HELP PLS The diagram below shows
the reaction of nitrogen with hydrogen to produce ammonia.
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Key
hydrogen atom
nitrogen atom
The reaction above takes place in a closed system. What is true about the mass of the nitrogen atoms in this reaction?
OA. The mass of the nitrogen atoms increases in the reactants and decreases in the products.
Ов. The mass of the nitrogen atoms in the reactants is greater than the mass of the nitrogen atoms in the products.
OC. The mass of the nitrogen atoms in the reactants equal to the mass of the nitrogen atoms in the products.
OD. The mass of the nitrogen atoms decreases in the reactants and increases in the product

Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. the mutation could occur in any region of a gene. the effect of the mutation on the phenotype of the offspring will be determined by where the mutation occurs and its effect on the final gene product. in which of the following scenarios could the mutation alter the phenotype of the offspring? select all of the scenarios that apply the mutation occurs in the promoter and affects the rate of gene transcription. the mutation results in a new, dominant allele the mutation occurs in a portion of an intron not responsible for exon splicing the mutation occurs in a gene that controls development and alters differentiation of a cell type during development. the mutation occurs in a codon and alters the function of the final protein e mutation occurs in a codon, and the amino acid sequence of the final protein is unchanged.