Which is true of most reactants in living things?

Answer 1

Most reactants in living things, also known as substrates, are organic molecules that participate in biochemical reactions, often facilitated by enzymes. These reactants are typically involved in metabolic processes, such as cellular respiration and photosynthesis. They often exhibit specificity, meaning that certain reactants are only acted upon by specific enzymes, ensuring that biochemical pathways proceed efficiently and effectively. Additionally, many of these reactants are derived from nutrients obtained through diet or synthesis within the organism.