Answer: C) As cells become more numerous, the amount of required growth factors and nutrients per cell becomes insufficient to allow for cell growth.
Explanation:
Growth factors are proteins that stimulate cell division.Two of the most important internal factors are kinases and cyclins. In most mammal cells stop dividing once they touch other cells this means that when a cell population reaches a certain density, the amount of required growth factors and nutrients available to each cell becomes insufficient to allow continued cell growth.
Answer:
ATP donates energy through C phospho anhydride bond hydrolysis.
Explanation:
ATP or adenosine triphosphate is an energy rich compound which contain 3 phosphate moiety that are linked by 2 high energy phospho anhydride bonds.
The hydrolysis of phosphoanhydride bonds releases high amount of free energy which is used by cellular system of our body to exhibit various cellular,biological and physiological functions.
Some anoxygenic photosynthetic bacteria are able to use H2S or hydrogen sulfide as an electron donor.
Opportunistic pathogens only cause infection under certain circumstances eg in immune compromised hosts.
Answer:
Hotter
Explanation:
Upon turning on the lava lamp's light, the liquid at the bottom of the container, which is denser, will heat and expand. As the liquid expands, the volume of the liquid increases, and its density decreases.
Answer:
inorganic
Explanation:
molecule with formula O 3
Diffusion has a major part in this. It has proteins embedded in it that allow molecules to diffuse in and out of the cell up and down its concentration gradient.
