AP ESSAY ANSWERS: 16-20
1. Information transfer is fundamental to all living organisms. For TWO of the following examples, explain in detail, how the transfer of information is accomplished. A) The genetic material in one eukaryotic cell is copied and distributed to two identical daughter cells. B) A gene in a eukaryotic cell is transcribed and translated to produce a protein. C) The genetic material from one bacterial cell enters another via transformation, transduction or conjugation. 16 total pts possible
A) max 8 pts combined (4 pts max each part – Part a is looking for “copy and distribute”) “copy”= DNA replication -when DNA is copied- interphase, S phase of cell cycle -recognition of origin site on DNA
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The human genome illustrates both continuity and change.
A) Describe the essential features of TWO of the procedures/techniques below. For each of the procedures/techniques you describe, explain how its application contributes to understanding genetics. -The use of a bacterial plasmid to clone and sequence a human gene -Polymerase Chain Reaction (PCR) -Restriction Fragment Length Polymorphism (RFLP) analysis
B) All humans are nearly identical genetically in coding sequences and have many proteins that are identical in structure and function. Nevertheless, each human has a unique DNA fingerprint. Explain this apparent contradiction.
16 points possible
A) max 12 pts total (6 pts for each part of the subquestions) Describe= max 3 pts, 1 for each bullet Explain= max 3 pts, 1 for each bullet Describe plasmid cloning: -cut plasmid with restriction enzyme -cut/isolate human sequence with the corresponding restriction enzyme -mix/ anneal/ligate -introduce recombinant plasmid into bacteria -select recombinant bacteria (ex. antibiotic resistance, fluorescence, reporter gene, etc) -bacteria reproduction used to amplify the sequence (PCR) -describe either degradative (Maxam-Gilbert) or dideoxy (Sanger) method
3a. Body more than five times as long as broad; front edge of dorsal fin far
Carbohydrates: any of a class of organic compounds that are polyhydroxy aldehydes or polyhydroxy ketones, or change to such substances on simple chemical transformations, as hydrolysis, oxidation, or reduction, and that form the supporting tissues of plants and are important food for animals and people.
K. Paraphrase the three potential fates of the excited electron produced when a photon meets a chlorophyll molecule
Classify plants and animals according to the physical characteristics that they share. Identify the structures in plants (leaves, roots, flowers, stem, bark, wood) that are responsible for food production, support, water transport, reproduction, growth, and protection.
Surface Tension: The measure of how difficult it is to stretch or break the surface of a liquid.
d. In 3.a (above) you mutated one letter. What role do you think the redundancy of the genetic code plays in this type of change?
d. In 3.a (above) you mutated one letter. What role do you think the redundancy of the genetic code plays in this type of change?
The final 2 property points were earned for the description and discussion of specific heat.
The author explains the basics of DNA by describing the simple part of it, “proteins are the molecules that do all of the work in every organism, from carrying oxygen, to building tissue, to copying DNA for the next generation” (Carroll 73). He also explained the four bases that are building blocks that are held together by strong bonds and are represented by the letters A, C, G and T. Scientist also learned that A and T always pair with each other as well as G and C, this helps them because if they know one strand of DNA they already know the second because of how the bases match up. The author states that scientists have found about 500 genes that exist in all forms of life, the author explains that these genes are “immortal”. These genes have endured millions of years of evolution and have not been mutated because they are essential for every organism to have; these genes can have important jobs such as decoding of the DNA and RNA and making
17) The process by which the cytoplasm of a eukaryotic cell divides to produce two cells is called
Describe what you would expect to find in a cell, at both the cellular and molecular levels, with the following mutation. Justify your answers.
There are three types of cloning; reproductive cloning, genetic cloning, and therapeutic cloning. This report will focus on reproductive cloning. Reproductive cloning is the duplication of an existing organism’s genetic material. Once duplicated, the organism is an exact copy of the original organism.
Part A: Describe the structural components of DNA and outline mammalian DNA replication and repair.
Translation is the process of a protein that is synthesized from information contained by a molecule of messenger RNA. In translation mRNA defined is translated into a 20 letter code of amino
b. Recombinant DNA – DNA from 2 or more sources. Done by Euk cells during Meiosis. Always from same molecule.