U·ni·cel·lu·laradjective
BIOLOGY(of protozoans, certain algae and spores, etc.) consisting of a single cell.(of an evolutionary or developmental stage) characterized by the formation or presence of a single cell or cells.
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Answer:
a. PPOs are denatured at high temperature
Explanation:
Polyphenol oxidase, PPO, is one of the most studied enzymes in the food industry as it is responsible for enzymatic browning reactions in fruits and vegetables. One of the reasons why its study is important is because commercially it is undesirable, since it modifies the sensory, nutritional and in general quality properties that impair the commercialization of a product.
The importance of controlling polyphenol oxidase is that it largely determines the quality and economic value of fruits and vegetables harvested, stored and processed. Bruising, chopping and other mechanical procedures damage the walls of fruits and vegetables which allows oxygen to penetrate, resulting in darkening or enzymatic browning reactions.
Enzymatic browning can be controlled through the use of chemical and physical methods, often used in combination. The commonly used physical methods are the reduction of temperature, oxygen and the use of modified atmospheres or coating films. The use of chemical methods will depend on what you want to inhibit, be it the enzyme, the substrate (oxygen or phenolic compounds) or the products.
Answer:
B) Thin platelets with chain folds at the faces
Explanation:
Crystalline polymer is folding together of molecular chain in an ordered way to form lamella. Polymer crystallize after cooling from evaporation of solvent. It affects the properties of the polymer such as thermal property.
Polymer on freezing becomes disorder forming an amorphous solid.
Answer:
The path of an object as it revolves around another object in space is called an orbit. Geosynchronous orbit is the orbit of a satellite that revolves around Earth at the same rate that Earth rotates.
Explanation:
Answer:
Indole-3 acetic acid
Explanation:
IAA causes cell wall extension by activating the proton pump, which keeps the cell wall acidic at a pH of around 4. The cell wall pressure is reduced in these conditions, and water enters the cell, resulting in an increase in cell volume. As the cell grows in size, new cell wall material is required to keep the wall stable. Auxin IAA is a naturally occurring substance. It also promotes cell enlargements, cell division in the vascular cambium, root initiation enlargement, cell division in VA.
IAA can be found in the seeds of many plants, especially legumes like peas and broad beans.
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