Question

the region of the enzyme molecule that interacts with a substrate is called the______.allosteric sitereaction sitecofactor siteactive sitequestion 100.91 ptswhat would happen if the temperature of an enzyme - catalyzed reaction was continually increased?the reaction would increase until the enzyme was denatured, it would then cease.the rate of the reaction would decrease until the enzyme was denatured.the reaction would immediately stopthe reaction rate would increase until all the substrate was used.question 110.91 ptshow do competitive inhibitors hinder biochemical reactions?competitive inhibitors block the substrate from attaching to the allosteric site.competitive inhibitors help the substrate attaching to the active site.competitive inhibitors help the substrate attaching to the allosteric site.competitive inhibitors block the substrate from attaching to the active site.

Explanation:

• For the first question: Enzymes have an active site where the substrate binds. The allosteric site is for other molecules (not the substrate in the basic interaction sense here). There's no standard "reaction site" or "cofactor site" in this context.
• For the second question: As temperature increases, enzyme - catalyzed reactions initially speed up (due to more kinetic energy for collisions) until the enzyme denatures (loses its structure), then the reaction ceases. A decrease in rate before denaturation (as in the second option) is not the typical pattern. The reaction doesn't immediately stop (third option) and it's not about using up the substrate (fourth option, which is more about substrate - limited reactions, not temperature - induced denaturation).
• For the third question: Competitive inhibitors have a similar shape to the substrate and block the substrate from binding to the active site (where the actual reaction - substrate binding occurs). They don't act on the allosteric site (first and third options) and they don't help the substrate bind (second option).

Answer:

• First question: Active site
• Second question: The reaction would increase until the enzyme was denatured, it would then cease.
• Third question: Competitive inhibitors block the substrate from attaching to the active site.