A primary function of carbohydrates attached to the glycoproteins and glycolipids of animal cell membranes is to mediate cell-cell recognition. Cell-cell recognition refers to the communication between cells. specific cellular adhesion molecules enable this active process. This process leads to cell organization: <span>some cells adhere to each other and others are excluded.</span>
Answer:
The answer is a)
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In respiration oxygen reacts with glucose to produce carbon dioxide and water (the things we exhale)
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(D) Nonpoint source pollution is difficult to regulate, because its source is difficult to track.
Your answer is the second one geologic dating
