Which of the following statements most directly supports the claim that different species of organisms use different metabolic strategies to meet their energy requirements for growth, reproduction, and homeostasis?
- A During cold periods pond-dwelling animals can increase the number of unsaturated fatty acids in their cell membranes while some plants make antifreeze proteins to prevent ice crystal formation in tissues
- B Bacteria lack introns while many eukaryotic genes contain many of these intervening sequences.
- C Carnivores have more teeth that are specialized for ripping food while herbivores have more teeth that are specialized for grinding food.
- D Plants generally use starch molecules for storage while animals use glycogen and fats for storage.
