According to Bohr's planetary model of the atom, why don't the electrons collapse into the nucleus of the atom? The neutrons repel the electrons, keeping them in their energy levels.

The electrons are moving so fast that the pull from the nucleus is not enough to attract them.

The positively charged protons repel the negatively charged electrons, keeping them in their energy levels.

The electrons spin onto the nucleus, but they bounce back out into energy levels.

Atp, shorthand for adenosine triphosphate, is the standard molecule for cellular enger in the human body. all motion and metabolic  processes  within the body begins with energy that is released from  atp, as its phosphate bonds are broken in cells through a  process  called hydrolysis.

C. a pottery art studio

a) adding base pairs

c) unwinding the helix

 

there are possible two correct answers for this question.

dna polymerase doesn’t add base pairs, it adds single nucleotides which are complentar to coding strand . also dna polymerase can’t unwind the dna helix alone. dna helicase can do that, using energy derived from atp hydrolysis.

dna polymerase are enzymes that synthesize dna molecules from deoxyribonucleotides. these enzymes replicate the dna strand and create two identical dna strands from a single original dna molecule. some of dna polymerases have a function of correcting erros which are made during replication and this process is called proofreading. if the dna polymerase detects that incorrectly paired nucleotide has been added, it will remove and replace the wrong nucleotide.

Your answer would be water because their is combined mass of water found on top and over of the planet.