Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission. Electromagnetic waves travel in a vacuum whereas mechanical waves do not
Answer:
Enzymes are proteins that bind to a molecule, to modify it and lower the energy required to make it react. ( In other words , enzymes are biological catalysts.
Catalysts lower the activation energy for reactions.
In simple terms , The lower the activation energy for a reaction, the faster the rate. )
The activation energy is the energy needed to start a reaction.
Explanation:
Thus enzymes speed up reactions by lowering activation energy.
A microbe that grows only at the bottom of a tube of thioglycollate medium is probably a(n) <u>obligate anaerobes</u>.
Thioglycolate broth would be a versatile enrichment and differential medium that is largely used to ascertain the oxygen needs of bacteria. Obligate anaerobes can grow because of the oxygen-consuming properties of sodium thioglycolate inside the medium.
A variety of oxygen concentrations are produced in the medium across its depth as a result of this and the diffusion of even more oxygen as from broth's surface.
Because oxygen would be poisonous to obligate anaerobes, they congregate near the tube's bottom where another oxygen level is lowest.
To learn more about obligate anaerobes here
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Cellular respiration is t<span>he oxidation of organic compounds to extract energy from chemical bonds.</span>
Answer:
Option (1) and (3)
Explanation:
The ocean covers a large portion of earth and the temperature of the ocean rises due to the high absorption of heat. This is because of the higher amount of incoming solar radiation and the increasing green house gases in the atmosphere of the earth.
This increasing temperature of the ocean has certain negative effects.
Due to the increasing ocean temperature, the ocean water will become warm that will enhance the temperature of the polar water, as a result of which the glaciers and ice caps of the polar region will melt.
The increasing ocean water temperature will lead to the evaporation of water into the atmosphere, which will eventually cause rainfall. This will cause flooding in the low-elevated coastal areas. There occurs increasing frequency of major storms.
Thus, the correct answers are options (1) and (3).
