24.The cell cycle's two main stages are called Aanaphase and telophase B.mitosis and interphase C.metaphase and prophase D.cytokinesis and anaphase E.None of the above 25.Meiosis is different from mitosis because meiosis produces A.consistent genetic makeup of all gametes. B.larger daughter cells. C.two gametes for every original parent cell. D.cells with halfthe number of chromosomes E.fast speed of cell division 26.A 56-year-old man who drinks a six pack of beer a day,with higher alcoholic intake on weekends,holidays and"special days,"presents to the internal medicine clinic.He has an abnormal plasma lipoprotein profile.It is known that erythrocyte fluidity is altered in liver disease.Which one of the following would inerease membrane cytes of this patients liver A Restriction of rotational movement of proteins and lipids in the membrane B.Transbilayer movement of phospholipids in the plasma membrane C.Increased cholesterol/phospholipids ratio in the plasma membrane D.Binding of integral membrane proteins with E.Bindingofan anboyto-acee 27.The asymmetry of the cell membrane is established primarily by which one of the following? A.Membrane synthesis in the endoplasmic reticulum B.Membrane modification in the Golgi apparatus C.Presence of carbohydrates on the cytoplasmie surface D.The distribution of cholestero E.Flipping proteins between the leaflets of the lipid bilayer("fip-flop") 28.A44-year-old African American woman calls 911.When the MedAct unit arrives they find a patient with acute obrath an when A pysicl exinon reve pulse 15omma 60-100). ate 42(no mal15-20) s of acce ssory muscle use hing up mu decreased breath sounds with wheezing on inspiration and expiration.The patient has taken her prescribed medications with no relief of symptoms prior to her 911 call.Her current medication is albuterol,a moderately selective B2-receptor agonist.Which one of the following is true regarding those receptors? A.They possess a single hydrophobic transmembrane segment in the form of an a-helix B.They c an activate rionchannels C.They possesan ligand- binding domain D.They posses intrinsic enzyme activity E.They are arranged so that both the amino-and the carboxy-terminals are located intracellularly24．The cell cycle's two main stages are called A. anaphase and telophase B. mitosis and interphase C. metaphase and prophase D. cytokinesis and anaphase E. None of the above 25. Meiosis is different from mitosis because meiosis produces A. consistent genetic makeup of all gametes. B. larger daughter cells. C. two gametes for every original parent cell. D. cells with half the number of chromosomes. E. fast speed of cell division 26. A 56-year-old man who drinks a six pack of beer a day , with higher alcoholic intake on weekends , holidays , and “special days ,” presents to the internal medicine clinic. He has an abnormal plasma lipoprotein profile. It is known that erythrocyte fluidity is altered in liver disease . Which one of the following would increase membrane fluidity in the hepatocytes of this patient’s liver ? A.Restriction of rotational movement of proteins and lipids in the membrane B. Transbilayer movement of phospholipids in the plasma membrane C .Increased cholesterol/phospholipids ratio in the plasma membrane D. Binding of integral membrane proteins with cytoskeletal elements E. Binding of an antibody to a cell-surface receptor 27. The asymmetry of the cell membrane is established primarily by which one of the following? A. Membrane synthesis in the endoplasmic reticulum B. Membrane modification in the Golgi apparatus C. Presence of carbohydrates on the cytoplasmic surface D. The distribution of cholesterol E. Flipping proteins between the leaflets of the lipid bilayer (“flip-flop”) 28. A 44-year-old African American woman calls 911. When the MedAct unit arrives they find a patient with acute shortness of breath and audible wheezing. A physical examination reveals pulse 115(normal 60-100)， respiratory rate 42 (normal 15-20) with signs of accessory muscle use. She is coughing up mucus. Auscultation reveals decreased breath sounds with wheezing on inspiration and expiration. The patient has taken her prescribed medications with no relief of symptoms prior to her 911 call. Her current medication is albuterol, a moderately selective β2-receptor agonist. Which one of the following is true regarding those receptors? A. They possess a single hydrophobic transmembrane segment in the form of an α-helix B. They can activate plasma membrane-bound enzymes or ion channels C. They posses an intracellular ligand-binding domain D. They posses intrinsic enzyme activity E. They are arranged so that both the amino- and the carboxy-terminals are located intracellularly