Peluche free essay sample

After carefully reviewing Figure 6. 8, briefly describe the structure and function of the nucleus, the mitochondrion, the chloroplast, and the endoplasmic reticulum. Nucleus- nonmembranous structure involved in production of ribosomes; a nucleus has one or more nuclueoli Mitochondrion- organelle where cellular respiration occurs and most ATP is generated Chloroplast- photosynthetic organelle; converts energy of sunlight to chemical energy stored in sugar molecules Endoplasmic reticulum- network of membranous sacs and tubes; active in membrane synthesis and other synthetic and metabolic processes 2. Imagine an elongated cell (such as a nerve cell) that measures 125 1 1 arbitrary units. Predict how its surface- to- volume ratio would compare with those in Figure 6. 7. Then calculate the ratio and check your prediction. This cell would have the same volume as the cells in columns 2 and 3 but proportionally more surface -area than that in column 2 and less than that in column 3. 125 x 125 x 125 x 125 x 1 x 1 x 502. The surface-to-volume ratio equals 502 divided by a volume of 125, or 4. We will write a custom essay sample on Peluche or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page 0. 3. Explain how the compartmental organization of a eukaryotic cell contributes to its biochemical functioning. Cells are divided into several compartments, each with a characteristic structure, biochemical composition, and function (see illustration). These compartments are called  organelles. They are delimited by membranes composed of  phospholipid  bilayers and a number of proteins specialized for each type of organelle. Peluche free essay sample Eukaryotic  cells  have  internal  membranes  that  compartmentalize  their  functions 1. After carefully reviewing Figure 6. 8, briefly describe the structure and function of the nucleus, the mitochondrion, the chloroplast, and the endoplasmic reticulum. Nucleus- nonmembranous structure involved in production of ribosomes; a nucleus has one or more nuclueoli Mitochondrion- organelle where cellular respiration occurs and most ATP is generated Chloroplast- photosynthetic organelle; converts energy of sunlight to chemical energy stored in sugar molecules Endoplasmic reticulum- network of membranous sacs and tubes; active in membrane synthesis and other synthetic and metabolic processes 2. Imagine an elongated cell (such as a nerve cell) that measures 125 1 1 arbitrary units. Predict how its surface- to- volume ratio would compare with those in Figure 6. 7. Then calculate the ratio and check your prediction. This cell would have the same volume as the cells in columns 2 and 3 but proportionally more surface -area than that in column 2 and less than that in column 3. 125 x 125 x 125 x 125 x 1 x 1 x 502. We will write a custom essay sample on Peluche or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The surface-to-volume ratio equals 502 divided by a volume of 125, or 4. 0. 3. Explain how the compartmental organization of a eukaryotic cell contributes to its biochemical functioning. Cells are divided into several compartments, each with a characteristic structure, biochemical composition, and function (see illustration). These compartments are called  organelles. They are delimited by membranes composed of  phospholipid  bilayers and a number of proteins specialized for each type of organelle.