Its B, because A is supposed to be a carbohydrate and D says lipids are inorganic but they are organic. Last C, Catalyst speeds up chemical reactions not lipids. So B is the right answer they make up part of the cell and cell membrane.
The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body
Answer:
Enzymes are catalysts for chemical reactions in living things. Enzymes, like other catalysts, lower the activation energy and increase the rate of chemical reac- tions. ... This means that enzymes do not change the direction of a reaction— they just change the amount of time needed for equilibrium to be reached.
Explanation:
The is the tundra because <span>The soil in any tundra is all permafrost. Permafrost is soil that has been frozen. Permafrost can form in any place in the world the soil just has to be moist and the conditions must be cold.</span>
