Answer and Explanation:
Yes, a single molecule can work through all three effector route. Cells commonly lead independent lives, and they might influence and communicate with other cells for sexual mating. For example, yeast cells communicate with one another for mating. On the other hand, animal cells communicate by different kinds of signal molecules. These molecules include amino acids, nucleotides, proteins, small peptides, retinoid, and derivatives of fatty acids and also includes dissolved gases such as carbon monoxide and nitric oxide. In the extracellular spaces, most signal molecules are secreted by the signaling cells. Some signal molecules are exposed to the extracellular spaces, while others are released by diffusion. Target cells respond by a specific protein called receptors. Receptors bind the signal molecules and start response in the target cell. On the surface of target cells, receptors are transmembrane proteins. When receptors bind extracellular signal molecules, they stimulated and produced a flow of intracellular signals that initiate the cells' behavior.
5.0 x 10² KJ
From the question given above,
A snickers® candy bar contains
280 calories. Fat content = 120 calories
1 calorie = 4.184 j
120 calories = 120 x 4,184 =
502.08j = 5.0 x 10² KJ
The energy of the fat content is 5.0
x 10² KJ.
That body parts are called "Homologous Organs" which are similar in origin & structure.
Hope this helps!
Answer:when present - positive
When absent - negative
