Chordates, or members of phylum Chordata, possess a backbone.
Answer:
1. Signaling molecule
2. Signaling receptors
Explanation:
Hormones, growth factors, neurotransmitters, etc. serve the function of signaling molecules for cells. These molecules are released by one cell and bind to the receptors present on/in the target cells to elicit the desired response. Thereby, the signaling molecules serve in cell-cell communication.
For example, insulin hormone synthesized and released from beta cells of pancreas binds to its cell surface receptors present on the surfaces of liver cells and muscle cells to stimulate the uptake of the glucose from the blood.
Likewise, neurotransmitters released from the presynaptic neuron bind to receptors present on the membrane of postsynaptic neuron and serve to carry the nerve impulse to the postsynaptic neuron.
Answer:
The digestive system
Explanation:
Because the food gets dissolve in the digestive system. After it finished dissolving, the body must elimenate it by using the bathroom.
Answer:
Lysosome - Janitor, cleans up food particles, waste, and dead cell parts.
Nucleus - Principal, contains DNA and is the control center for the cell.
Cell Membrane - Basically the walls of the school building
Ribosomes - Cafeteria Workers, creates "food" by combining amino acids.
Hope this helps!
