Valence is the number of electrons an atom must gain or lose in order to consummate its outer energy level or have a stable octet in its outer shell
Answer:
Lysosomes
Explanation:
Lysosomes are the organelles that have many digestive enzymes such as those for digestion of lipids and proteins. Most of the vesicles that bring substances into the cells by phagocytosis or endocytosis fuse with lysosomes. For example, the vesicles formed during receptor-mediated endocytosis fuse with lysosomes so that LDL particles and other substances are digested by the enzymes of lysosomes. The digested products then leave lysosomes so that cells can use them.
Answer:
Either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
In an oligopoly type of market, there are only few producers whom dominate the market. This is the market type wherein there are only small number of firms that control the majority of the market share. The opposite to Perfect Competition, wherein there are unlimited number of producers. In an oligopoly, since there are only a few numbers competitors, each firm is likely to be aware of each other's action.
Epithelial tissue <span>covers the body surface and forms the lining for most internal cavities. </span>
