Which describes a molecule? (Select all that apply.) It can be one element by itself.

It can be the combination of different neutrons.

It can be two or more of the same elements combined together.

It can be two or more different elements combined.

Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o

Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin