Stranded dna procedure - Study guides, Class notes & Summaries

In the DNA isolation procedure, why did we add chelex-resin to the tube? - correct answer The chelex-resin absorbs ions that inhibit the function of Taq Polymerase. Write down the components of the master mix that were use in the PCR amplification of STRs. - correct answer - Buffer - Loading Dye - Deoxynucleotides - 3 pairs of primers - Taq polymerase - Water What are the 3 main steps in PCR? Explain each step briefly. - correct answer 1. Denaturing - melt DNA from double-strand...

Straighterline Microbiology Final Exam Review Questions With 100% Correct Answers Who of the following developed a set of criteria that could be used to establish a causative link between a particular microorganism and a particular disease? Select one: a. Fracastoro b. Koch c. Pasteur d. Lister b Which of the following distinguish the field of microbiology from other fields of biology? Select one: a. The size of the organism studied. b. The techniques used to study organisms regard...

Molecular Diagnostics Chapter 4 Elaborates Exam [100% PASS] /verified/ gel electrophoresis *Ans* Procedure used to separate and analyze DNA fragments by placing a mixture of DNA fragments at one end of a porous gel and applying an electrical voltage to the gel Is the anode positive or negative? What about the cathode? *Ans* Positive, negative DNA/RNA are positively/negatively charged? They migrate towards anode or cathode? *Ans* negatively, anode Do large or small size DNA fragments m...

What can be done at a scene of a mysterious death to help reconstruct what happened? - AnswerCollect evidence, interview, examine, sketch, photograph (others: find samples of DNA, see if there were any witnesses, cause of death, weapons, blood spatters, wounds on victim, violence of death, finger prints, shoe prints, hair, clothing How do the clues found at a scene of a mysterious death help investigators determine what might have occurred and help identify or exonerate potential suspects? -...

Mark scheme instructions to examiners 1. General The mark scheme for each question shows: • the marks available for each part of the question • the total marks available for the question • the typical answer or answers which are expected • Extra information to help the examiner make his or her judgement and help to delineate what is acceptable or not worthy of credit or, in discursive answers, to give an overview of the area in which a mark or marks may be awarded. ...

Consider the table below where a child and a possible father (PF) share the listed paternity indices for each locus listed (LOC-A1, LOC-B2, LOC-C3, LOC-D4). Locus Tested PF Child Paternity Index LOC-A1 3 2/3 2.18 LOC-B2 7/5 5 0.798 LOC-C3 15/17 9/17 5.21 LOC-D4 12 12 1.37 Based on the data presented in the table, what is the combined paternity index, CPI, from the loci tested: LOC-A1, LOC-B2, LOC-C3 and LOC-D4? 12.42 9.558 15.56 2.38 - ANSWER 12.42 ( CPI is calculated by multiplying ...

Biology B: Exam 3 Questions and Answers Already Passed In pea plants, red flowers and round pollen are known to be recessive traits. In a dihybrid cross experiment, lots of plants with red flowers and round pollen are found in the F2 generation. How is this possible? The genes for flower color and pollen shape are linked. A Punnett square incorrectly predicts the outcome of a dihybrid cross. There are four phenotypes in the F2 offspring, but not in the expected ratios. Why? The genes are parti...

Biomedical Sciences - The application of the principles of the natural sciences, especially biology and physiology, to clinical medicine. Processing a Crime Scene - 5 parts include photography, sketch, interview, collect evidence, and examine/analyze evidence. Forensic Entemology - The use of insects and bugs to determine when a person died Livor Mortis - The dsicoloration of the skin due to the pooling of blood in the dependent parts of the body following death. Rigor Mortis - The body b...

Ap Bio Chapter 18 Practice Test 99 Questions with Verified Answers The role of a metabolite that controls a repressible operon is to - CORRECT ANSWER e) bind to the repressor protein and activate it The tryptophan operon is a repressible operon that is - CORRECT ANSWER E) turned off whenever tryptophan is added to the growth medium. Which of the following is a protein produced by a regulatory gene? - CORRECT ANSWER D) repressor A lack of which molecule would result in the cell's ina...

Molecular Diagnostics Exam 3 [100% PASS] /verified/ Substitution of a nucleotide that doesn't change the amino acid sequence. *Ans* Silent Substitution changes amino acid sequence with another amino acid with similar biochemical properties. *Ans* conservative Substitution changes amino acid sequence with another amino acid with different biochemical properties. *Ans* nonconservative Terminates proteins prematurely when a nucleotide substitution produces a stop codon instead of an am...