Contains dna control center has a membrane found in eukaryote cells these characteristics describe the of a cell. a) chromosomes b) mitochondria c) nucleus d) ribosomes

The correct answer will be option- C (nucleus).

Explanation:

The nucleus is a membrane-bound organelle which encloses the genetic material of the organisms. The nucleus is a characteristic feature of the eukaryotic cell which is not found in the prokaryotes.

The nucleus encloses the DNA molecule inside it and helps protect the genetic material from the external reducing environment as well s from the foreign material as DNA stores the information required to live in a coded form.

Thus, the option- C (nucleus) is the correct answer.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.