Dna is found in all the following cell structures except the a. nucleus. b. mitochondria. c. chloroplasts d. ribosomes.

DNA is found in all the following cell structures except the Ribosomes.

Option D

Explanation:

In the cell, organelles such as nucleus, mitochondria and chloroplast have their DNA. Organelles are film bound sub units inside a cell that is similar to organs in the body which performs explicit capacities. The nucleus is the control focus of the cell, and houses hereditary data.

The mitochondria are involved in respiration process and they are involved in production of ATP which acts as energy currency of the cell and chloroplasts also has its own genetic material due to it important function. So among the four options given in the question, ribosome lacks DNA.

yes!

explanation:

because it has a type of fat that can make you extremely sick

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.