various ways that things can get through the cell membrane. It will depend on the type of particle (size, charge, etc.). Non-polar molecules, such as fatty acids, pass freely through the membrane. Small, uncharged molecules, such as water, also pass freely. Large polar molecules and ions, such as K+ , and macromolecules, such as proteins, so not pass freely through the membrane. They must go through protein channels, pores, etc.
