Answer:Answer:
For 1: The correct answer is Model 1, 2, and 4.
For 2: The correct answer is Option 1.
Explanation:
For 1:
An element has 3 subatomic particles: electrons (E), neutrons (N) and protons (P).
Atomic number is defined as the number of protons or number of electrons.
Atoms having same number of protons are same. From the given models, Model 1, 2 and 4 have 2 protons with different neutrons. Hence, these models belong to same element.
For 2:
A compound is defined as a substance in which two or more types of elements combine in a fixed ratio. For Example: is a compound made out of atoms of carbon and oxygen.
Hence, the correct answer is Option 2.
Gum doesn’t get a pair Ed
Am operon is a set of genes transcribed under the control of an operator gene. More specifically, anoperon is a segment of DNA containing adjacent genes. <span>Operons are found in prokaryotes (bacteria and archaea), and (in rare cases) in eukaryotes. Hope this answers the question.</span>
Rapid burial and the possession of hard parts.
