Bio 181 Module 3: Self Check well answered to pass

Bio 181 Module 3: Self CheckActive transport uses ATP to move components in parallel with their concentration gradient, that is: from a high concentration to a low concentration. T/F - correct answer False It is a simple matter (i.e., thermodynamically favorable) for a vesicle to form from the endoplasmic reticulum. T/F - correct answer Fasle Explain how the vesicles are carried from the Golgi apparatus to the plasma membrane. - correct answer 1. Proteins are synthesized by ribosomes and enter the RER. 2. Vesicles bud off from the RER and carry proteins to the Golgi apparatus. 3. The Golgi apparatus modifies proteins. 4. The vesicles bud off from the Golgi and carry modified proteins to the plasma membrane. Cholesterol is _______ to have in biological membranes. - correct answer good Facilitated diffusion uses a channel protein to let components move down their concentration gradient. T/F - correct answer True What is the difference between a triglyceride and a phospholipid? - correct answer Triglycerides have glycerol and three fatty acids, which makes them fats. Phospholipids are not fats, since they have glycerol, two fatty acids and phosphorus. What is the difference between a single-pass transmembrane protein and a 7-pass transmembrane protein? - correct answer single-pass will pass through the plasma membrane once, a 7-pass, 7 times. Explain the evolutionary origin of mitochondria. - correct answer Presumably, mitochondria evolved by way of endosymbiosis. A PPE cell was sick/weakend and attempted to eat another cell PPP that was good at creating ATP. The PPP created the extra ATP and gave it to the PPE. The health of the PPE improved and it kept the PPP within to create ATP.