Plasmid vectors Study guides, Class notes & Summaries

AMCB 2023 Test Questions with Correct Answers To verify DNA purity we have to: - Answer-Measure absorbance at 260 nm and 280 nm. The addition of proteinase K in the buffer ATL is to: - Answer-Disrupt the cell envelope to lyse cells. The genomic DNA that we extract from cells (of any kind) is polar and sticky. This property is useful for purification purposes. Which of the following surfaces is likely to be used, with good efficiency, to purify DNA. - Answer-A glass rod/bar To quantify ...

Microbiology Exam 2 practice Tests 208 Questions with Verified Answers Which of the following statements is correct? A) For every amino acid, there is one codon. B) A codon may signify more than one amino acid. C) For every codon, there is one amino acid. D) All of these are correct. - CORRECT ANSWER For every Codon, there is one amino acid The sigma factor of RNA polymerase is necessary for A) maximum transcription of the gene. B) termination of the mRNA chain. C) elongation...

Bio 202 EXAM 3 QUESTIONS AND CORRECT DETAILED ANSWERS How is recombinant DNA technology used to clone the human GH gene? 1st step! - ANSWER 1. use PCR to obtain the gene (Simply cutting the DNA with restriction enzymes would not be an effective way to isolate a specific gene. The genome would be cut into so many fragments, if you ran a gel it would be a smear! Which fragment is yours? You would need hybridization to isolate your fragment. Wouldn't have much DNA- not like the amo...

Genetics Practice Exam 55 Questions with Verified Answers Which process is represented by the arrow labeled W? A. replication B. translation C. transcription D. RNA splicing - CORRECT ANSWER C Which of the labeled structures contains RNA with a catalytic function? A. 1 B. 2 C. 4 D. 5 E. 2, 3 and 4 - CORRECT ANSWER C Which of the labeled is made of chromatin? A. 1 B. 1 and 4 C. 4 D. 5 - CORRECT ANSWER A Which of the following molecules, NOT represented on this diagram, a...

Genetics practice exam 2|42 Questions with Verified Answers . Which enzyme untwists the parent strands of DNA during replication? - CORRECT ANSWER DNA helicase Tetrad analysis is a technique for - CORRECT ANSWER Mapping genes in organisms retaining the four meiotic products in one structure The enzymes most directly concerned with catalyzing DNA synthesis is - CORRECT ANSWER DNA polymerase What did Lederberg and Tatum's 1946-experiment show? - CORRECT ANSWER That sexual recombinatio...

1 MCAT - BIO/BIOCHEM EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ defunct mRNA translation in bacteria would... Correct Answer: prevent cells from replicating. lysogenic cycle Correct Answer: a viral reproductive cycle in which the viral DNA is added to the host cell's DNA and is copied along with the host cell's DNA Lytic phase or lytic cycle Correct Answer: phage replicates immediately, destroying the host cell (All phages carry out this life cycle) prote...

CSET 215/217 Xam Practice Test 147 Questions with Verified Answers Which is not true about a cell membrane? A. It is made from phospholipids B. Both plant and animal cells have a cell membrane C. The cell wall is the same as the cell membrane in plants D. It controls the passage of nutrients within a cell - CORRECT ANSWER C. The cell wall is the same as the cell membrane in plants Plant cells also have an outer cell wall to give it structure Microorganisms use all but the followin...

Biochemistry: Concepts and Connections (Appling et al.) Chapter 1 Biochemistry and the Language of Chemistry 1) The water content in the human body is approximately: A) 90%. B) 80%. C) 70%. D) 60%. E) 50%. Answer: C 2) The four most abundant chemical elements in living systems are: A) hydrogen, oxygen, sulfur and phosphorus. B) hydrogen, carbon, nitrogen and oxygen. C) sodium, potassium, carbon and oxygen. D) sodium, potassium, nitrogen and sulfur. E) carbon, nitrogen, oxygen and potassium. Answ...

El Camino College Compton Educational Center Microbiology 33 Final Lecture Exam A & B By Dr. Eyob Wallano Instruction: Please use the provided scantron to answer all questions from each section. 5 % will be taken off from your total score if any marking is left on the exam booklet. Section E and F will be answered separately on provided paper and submitted with the booklet. Section A. Multiple Choice 1. An epidemic disease is one that A. breaks out in higher than usual proportions in a populatio...

Fundamentals of Biochemistry Life at the Molecular Level 4th edition by Voet- Test Bank Sample Test Chapter 3: Nucleotides, Nucleic Acids, and Genetic Information Matching A) diploid B) phosphodiester C) probe D) pyrimidine E) introns F) cloning G) transformed H) exons I) ampicillin J) autoradiography K) chain-terminator L) purine M) ester 1. Cytosine, uracil, and thymine are derivatives of . Ans: ...