Question: Q: What substances serve as catalysts in most of the biochemical reactions that take place in organisms? Read this paragraph and choose the correct option from the provided answers: Enzymes are involved in most of the biochemical reactions that take place in organisms. About 4,000 such reactions are known to be catalyzed by enzymes, but the number may be even higher. Enzymes allow reactions to occur at the rate necessary for life. Choices: - hormones - carbohydrates - iseotrops - enzymes A:
Answer: enzymes

Question: Q: Dietary proteins are broken down into amino acids during what process? Read this paragraph and choose the correct option from the provided answers: Proteins in the diet are necessary for life. Dietary proteins are broken down into their component amino acids when food is digested. Cells can then use the components to build new proteins. Humans are able to synthesize all but eight of the twenty common amino acids. These eight amino acids, called essential amino acids , must be consumed in foods. Like dietary carbohydrates and lipids, dietary proteins can also be broken down to provide cells with energy. Choices: - accumulation - filtration - photosynthesis - digestion A:
Answer: digestion

Question: Q: What is the term for chordates with a vertebral column and endoskeleton of cartilage and bone? Read this paragraph and choose the correct option from the provided answers: Vertebrates are chordates with a vertebral column and endoskeleton of cartilage and bone. Vertebrates also have several organ systems. Choices: - am - insect - mammel - vertebrate A:
Answer:
vertebrate