When does a mutation in a parent affect the offspring

When occurs in gametes

Explanation:

Mutations are changes in DNA sequence that can create genetic variation within the population and thus are the ultimate source of new alleles . Mutations can occur as a result of mistake during the DNA replication, under the influence of environmental factors (UV radiation, chemical agents). They can be harmful, beneficial, neutral. Based on the location of cell mutation, they can be divided into:

somatic mutation-within the somatic cells, these mutations affect only the parents (not inherited)germline mutation-within gametes, can be inherited on offspring.

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.