The cell membrane is composed by a lipidic bilayer. Phospholipids are most likely found in the membrane of a eukaryotic cell.
<h3>MEMBRANE COMPOSITION</h3>
The cell membrane is composed of
- glucans incrusted in between.
The membrane is mostly composed of phospholipids.
<h3>PHOSPHOLIPIDS</h3>
Phospholipids are amphipathic molecules.
They have hydrophilic heads facing the exterior and the interior of the cells and hydrophobic tails that arrange against each other in the interlayer space.
Lipids can easily change places with other lipids by lateral diffusion in the same layer.
They can diffuse transversally to the other layer but not as easily as lateral diffusion.
There are also other lipidic movements as rotational diffusion that imply the rotation of the molecule.
Phospholipids are most likely found in the membrane of a eukaryotic cell.
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Answer:
B. Electrophoresis separates molecules based on charge differences, thereby making it possible to separate molecules that are similar in size, shape, and density.
Explanation:
Chromatography is a process that is used for the separation of complex mixtures of molecules by many repeated partitioning between a flowing (mobile) phase and a stationary phase. The process exploits the properties of the molecules such as charge, size, binding affinity, etc.
However, gel electrophoresis is the technique that separates the molecules based on their charge or mass. It can separate a mixture of molecules with a similar charge based on their mass. Likewise, if all the molecules of a mixture have the same mass but differ in charge, gel electrophoresis can be used to separate them based on their different charges.
For example, a mixture of proteins is allowed to run through the gel of cross-linked polymer polyacrylamide under electrical potential towards the positive or negative electrode. The polyacrylamide gel serves as a sieve and allows the proteins to migrate in proportion to the charge to mass ratio. If all the proteins are of the same mass, gel electrophoresis would separate them based on their charge.
Pituitary Glands
Explanation:
The pituitary gland is crucial as it takes messages from the brain and uses them to produce hormones which affects many parts of the body, including stimulating all the other hormone-producing glands to create their hormones. Due to this reason, it is often referred as the ‘master gland.’ The front pituitary produces hormones which affect the breasts, adrenals, thyroid, ovaries and testes.
Answer:
Application of genomics to evaluate the efficiency and safety of the drug, on the basis of the genomic sequence of an individual is known as <u>Pharmacogenomics</u>.
Explanation:
Pharmacogenomics is defined as the study of the effects of genome on drug response. Pharmacogenomics includes studying the influence of the inherited genetic makeup of an individual on drug response and then correlating the gene expression with pharmacodynamics and pharmacokinetics of the drug.
This method is used to develop drugs with minimal side effects and maximum efficiency, by taking in consideration the patients' genotype.
<u>Therefore, the application of genomics to evaluate the efficiency and safety of the drug, on the basis of the genomic sequence of an individual is known as </u><u>Pharmacogenomics</u><u>. </u>
