Q:

What is a sucrose gradient?

A:

Quick Answer

A sucrose gradient is a type of density gradient used to obtain the centrifugal separation of differently sized particles. Sucrose gradients are made by layering sucrose solutions of decreasing concentrations into a centrifuge tube to create a gradient of decreasing density or viscosity.

 Know More

Full Answer

Centrifugation is a technique used to separate small particles of different size, shape or density by subjecting mixtures of particles to high rotational speeds. Particles with different attributes sediment or migrate at different rates during centrifugation, allowing them to be isolated. Several types of centrifugal separation techniques rely on the use of density gradients such as sucrose gradients to stabilize or differentiate separate groups of sedimenting particles.

Learn more about Organic Chemistry

Related Questions

  • Q:

    What is gallic acid?

    A:

    Gallic acid is a type of organic acid found in various fruits, herbs and other plants. This phenolic acid is commonly used for pharmaceutical purposes. Foods that include gallic acid include blueberries, walnuts and apples.

    Full Answer >
    Filed Under:
  • Q:

    What is the difference between urethane and varathane?

    A:

    Colloquially, people use the term urethane to refer to a type of varnish, while the term Varathane refers to a brand of varnishes, sealers and similar products. Technically, urethane is not the correct term for the wood-sealing product, even though it is commonly used. Urethane is another name for ethyl carbamate, which is a chemical used in industrial applications. The correct term for the sealant is polyurethane.

    Full Answer >
    Filed Under:
  • Q:

    Why does active transport require energy?

    A:

    Active transport requires energy because it is pumping particles, such as proteins, ions and sugar molecules, against a concentration gradient: from areas of lower to higher solute concentration. The main energy source for active transport is adenosine triphosphate, or ATP, although electrochemical and light energy are also used.

    Full Answer >
  • Q:

    What are some interesting facts about sandstone?

    A:

    Some interesting facts about sandstone are that it is composed of cemented sand and therefore is a type of sedimentary rock; it has one of the larger particles of all the rock types; and it is used for building, paving, construction and glass making. Sandstone forms where sand is laid down and buried. One famous example of this is the red rock formations of the Grand Canyon in Arizona.

    Full Answer >
    Filed Under:

Explore