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.
What are the differences between plant and animal mitosis? The most observable difference is the way in which cytokinesis occurs. In plants a new cell wall is fashioned between the new daughter cells, while in animal cells the cell membrane constricts to pinch the parent cell into daughter cells.
Here's the solution,
<u>1. Condensation</u> :
=》the changing of a gas to a liquid
<u>2</u><u>.</u><u> </u><u>troposphere</u><u> </u><u>:</u>
=》the layer in which weather changes occur
<u>3</u><u>.</u><u> </u><u>Ozonosphere</u><u> </u><u>:</u>
=》layer absorbing ultraviolet rays
<u>4</u><u>.</u><u> </u><u>evaporation</u><u> </u><u>:</u>
=》the changing of liquid to a gas
<u>5</u><u>.</u><u> </u><u>G</u><u>reenhouse</u><u> </u><u>effect</u><u> </u><u>:</u>
=》carbon dioxide and water vapor trapping heat given off by Earth
<u>6</u><u>.</u><u> </u><u>Automobile</u><u> </u><u>:</u>
=》the major source of pollution
<u>7</u><u>.</u><u> </u><u>Ionosphere</u><u> </u><u>:</u>
=》layer responsible for reflecting radio waves
The asteroid belt is the circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets.
recycling and using alternative power