Hich statement about dna is false? plants have dna in three places: the nucleus, chloroplasts, and mitochondria. it is found in nearly all the cells of all living things. it can be used to identify an individual person. humans lack dna in their brain cells. it can be found in human saliva, hair, and blood.

The answer to your question is: d

Explanation:

a) Plants have DNA in three places: the nucleus, chloroplasts, and mitochondria. This is true, DNA is found in nucleus, mitochondria and chloroplasts.

b) It is found in nearly all the cells of all living things. This is true, it is found in nearly all cells because prokaryotic cells do not have nucleus.

c) It can be used to identify an individual person. Yes, this is true, it is a technique very useful to identify persons.

d) Humans lack DNA in their brain cells. False, this cells have a nucleus

e) It can be found in human saliva, hair, and blood. Yes, DNA is found in all those places.

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.