<span>One of the key ideas in biology is that structure always impacts function. For one, a neuron has a long axon because it helps to transmit signals from cell to cell, allowing the nervous system to function. Secondly, epithelial cells are long and thin, which allows them to cover numerous organs in the body. Finally, muscle cells are more rod-shaped and are comprised of contractile units which allows them to withstand the wear and tear of muscle movement.</span>
Answer:
The Nucleus
Explanation:
The nucleus is the most important part of a cell. It is the “information” headquarters and is in charge of the cellular activities. It contains the information that will tell the cell what to do, what to make, and when to divide. A nucleus is a small and very powerful part of a cell.
Answer:
carbon dioxide controls temperature because the carbon dioxide molecules in the air absorb infrared radiation. The carbon dioxide and other gases in the atmosphere are virtually transparent to the visible radiation that delivers the sun's energy to the earth
Explanation:
Answer:
B. often use tube feet to move around in their environment
Explanation:
Tube feet are tiny tubular projections of echinoderms on the underside (oral side). They are a member of the echinoderm water vascular system.
Tubular feet are used for feeding, breathing and shifting. They are arranged around the sides, in grooves. They work by hydraulic pressure. They are used to transfer food in the centre to the oral mouth, and may stick to surfaces. Tube feet allow certain animals to stick and travel slowly to the ocean floor. for example starfish uses tube feet for the above functions.
Hence, the correct option is B.
