Enzymes.
Enzymes are responsible to make reactions hard to take place, or even very unlikely to happen, to actually happen. They are proteins that have normally an active binding site where molecules may connect to and preform the reaction. The necessary energy to make a reaction occur is less when aided by enzymes and that's what makes of them catalysts so that reactions may occur even when in lower temperatures.
<span>Answer:
Assuming there is enough acetic anhydride available, then both OH groups will be acetylated to give their acetate esters (OCOCH3). Use a drop of sulfuric acid as the catalyst.</span>
Answer:
The type of epithelium that lines the inferior portions of the pharynx is stratified squamous epithelium.
Explanation:
The pharynx is a structure made up of muscles and mucous membranes -like many internal organs- that is part of the respiratory system and is an intermediate step in the digestive tract.
This structure has two portions:
- <em>Upper or nasopharynx
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- <em>Lower, or oropharynx, in contact with the airways.
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Some even propose that the borderline surface between the pharynx and larynx can be called the laryngopharynx, due to its tissue structure.
The lower portion of the pharynx is covered by a squamous stratified epithelium, the inner layers of which rest on a basal lamina. The more superficial layers provide protection to the interior of the pharynx against friction, in addition to remaining lubricated by mucous secretion at that level.
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Lower portion of the pharynx brainly.com/question/7300121
Answer:
glucose
Explanation:
cell membrane most easily?
Answer: A, B, and D
Explanation: I just took the test
