Mmsc490 exam - Study guides, Class notes & Summaries

MMSC490 Exam 1 questions and answers

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...

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

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 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 ...

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

MMSC490 Final Exam Questions and Answers

MMSC490 Practice Exam 1

MMSC490 Final Exam Questions with 100% Answers Humans possess about .............. different cell types. 100 200 500 1,000 - Answer️️ -200 In adult organisms, cell death must be balanced by cell growth. differentiation. renewal. migration. - Answer️️ -renewal The distinct series of changes that characterizes programmed cell death is called necrosis. apoptosis. sepsis. execution. - Answer️️ -apoptosis Cells that die as the result of acute injury undergo lysis. sepsis...