the answer for each is a cell part

what is the powerhouse of a cell & site of ATP production?

what supports the shape of the entire cell

what is involved in muscle contraction in larger organisms

The powerhouse of a cell and the site of ATP production is the mitochondria. To find the answer to this question, you can refer to your biology textbook, search online scientific resources, or consult credible educational websites. Understanding the structure and functions of different organelles within the cell will help you identify the mitochondria as the specific organelle responsible for energy production.

The structure that supports the shape of the entire cell is the cytoskeleton. It consists of various protein filaments, including microtubules, microfilaments, and intermediate filaments. You can find this information in biology textbooks, online resources, or educational websites that cover cell structure and function.

Muscle contraction in larger organisms involves the interaction between actin and myosin filaments. Actin and myosin are proteins found in muscle cells that work together to generate the force required for muscle contraction. To find the answer to this question, you can refer to biology textbooks or search for information on muscle physiology and the sliding filament theory, which explains the mechanism of muscle contraction. Additionally, trusted educational websites or scientific resources will provide detailed information on this topic.