How can infectious and non infectious diseases affect personal health

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these

Jason, a dog breeder, decides to mate a poodle with a golden labrador retriever. he wants to get puppies with the curly hair of the poodle and the color of the labrador. what concept is shown in this example? question 6 options: artificial selection adaptation evolution natural selection