STUDY guide exam 3 chapter 9
STUDY guide exam 3 chapter 9 BIOL 2460-001
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This 3 page Study Guide was uploaded by Mercy on Monday November 16, 2015. The Study Guide belongs to BIOL 2460-001 at University of Texas at Arlington taught by Dr. Michelle Badon in Summer 2015. Since its upload, it has received 84 views. For similar materials see Nursing Microbiology in Biology at University of Texas at Arlington.
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Date Created: 11/16/15
Study guide for exam 3 part B Sunday November 15 2015 847 PM Chapter 9 1What are Dinoflagellates they are a group of eukaryotic marine plankton 2Define bioluminescence It is the phenomenon of living organisms giving off light 3Biouminescence organisms use their light for o to attract prey or to scare off predators 4What is luciferase it is an enzyme that leads to the emission of light 5Define Genetics it is the study of the inheritance or heredity of living things that involves transmission of biological traits from parent to offspring 6What is a genome it is a complete set of genetic information for a cell the sum total of genetic material of a cell 7What is a chromosome it is a discrete cellular structure composed of a neatly packaged DNA molecule 8Define gene functional unit of a genome it is site on the chromosome that provides information for a certain cell function 9What is the difference between phenotype and genotype genotype is the sum of all of these types of genes structural regulatory and genes that code for RNA constitutes an organism s distinctive genetic makeup while phenotype is the physical characteristics of a bacterium such as the genes that directs the formation of flagellum and a virus contains genes for its capsid structure 10Gene is most commonly a protein 11What is genomics it is the study and analysis of the nucleotide sequence of DNA 12What are the 3 basic categories of gene Structural genes code for proteins Genes that code for RNA used in protein synthesis Regulatory genes control gene expression 13Who discovered the DNA code a Watson Crick James Francis Francis Crick James Watson None of the above It is both James Watson and Francis Crick in 1953 14 is the basic unit of a DNA structure Nucleic acid nucleotide Pu nes None of the above All of the above he nucleotide is composed of and Phosphate ribose sugar and a nitrogenous base Phosphate deoxyribose sugar and a nitrogenous base Phosphate pentose sugar and a nitrogenous base Purines Pyrimidines and a base Phosphate Purines and a base NA is composed of while RNA is composed of ribose sugar deoxyribose sugar deoxyribose sugar ribose sugar uracil thymine thymine uracil e Both B amp D 17Which is the correct base pairing in DNA DO nCT DQnCTQJ 15 DQnCTQJ 16 11de a AdenineThymine Guanineuracil b CytosineThymine GuanineAdenine c Adeninecytosine ThymineGuanine d AdenineThymine GuanineCytosine e None of the above 18What are the central Dogma Replication Transcription and Translation 19Define the following Replication fork The place in the helix where the strands are unwound and replication is taking place Each circular DNA molecule will have two replication forks Primer A length of RNA that is inserted initially during replication before it is replaced by DNA Leading strand The strand of new DNA that is synthesized in a continuous manner in the 5 to 3 direction Lagging strand The strand of new DNA that must be synthesized in short segments and later sealed together to form a strand in the 3 to 5 direction Okazaki fragments The short segments of DNA synthesized in a 5 to 3 direction which are then sealed together to form a 3 to 5 strand 20The genetic information encoded in DNA directs protein synthesis in two steps What are these steps a Transcription and translation b Translation and replication c Replication and Transcription d none of the above e all of the above 21What is tRNA molecule is a copy of a specific region of DNA that contains sequences of bases that form hydrogen bonds with complementary sections of the same tRNA strand 22For each of the 20 amino acids there is at least one specialized type of tRNA to carry it a False b True 23At what organelle is the Amino acid charged tRNA s and mRNA brought together a Nucleus b Mitochondria c Nucleotides d Ribosome e Cytoplasm 24 What is Lac Operon It is the important model for understanding the control of gene expression in bacteria 25When lactose is added to the culture medium transcription of the lac operon is while In the absence of lactose transcription is a Repressed induced b Induced repressed c Repressed only d Induced only e None of the above 26What is diauxic Growth it represents the ability of glucose to repress the enzyme of lactose degradation 27What is bacterial genetics it is the study of heredity how genes function change and are transferred to other cells in the population 28What is the mechanisms by which genes are transferred in both 6 and G bacteria a Transduction Conjugation DNA mediated transfer transformation None of the above All of the above Note Read more on Traits of plasmids Gene mutation Process of transcription translation and replication Initiation of RNA synthesis Enzymes involved in DNA replication and their functions The 2 different nitrogenous bases which are Purines and Pyrimidines DO nCT
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