Mmsc490 exam - Study guides, Class notes & Summaries

The plasma membrane barrier to passive diffusion is primarily a function of the membrane's a. phospholipids b. cholesterol c. proteins d. glycoprotein - ️️a mammalian erythrocytes (red blood cells) are particularly useful for studies of the plasma membrane because.. a. they have few peripheral proteins b. they have only one membrane, the plasma membrane c. their plasma membrane is not associated with a cytoskeleton d. their plasma membrane contains no cholesterol - ️️b Gor...

Which eukaryotic DNA polymerase replicates the lagging strand in the 3ʹ to 5ʹ direction? a. α b. γ c. δ d. None of the above; the lagging strand is replicated in the 5ʹ to 3ʹ direction. correct answers d. None of the above; the lagging strand is replicated in the 5ʹ to 3ʹ direction. DNA polymerases can synthesize DNA: a. de novo, by catalyzing the polymerization of free dNTPs. b. by adding dNTPs to complementary dNTPs on a single-stranded DNA. c. by adding dNTPs to a hyd...

During E. coli DNA replication, all newly synthesized or nascent DNA fragments must have one of the following characteristics a. a 5' hydroxyl and 3' triphosphate b. a 5' triphosphate and 3' monophosphate c. 5' monophosphate and 3' hydroxyl d. 5' triphosphate and 3' hydroxyl correct answers d. 5' triphosphate and 3' hydroxyl Among the 3 DNA polymerases in E. coli, DNA polymerases I and III differ in a number of properties that make DNA polymerase III a more suitable enzyme for c...

Which eukaryotic DNA polymerase replicates the lagging strand in the 3ʹ to 5ʹ direction? a. α b. γ c. δ d. None of the above; the lagging strand is replicated in the 5ʹ to 3ʹ direction. correct answers d. None of the above; the lagging strand is replicated in the 5ʹ to 3ʹ direction. DNA polymerases can synthesize DNA: a. de novo, by catalyzing the polymerization of free dNTPs. b. by adding dNTPs to complementary dNTPs on a single-stranded DNA. c. by adding dNTPs to a hyd...

The length of time it takes for the cells labeled during DNA synthesis to begin to enter mitosis is a good estimate of the length of the _______ phase(s). a. G1 b. S c. G2 d. M correct answers c. G2 In a typical cycling mammalian cell, _______ of the cell cycle is spent in interphase. a. 99% b. 95% c. 75% d. 50% correct answers b. 95% The number of cells in the different phases of a population can be determined most easily by using a(n) _______ to measure the amount of DNA per ce...

The simplicity and clarity of Caenorhabditis elegans allowed researchers to - ️️Identify the genes in differentiation of each cell type The diffraction limited resolving power of a standard light microscope is approximately - ️️0.2 Om Chloroplasts are thought to have originated from endosymbiosis of ___ by large host cell. - ️️Photosynthetic eubacteria such as cyanobacteria The eukaryotic nucleus contains ___ DNA molecule (s). - ️️Multiple linear The source of the atm...

MMSC490 Exam 1 Questions and Answers | Verified & Updated The feature that most clearly distinguishes eukaryotes from prokaryotes is the presence of..... in eukaryotic cells - Answer ️️ -a nucleus Cytoplasmic organelles are - Answer ️️ -absent in prokaryotic cells and present in eukaryotic cells The eukaryotic nucleus contains.... DNA molecules - Answer ️️ -multiple linear Stanley miller applied electric sparks to a reducing atmosphere of methane, ammonia, water, hydrogen, an...

Mmsc490 Exam Questions with Complete Solutions The feature that most clearly distinguishes eukaryotes from prokaryotes is the presence of ......... in eukaryotic cells oxidative phosphorylation, ribosomes, a nucleus, RNA molecules - Answer-A nucleus Cytoplasmic organelles are *present in prokaryotic cells and absent in eukaryotic cells . *absent in prokaryotic cells and present in eukaryotic cells . *absent in both prokaryotic and eukaryotic cells . *present in both prokaryotic and euk...

The plasma membrane barrier to passive diffusion is primarily a function of the membrane's a. phospholipids b. cholesterol c. proteins d. glycoprotein correct answers a mammalian erythrocytes (red blood cells) are particularly useful for studies of the plasma membrane because.. a. they have few peripheral proteins b. they have only one membrane, the plasma membrane c. their plasma membrane is not associated with a cytoskeleton d. their plasma membrane contains no cholesterol correct ...