Plant collection protocol
... a) Herbarium voucher: At least two specimens of the same plant must be prepared. One will be kept at the University of Johannesburg Herbarium, and the second deposited to a main herbarium in the region where the plant was collected. b) Few leaves stored in silica gel: The silica gel is a hygroscopic ...
... a) Herbarium voucher: At least two specimens of the same plant must be prepared. One will be kept at the University of Johannesburg Herbarium, and the second deposited to a main herbarium in the region where the plant was collected. b) Few leaves stored in silica gel: The silica gel is a hygroscopic ...
ENZYMES (Basic Concepts and Kinetics) (Chapter 8)
... The Effects of Enzyme Inhibitors 1. Competitive In the presence of a competitive inhibitor, it takes a higher substrate concentration to achieve the same velocities that were reached in its absence. So while Vmax can still be reached if sufficient substrate is available, one-half Vmax requires a h ...
... The Effects of Enzyme Inhibitors 1. Competitive In the presence of a competitive inhibitor, it takes a higher substrate concentration to achieve the same velocities that were reached in its absence. So while Vmax can still be reached if sufficient substrate is available, one-half Vmax requires a h ...
PowerPoint - Oregon State University
... kinase absence E-coli cells. How are we sure that pool imbalances were caused by NDP kinase abnormalities and not by loss of protein-protein interaction resulting from absence of NDP kinase? A mutant strain with structurally intact, but catalytically inactive form of NDP kinase was tested for pool l ...
... kinase absence E-coli cells. How are we sure that pool imbalances were caused by NDP kinase abnormalities and not by loss of protein-protein interaction resulting from absence of NDP kinase? A mutant strain with structurally intact, but catalytically inactive form of NDP kinase was tested for pool l ...
the description of the course
... replication, repair, transcription, genome organization) up to large scale approaches (molecular signature using NGS and proteomic). - Highlight how a research continuum, from basic research to clinical and translational research, provides opportunities to solve human health issues. Educational obje ...
... replication, repair, transcription, genome organization) up to large scale approaches (molecular signature using NGS and proteomic). - Highlight how a research continuum, from basic research to clinical and translational research, provides opportunities to solve human health issues. Educational obje ...
Biology Partnership Grant Lesson Plan 1
... instruction. The teacher informs the students that the set of instructions called DNA makes up the recipe for traits in all living organisms including us. The information in a DNA strand is grouped into small segments. Each segment is made of even smaller units just like a recipe – In a recipe each ...
... instruction. The teacher informs the students that the set of instructions called DNA makes up the recipe for traits in all living organisms including us. The information in a DNA strand is grouped into small segments. Each segment is made of even smaller units just like a recipe – In a recipe each ...
Structure and function of nucleases in DNA repair: shape
... structures were solved in the DNA-free states, although a number of them were determined in complex with cofactors or/and DNA (Table 2). The classification of nucleases in terms of their 3D structures provides more defined properties, since it is accepted that the 3D structures are much less diverge ...
... structures were solved in the DNA-free states, although a number of them were determined in complex with cofactors or/and DNA (Table 2). The classification of nucleases in terms of their 3D structures provides more defined properties, since it is accepted that the 3D structures are much less diverge ...
Natural selection
... TYPES NATURAL SELECTION CONT… • Disruptive/Diversifying selection: occurs when natural selection favors both extremes of continuous variation (increases genetic variance when natural selection selects for two or more extreme phenotypes that each have specific advantages). Over time, the two extreme ...
... TYPES NATURAL SELECTION CONT… • Disruptive/Diversifying selection: occurs when natural selection favors both extremes of continuous variation (increases genetic variance when natural selection selects for two or more extreme phenotypes that each have specific advantages). Over time, the two extreme ...
Biochemistry notes (updated 10/13)
... living things. They can store twice as many calories as polysaccharides can. Oils (mostly from plants) contain more unsaturated fatty acids, while fats (animals) contain more saturated fatty acids. Simple lipids also dissolve vitamins ...
... living things. They can store twice as many calories as polysaccharides can. Oils (mostly from plants) contain more unsaturated fatty acids, while fats (animals) contain more saturated fatty acids. Simple lipids also dissolve vitamins ...
AP2A Ch2 Chemistry-2017
... 4. What sort of chemical reactions do you suppose would be happening during digestion? What about when your body is making more bone? ...
... 4. What sort of chemical reactions do you suppose would be happening during digestion? What about when your body is making more bone? ...
Plant Nuclear Genome Size Variation
... 3)Metabolic cost of DNA limits genome size. 4)Interspecific variation in mutational tendency to delete excess DNA. 5)Population size and mutational hazard of excess DNA, especially gain of function mutations. 6)All of the above ...
... 3)Metabolic cost of DNA limits genome size. 4)Interspecific variation in mutational tendency to delete excess DNA. 5)Population size and mutational hazard of excess DNA, especially gain of function mutations. 6)All of the above ...
Chap 2-3 Notes - WordPress.com
... Lipids Two layers of lipids = bilipid cell membrane Lipids: are generally not soluble in water. Common categories of lipids are: fats waxes oils steroids Lipids can be used to store energy. Some lipids are important parts of biological membranes and waterproof coverings. ...
... Lipids Two layers of lipids = bilipid cell membrane Lipids: are generally not soluble in water. Common categories of lipids are: fats waxes oils steroids Lipids can be used to store energy. Some lipids are important parts of biological membranes and waterproof coverings. ...
Activity Apr 20, 2016 – 6.3 Genetic Mutation
... c) Write the protein fragment that the mRNA strand in (b) above would code for. d) If the 4th nucleotide from the left in the mRNA strand above were changed from U to C, what mutation is this and what would the resulting mRNA look like? ...
... c) Write the protein fragment that the mRNA strand in (b) above would code for. d) If the 4th nucleotide from the left in the mRNA strand above were changed from U to C, what mutation is this and what would the resulting mRNA look like? ...
Ciliate Codon Translator Program Manual
... genes throughout history. This is most often done through finding the dN/dS ratio (that is, the ratio of changes in DNA that results in a new protein over the changes that produce no change in the protein). Results greater than 1 indicate that there is a positive selective pressure occurring on thes ...
... genes throughout history. This is most often done through finding the dN/dS ratio (that is, the ratio of changes in DNA that results in a new protein over the changes that produce no change in the protein). Results greater than 1 indicate that there is a positive selective pressure occurring on thes ...
Introduction to Pharmacogenetics Competency
... The information in this competency, including but not limited to any text, graphics or images, is for informational and educational purposes only. Although reasonable efforts have been made to ensure that the information provided is current, complete and, where appropriate, based on scientific evide ...
... The information in this competency, including but not limited to any text, graphics or images, is for informational and educational purposes only. Although reasonable efforts have been made to ensure that the information provided is current, complete and, where appropriate, based on scientific evide ...
Life Size Scaling
... A virus is a very simple thing – it consists of nucleic acid (DNA or RNA) surrounded by a protein shell called a capsid. Some viruses are enveloped, which means they are surrounded by a lipid envelope, just like our cells. But even through viruses are constructed with some of the same building bloc ...
... A virus is a very simple thing – it consists of nucleic acid (DNA or RNA) surrounded by a protein shell called a capsid. Some viruses are enveloped, which means they are surrounded by a lipid envelope, just like our cells. But even through viruses are constructed with some of the same building bloc ...
Biological Chemistry
... C. ______saccharides - polymers of many monosaccharides (usually __________ molecules) covalently bonded together 1. ___________ - storage form of glucose in animals; stored in our ______ and muscle cells, broken down to glucose when needed 2. _______ (amylose) - storage form of glucose in plants; s ...
... C. ______saccharides - polymers of many monosaccharides (usually __________ molecules) covalently bonded together 1. ___________ - storage form of glucose in animals; stored in our ______ and muscle cells, broken down to glucose when needed 2. _______ (amylose) - storage form of glucose in plants; s ...
The Universe and Its Stars / Matter and Its Interactions
... Where do you get your traits from? True or false: Only animal cells contain DNA. What is the difference between the products in mitosis and meiosis? One parent is 6’ tall. The other parent is 5’ tall. Geneticists predict that each child they have will be exactly 5’6” tall. What hypothesis is represe ...
... Where do you get your traits from? True or false: Only animal cells contain DNA. What is the difference between the products in mitosis and meiosis? One parent is 6’ tall. The other parent is 5’ tall. Geneticists predict that each child they have will be exactly 5’6” tall. What hypothesis is represe ...
Phosphorus
... Physical properties Non-metallic Density: 1,83 g/cm3 Melting point: 41 °C Boiling point: 277 °C ...
... Physical properties Non-metallic Density: 1,83 g/cm3 Melting point: 41 °C Boiling point: 277 °C ...
Essay Prompt #1 - Cloudfront.net
... Enzymes are important biological molecules. They are one of the primary means of regulating chemical processes within cells. A. ...
... Enzymes are important biological molecules. They are one of the primary means of regulating chemical processes within cells. A. ...
Test 1, 2007
... to the three homologous chromosomal pairs. The "m" superscript indicates that the homologue is maternally derived, while the "p" indicates a paternally derived homologue. (a) In each of the nuclei below, draw the expected configuration of all chromosomes, making sure to label each homolog using the ...
... to the three homologous chromosomal pairs. The "m" superscript indicates that the homologue is maternally derived, while the "p" indicates a paternally derived homologue. (a) In each of the nuclei below, draw the expected configuration of all chromosomes, making sure to label each homolog using the ...
Deoxyribozyme
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Deoxyribozymes, also called DNA enzymes, DNAzymes, or catalytic DNA, are DNA oligonucleotides that are capable of catalyzing specific chemical reactions, similar to the action of other biological enzymes, such as proteins or ribozymes (enzymes composed of RNA).However, in contrast to the abundance of protein enzymes in biological systems and the discovery of biological ribozymes in the 1980s,there are no known naturally occurring deoxyribozymes.Deoxyribozymes should not be confused with DNA aptamers which are oligonucleotides that selectively bind a target ligand, but do not catalyze a subsequent chemical reaction.With the exception of ribozymes, nucleic acid molecules within cells primarily serve as storage of genetic information due to its ability to form complementary base pairs, which allows for high-fidelity copying and transfer of genetic information. In contrast, nucleic acid molecules are more limited in their catalytic ability, in comparison to protein enzymes, to just three types of interactions: hydrogen bonding, pi stacking, and metal-ion coordination. This is due to the limited number of functional groups of the nucleic acid monomers: while proteins are built from up to twenty different amino acids with various functional groups, nucleic acids are built from just four chemically similar nucleobases. In addition, DNA lacks the 2'-hydroxyl group found in RNA which limits the catalytic competency of deoxyribozymes even in comparison to ribozymes.In addition to the inherent inferiority of DNA catalytic activity, the apparent lack of naturally occurring deoxyribozymes may also be due to the primarily double-stranded conformation of DNA in biological systems which would limit its physical flexibility and ability to form tertiary structures, and so would drastically limit the ability of double-stranded DNA to act as a catalyst; though there are a few known instances of biological single-stranded DNA such as multicopy single-stranded DNA (msDNA), certain viral genomes, and the replication fork formed during DNA replication. Further structural differences between DNA and RNA may also play a role in the lack of biological deoxyribozymes, such as the additional methyl group of the DNA base thymidine compared to the RNA base uracil or the tendency of DNA to adopt the B-form helix while RNA tends to adopt the A-form helix. However, it has also been shown that DNA can form structures that RNA cannot, which suggests that, though there are differences in structures that each can form, neither is inherently more or less catalytic due to their possible structural motifs.