i. Nucleolus : small body of RNA and proteins located inside cell nucleus functioning in the production of RNA products. j. Nucleus : oval structure located inside the cell containing genetic information (DNA) that regulates cellular function. k. Ribosomes : organelles that are the site of protein synthesis. l. Rough endoplasmic reticulum : organelle composed of membrane-enclosed stacks of membranes continuous with the nuclear envelope and studded with ribosomes functioning in protein synthesis. m. Smooth endoplasmic reticulum : organelle composed of membrane-enclosed stacks of membranes continuous with the nuclear envelope and the site for lipid and carbohydrate metabolism as well as detoxification. The smooth endoplasmic reticulum lacks ribosomes. Dr. P. Garcia Biology 2101 Spring 2019
3. Using a lab model of a cell membrane, label the correct term and description with the cell membrane structure: a. Cholesterol : four-ringed lipid providing structural integrity and fluidity to cell membranes. b. Fatty acid tails ( nonpolar ): repeating chains of carbon and hydrogens bound with the phosphate head of phospholipids forming plasma (cell) membrane. c. Glycolipid : sugar bound with lipid component of plasma membrane functioning in cell recognition.