A solution that is a 4 on the pH scale is an acid, about the acidity of tomato juice.
A), the S phase. It won't let me send my answer because it's too short so I'm adding this. Haha.
An enzyme is a protein produced by an organism that speeds up chemical reactions
The repressor protein blocks the genes from making mRNA.
<span>This is an ascribed status. These are the characteristics and parts of one's being that are attained at birth or given to them later in life without their control. Age, sex, race, ethnicity: all of these characteristics are largely out of a person's control and are ascribed to them from the time they are born.</span>