<span>Cardiovascular heath</span>
Answer:
The plant cell wall is strengthened by the molecular structure of cellulose. Cellulose is made up of ß-glucose arranged upside down, this arrangement aided hydrogen bonds between the hydrogen ions of the hydroxyl group and oxygen of the of the ring of same betta -glucose.
The aggregation of the hydrogen bonds give bundles of strong tensile strength of cellulose called the microfibrils (of 60-70 celluose molecules).They are held together in bundled called fibers.T<u>hese is the source of plant cell walls strength.
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Collagen is the main extracellur matrix (EM) in animal cells.It is a glycoprotein made up of 25%of body protein of animals.Each collagen molecule is made of helix shaped ,three polypeptide chains, wound around each other to form<u> triple helix.</u>The bonds holding helix together are hydrogen and covalent bonds.
Each triple helix is attached to adjacent collagen molecule, parallel to it. The covalent bonds formed a cross link which held the collagen molecules together forming FIBRILS. This gives flexibility to collagen, while maitaing strong tensile strength. This is what is responsible for the structural strength of cell membrane
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.The EM,is futher reinforced with carbohydrate molecules(proteoglycans) which<u> aided in water movements by osmosis following sodium movements into the matrix.</u>
Answer:
Radio waves, microwaves, infrared and visible light can all be used for communication.
The gecko's feet contain molecules that are attracted to the molecules on the surface.
Geckos are lizards which belongs to reptile group. They are found in warm climatic regions of the world. Geckos and some other animals can climb smooth surfaces because of presence of Van der waal forces of attraction between the molecules of gecko's feet with molecules of the surface. The force of attraction is generated due to fluctuations or differences in charge present in molecules of feet and that of surface. The charge fluctuations generally comes into sync and generate attractive force.
<h3>What are the features of Geckos ?</h3>
Most geckos are small, soft-skinned reptiles that are often nocturnal in behaviour. A small, robust body, a big head, and often well-developed limbs are other features they have. Each limb's tips are frequently fitted with digits that have adhesive pads.
- The gecko possesses a variety of adaptive traits that help it avoid or confound predators. If a predator catches the gecko by the tail, the tail can be cut. One of the most well-known characteristics of the species is this. Some geckos may also alter their colour to better fit their surroundings.
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Answer the following: A. Agarose gels are used in gel electrophoresis to separate what type of molecules: B. At what concentration range (%) are agarose gels typically used? C. Indicate why the concentration of Agarose is increased or decreased in certain Agarose gel electrophoresis applications? D. Polyacrylamide gels are used to separate what type of molecules?
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