Which describes the particle or particles that are in the nucleus of an atom? *
1. proton and electron

2.electron only

3.electron and neutron

4.neutron and proton

Glycogen is an energy-storage molecule in humans. a hormone that is called insulin controls the storage of glycogen in the liver. insulin is made up of amino acids.

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called

Select the correct answer from each drop-down menu proteins are