Well maybe that species evolved over time to get faster and be more durable because of the need to run away from lions and other prey.
The answer A. DNA in the nucleus controls all cell activity.
Answer:
"Energy flows in one direction, matter recycles."
Explanation:
Matter "returns" to the environment by the deutucators. Energy comes from the sun and is transmitted to higher trophic structures.
Microtubules are composed of two different types of tubulin. Namely, these simpler units are called alpha-tubulin and beta-tubulin. These subunits are essentially tightly bound together to form heterodimers. In the microtubule structure, they are arranged in an organized manner in such a way that they in parallel direction with protofilaments.