A thymine dimer is formed as a result of pair of abnormally chemically bonded adjacent thymine (T) bases in the DNA structure. This damage is caused by UV (ultraviolet) radiation and it is a type of Mutation.
and Lab Exer n this experiment you will evaluate effect of UV light on bacterial growth. UV light affects growth by interfering with DNA, resulting in thymine dimer formation. The dimerization is confined within adjacent thymine residues on same strand (intrastrand ). These dimmer lesions have consequence on DNA functions including interference in DNA replication, transcription etc, so UV exposure of cells can lead to lethal effects for bacterial multiplications. This forms the basis for UV method to control bacterial...
In the gas phase, acetic acid exists as an equilibrium of monomer and dimer molecules. (The dimer consists of two molecules linked through hydrogen bonds.) The equilibrium constant, Kc , at 25 °C for the monomer-dimer equilibrium 2CH3CO2H↔(CH3CO2H)2 has been determined to be 3.2x104. Assume that acetic acid is present initially at a concentration of 8.3x10-4 mol/L at 25 °C and that no dimer is present initially. a.) What percentage of the acetic acid is converted to dimer Percentage =...
7.Draw the basic structure of an amino acid dimer (two amino acids bound together); label an amine, carboxyl, side chainand peptide bond. 8.Define primary and tertiary protein structure. How does the tertiary structure depend on the primary structure?
1. Consider [Re2Cls]f, a dimer with metal-metal bond a) Draw the energy ordering of the d orbitals in [ReCL] and label each energy level with the appropriate d orbital label and an orbital picture. Consider ? b) Use your diagram from part (a) to generate an energy level diagram for a bimetallic complex [M2Clsl in which two square pl MC] units are stacked as shown in 2. Assume there are no Cl-Cl interactions and consider only the d-based orbitals in...
All of the following are purine bases except ____: 1. Guanine 2. Thymine 3. Adenine 4. Hypoxanthine 5. All of the above are purine bases
define a wax and show a reaction diagram to create a wax.
1.With the aid of the diagram, define the meaning of 'Resilience'. You should include the relationship with the yield strength and young modulus. 2. With the aid of diagram, describe the relationship of strain and time characteristics for silicon polymer at leathery stage
Define Incomplete lineage sorting and using a diagram explain its consequences for phylogenetic reconstruction, label your diagram
(a) Define the properties of a homogeneous Poisson process. Include a conceptual diagram illustrating the process, and label the diagram to support your answer. [3 marks How is an inhomogeneous Poisson process different? [1 marks (b) (c) Describe how the following distributions are related to a homogeneous Poisson process with rate A Poisson(A) f(x) x0 At Exponential(A) f(x) λαp f(x) AexpAt At)- (n-1 Gamma(n, A) Your description should identify what each distribution is used to model, and should include at...
14.2 Modeling the Structure and Function of Nucleic Acids and Their Products 2. The following diagram represents some of the puzzle piece pieces used in this section. a Assembled in this form, do they represent an amino acid, c. a portion of messenger RNA, or a deoxyribonucleotide (b) Explain your answer. Opo 3. Why is DNA often called a double helix? 4. State the following ratios. (a) Guanine to cytosine in a double-stranded DNA molecule: (b) Adenine to thymine: -...