Meselson and stahl Study guides, Class notes & Summaries

Who performed classic experiments that supported the semiconservative model of DNA replication? - Meselson and Stahl What separates the DNA strands during replication? - helicase A new DNA strand elongates only in the 5' to 3' direction because - DNA polymerase can only add nucleotides to the free 3' end. What is the role of DNA ligase in the elongation of the lagging strand during DNA replication? - It joins Okazaki fragments together

GCD Quiz 6 Questions with Correct Answers The following statements below concern DNA replication. One of them is not true. Which is the false statement? A DNA double helix obeys the AT/GC rule. A DNA double helix could contain one strand that is 4 generations older than its complementary strand. A DNA double helix may contain two strands of DNA that were made at the same time. A DNA strand can serve as a template strand on many occasions. - Answer-A DNA double helix may conta...

In the extracellular matrix of an animal cell, you would like to test the binding partner of integrins in vitro. Integrins would most likely require firm attachment to which of the above option? correct answersActin You are working with Dr. Lee at University of Wisconsin-Madison to investigate cytokinesis in a newly discovered marine worm. You generated antibodies to conserved proteins involved in cell division in other organism to look for proteins that localize to important structures durin...

People to Know - AP Biology Exam Questions and Answers Gregor Mendel Monk who grew up in Austria, experimented with garden peas in 1857 to study inheritance, documented "particulate mechanism", came up with laws of independent assortment and segregation. Thomas Hunt Morgan Came up with first solid evidence associating a specific gene with a specific chromosome by working with various varieties of Drosophila; invented notation for symbolizing alleles; discovered sex-linked trait of whit...

Florida International University CHM 4220 EXAM 2 Chapter 12 Q&A Fall 2023/2024. 1. What are the two major conditions for genetic information being accurately copied every time a cell divides? 1. it has to be extremely accurate. 2. it has to take place at a high speed. 2. What were 3 models of DNA replication proposed and which one was confirmed valid? 1. conservative replication model 2. dispersive replication model 3. semiconservative replication model semiconservative replication mode...

What was the key finding from Griffith's experimants using live and heat-killed pathogenic bacteria? - correct answer -Genetic material can be transferred from dead to live bacteria. Which of the following is not a component of DNA? - correct answer -The pyrimidine uracile Chargaff studied the composition of DNA from different sources and found that - correct answer -the proportions of A equal that of T and G equals C. The bonds that hold two complementary strands of DNA together are -...

_____ is when an organism has more than two complete sets of chromosomes. correct answers Polyploidy When part of the chromosome has flipped its ordinary order. correct answers Inversion Change in one base of DNA that creates a premature stop codon. correct answers Nonsense mutation Humans are _____ and have the XX-XY system of sex determination. correct answers mammals The _____ peptide binds to the _____ recognition particle to make sure that a ribosome that is making a protein des...

Florida International University CHM 4220 EXAM 2 Chapter 12 Q&A Fall 2023/2024. 1. What are the two major conditions for genetic information being accurately copied every time a cell divides? 1. it has to be extremely accurate. 2. it has to take place at a high speed. 2. What were 3 models of DNA replication proposed and which one was confirmed valid? 1. conservative replication model 2. dispersive replication model 3. semiconservative replication model semiconservative replication mode...

GCD Exam 2 Practice Test Comp 86 Questions (chp 9-13) with Verified Answers Which of the following could be the components of a single nucleotide found in DNA? a. Ribose, phosphate, and cytosine b. Deoxyribose, phosphate, and uracil c. Deoxyribose, phosphate, and adenine d. Ribose, phosphate, and uracil - CORRECT ANSWER c. Deoxyribose, phosphate, and adenine 2. Which of the following is NOT a feature of the DNA double helix? a. It obeys the AG/TC rule. b. There are 10 nucleotides...

People to Know - AP Biology Exam Questions and Answers Gregor Mendel Monk who grew up in Austria, experimented with garden peas in 1857 to study inheritance, documented "particulate mechanism", came up with laws of independent assortment and segregation. Thomas Hunt Morgan Came up with first solid evidence associating a specific gene with a specific chromosome by working with various varieties of Drosophila; invented notation for symbolizing alleles; discovered sex-linked trait of whit...