Can someone help me with these 15bio Q's?

Out of 200, I can't figure out these 15. Can anyone help me out with any??











The major cation in cytoplasm that is essential for membrane function is


a.sodium


b.potassium


c.calcium


d.magnesium


e.iron


f. all of the above








The major cation in extracellular fluid that is essential for normal membrane function is


a.Sodium


b.potassium


c.calcium


d.magnesium


e.iron


f. all of the above








All of the following are functions of the plasma membrane except


a.cell recognition


b.communication


c.cell adhesion


d.sensitivity


e.all are membrane functions


f. all of the above














Some cells are multinucleolated. What characteristics would cause this trait in a cell?


a.increased protein production


b.decreased protein production


c.increased DNA production


d.inceased lipid production


e. all of the above














Which of the following consist of a network of intracellular membranes with attached ribosomes?


a.rough endoplasmic reticulum


b.smooth endoplasmic reticulum


c.mitochondria


d.nucleoli


e.Golgi apparatus


f. all of the above











When activated, lysosomes function in


a.formation of new cell membranes


b.synthesis of proteins


c.digestion of foreign material


d.synthesis of lipids


e.cell division


f. all of the above














What is the goal of PASSIVE transport across the membrane?


a.Concentration


b.Equilibrium


c.Osmosis


d.Filtration


e. all of the above














What is tonicity?


a.Effect of osmolarity on the cell


b.Effect of osmotic pressure on the cell


c.Effect of diffusion on the cell


d.None of the above











Which of the following is an isotonic solution?


a.Physiological saline


b.0.9% saline


c.Osmotically inactive


d.All of the above

















The genetic code is a triplet code. What does this mean?


a.Nucleotides are made of 3 amino acids


b.Nucleotides are read in groups of three


c.There are only 3 amino acids


d.The amino acids are read in groups of three


e. all of the above











DNA contains a coding strand and a template strand. Which one is copied during transcription?


a.Neither


b.Both


c.Coding strand


d.Template strand


e. all of the above




















If all of the ribosomes in a cell were destroyed what would cease to happen?


a.Translation


b.Protein synthesis


c.Linking of codons and anti-codons


d.All of the above




















If the cell could no longer make tRNA what part of transcription and translation would be affected?


a.Post-transcriptional processing


b.Post-translational processing


c.Protein synthesis


d.Transcription


e. all of the above








If post-translational processing could not take place what would be the result?


a.Proteins would not fold correctly


b.Proteins would not function correctly


c.Proteins would unable to be activated


d.All of the above





There are several types of mutations that can take place in DNA. Which is the most likely to cause a problem?


a.Point mutation


b.Deletions


c.Additions


d.Frame shift


e. all of the above

Can someone help me with these 15bio Q's?
dont know all.. must admit, the questions are a bit odd.





Which of the following consist of a network of intracellular membranes with attached ribosomes?


a.rough endoplasmic reticulum





When activated, lysosomes function in


c.digestion of foreign material








What is the goal of PASSIVE transport across the membrane?


b.Equilibrium





Which of the following is an isotonic solution?


a.Physiological saline


to be honest, something is called isotonic if you are comparing 2 things..

















The genetic code is a triplet code. What does this mean?


b.Nucleotides are read in groups of three





DNA contains a coding strand and a template strand. Which one is copied during transcription?


c.Coding strand


d.Template strand





If all of the ribosomes in a cell were destroyed what would cease to happen?


a.Translation





If the cell could no longer make tRNA what part of transcription and translation would be affected?


c.Protein synthesis





If post-translational processing could not take place what would be the result?


b.Proteins would not function correctly


but this may not be true for all proteins, since not all of them are modified!!





There are several types of mutations that can take place in DNA. Which is the most likely to cause a problem?


d.Frame shift