Frnsc 100 exam 2 - Study guides, Class notes & Summaries

FRNSC 100 Exam 2 Verified Questions And Answers With Verified Study Solutions The maximum magnification that can generally be achieved with a light microscope is about ANS 1200x Trichomes are a type of ANS plant hairs Ribs and hackle marks are characteristics found in ANS Broken glass Which of the following is not one of the three basic types of rock? ANS atmospheric What name was given to the murders that were discussed in the article you read about the Soil Sleuth? ANS World...

PSU FRNSC 100 Exam 2 Questions And Answers Rated A+ What does it mean to extract a chemical? ANS To purify a substance by washing it with solvents to remove unwanted companion chemicals Sometimes a fire debris analyst will try to smell the odor of a burned sample when trying to find the presence of an ignitable liquid. ANS True What is useful about mixtures? ANS They can be separated into their individual components What does "GC" stand for? ANS Gas chromatograph

FRNSC 420 - EXAM 2-Questions with Correct Answers/ Verified/ 100% Pass

FRNSC 421W - EXAM 2-Questions with Correct Answers/ Verified/ 100% Pass

FRNSC 420 - EXAM 2 PRACTICE QUESTIONS AND ANSWERS (100% PASS) nucleosome assembly/reassembly after replication - Answer️️ -- old H3-H4 tetramers remain bound to one of two daughter duplexes at random - old H2A-H2B dimers dissociate and compete to associate with tetramers - DNA sliding clamps mark replicating DNA and recruit chromosome assembly factors (CAFs) as chaperones - CAFs free nucleosomes and escort to newly synthesized DNA; NAP-1 escorts new/old H2A-H2B dimers, CAF-1 escorts ...

FRNSC 421W - EXAM 1 PRACTICE QUESTIONS AND ANSWERS (100% PASS) RFLP - Answer️️ -restriction fragment length polymorphism - DNA digested by restriction enzymes at repeat sequences, yields different fragment lengths for different people - Gel electrophoresis to separate fragments by size, MW ladder for reference - Southern blotting to physically transfer DNA to membrane - Radioactively labeled probe hybridizes with immobilized DNA on membrane - Exposure to X-ray film yields carbon copy...

FRNSC 420 - EXAM 3 PRACTICE QUESTIONS AND ANSWERS (100% PASS) electrophoretic mobility shift assay (EMSA) - Answer️️ -demonstrates if a protein is bound to DNA - fragment is placed in non-denaturing polyacrylamide gel (native PAG) to keep protein associated to DNA - DNA/protein complex moves much slower in the gel due to added molecular weight (an electrophoretic mobility shift) - will appear higher in the lane compared to free DNA - migration depends on mobility of the protein; dif...

FRNSC 420 - EXAM 4 PRACTICE QUESTIONS AND ANSWERS (100% PASS) positive allosteric regulation - Answer️️ -binding of a regulatory molecule to an enzyme induces a conformation change, increasing the enzyme's affinity for a substrate - proteins are activators = enhance RNAP binding and/or induce conformational change, can change binding constant (KB) or rate constant (kf), lowers activation energies negative allosteric regulation - Answer️️ -bound regulatory molecule must release ...

FRNSC 421W - EXAM 2 PRACTICE QUESTIONS AND ANSWERS (100% VERIFIED AND UPDATED) DNA mixtures - Answer️️ -mixed biological fluids/cells of any type - saliva & skin cells - blood & semen - urine from two sources - sexual assault cases often contain female epithelial/white blood cells & male sperm, epithelial/white blood cells characteristics of sperm - Answer️️ -- condensed nucleus in the head, encapsulated by acrosome - mid-piece with ~50 (range from 10-1300) copies of mitochond...

FRNSC 421 - EXAM 3 PRACTICE QUESTIONS AND ANSWERS (100% PASS) lineage markers - Answer️️ -useful for assisting with the identification of related individuals separated by generational events - Y DNA paternally inherited - mtDNA maternally inherited Thomas Jefferson case - Answer️️ -Y-STR analysis on descendent of Eston Hemmings to determine if Thomas Jefferson had an affair with his slave Sally Hemmings - showed that Eston is related to the Jefferson family, cannot conclusively s...