CELL PHYSIOLOGY PRACTICE QUESTIONS AND ANSWERS GRADED A+

CELL PHYSIOLOGY PRACTICE QUESTIONS AND ANSWERS GRADED A+ How big is a typical human cell and can you see it with the naked eye? - Correct Answer ️️ -10 um and no Why is a cell roughly 10 um? - Correct Answer ️️ -This size allows the cell to effectively communicate with its environment through its plasma membrane. What would happen if a cell got bigger than 10um? - Correct Answer ️️ -cell's membrane would not be able to efficiently communicate with its environment due to the increase in size. What are the 2 major classes of cells? - Correct Answer ️️ -Solar cells & gametes. What is the lipid to protein ratio (in%) that makes up a cell membrane and how does this relate to weight? - Correct Answer ️️ -98% lipid 2% protein but the weight is 50/50 because proteins are big heavy molecules What type of fluid does the e (extracellular) face of the cell face? - Correct Answer ️️ - Interstitial fluid What type of fluid does the p face of the cell face? - Correct Answer ️️ -Intracellular fluid and p is referring to the cytoplasm or inside of the cell What can sugars in the extracellular portion be attached to? - Correct Answer ️️ - Phospholipids or proteins If a sugar is attached to a lipid what is it called? - Correct Answer ️️ -Glycolipids If a sugar is attached to a protein what is it called? - Correct Answer ️️ -Glycoprotein What are glycolipids and glycoproteins collectively referred to as? - Correct Answer ️️ - Glycoxyl What are 2 major cell classes? - Correct Answer ️️ -body cells and sex cells (gametes) Are gametes haploid or diploid? - Correct Answer ️️ -haploid (1n) Are body cells haploid or diploid? - Correct Answer ️️ -diploid (2n) What is a composite cell? - Correct Answer ️️ -typical cell that contains all components that a cell could potentially have If RBCs don't have a nucleus or organelles how do they stay alive? - Correct Answer ️️ -Glycolysis White blood cells (B cells) have a lot of rough ER in their nucleus, why is this? - Correct Answer ️️ -they make a lot of proteins and supply those to other cells What 3 proteins make up the cytoskeleton & what is their job? - Correct Answer ️️ - microfilaments (actin filaments), intermediate filaments, microtubules and their job is to support the body of the cell & they give the cell their shape Are cilia and microglia projections of the cell or project off the cell? - Correct Answer ️️ -Projections of the cell or extensions of the cell What is the smooth ER responsible for? - Correct Answer ️️ -making lipids and breaking down toxins What is the ER responsible for? - Correct Answer ️️ -Making & Moving protiens (secretion) when looking at a cell membrane, what direction will the e and p face always be? - Correct Answer ️️ -E- top P-bottom T or F? Glycoproteins & glycolipids are only found the the e face of the cell? - Correct Answer ️️ -T What are the identify markers of the cell, found on the e face of their cell membranes? - Correct Answer ️️ -Glycolipids and glycoproteins, these are very specific to the cell Why is cholesterol a critical component of the plasma membrane? - Correct Answer ️️ -Support and stabilization Each protein that goes through the membrane has what 2 kinds of faces? - Correct Answer ️️ -E face Moya T & P face moya T What does the E face moya T interact with? - Correct Answer ️️ -Ligands and carbs What does the P face moya T interact with? - Correct Answer ️️ -Enzymes What are identify markers on the cell membrane and what is their significance? - Correct Answer ️️ -Glycolipids & glycoproteins, they serve as identity markers of the cell What percent of the 98% plasma lipid membrane are phospholipids and