[pic] Discuss the relationship between calorie restriction diet and longevity Calorie restriction (CR) diet consists of reducing the daily calorie intake by up to 40% without removing nutritional value‚ (Willcox et al.‚ 2007‚ Katsman et al.‚ 2010). The emphasis is based on under-nutrition and not mal-nutrition. The Okinawa diet seems to have a CR status for two main reasons‚ the first being that Okinawa had reduced food supplies in the first half of the 19th century and secondly
Premium Nutrition Obesity Death
Review 2: Text DNA is a very special and important molecule that is in our life‚ DNA is found in the nucleus. DNA stores the data needed to make poly peptides‚then data in a nucleic acid is transferred to messenger RNA‚ which escapes the nucleus into a protein. According to the DNA and protein article DNA is used in many things but DNA is used to make pol-peptides. They are another word for proteins. When a cell makes a protein the direction are resembled from the part of an DNA. DNA strand and transcript
Premium DNA Gene Protein
Restriction Fragment Length Polymorphism and Southern Blotting 1. Abstract The aim of the experiment was to be introduced to the techniques involved in the identification of restriction fragment length polymorphisms. Restrictions were carried out using three different restriction enzymes‚ ECORI‚ HindIII and BstELI with their buffers. Lambda (λ) DNA was then examined using electrophoresis and Southern blotting. The results showed that λ DNA was best digested by EcoRI as all of the expected bands
Premium DNA Molecular biology Gene
Enzyme kinetics (catalase/kmno4) Enzyme catalysis Farah Mohamed galal 22-3014 t09 Introduction: E + S → ES → E + P Enzymes are proteins which act as a catalyst in biochemical reactions(affect the rate of achemical reaction). The substrate binds to the active site of the enzyme. Any deformation of the active site will affect the activity of the enzyme‚ these are some ways that enzyme action may be affected because of them: 1- Salt concentration: If it is close to zero or very high
Premium Catalysis Enzyme Catalase
The history of DNA structure discovery(sec.4.1): 1869- Johan miescher •studies the nuclei of white blood cells(isolated th material using HCL and digestive proteins •Named the substance nulclein and also found the material was rich in nitrogen and phosphorus. 1919-Pheobus levene •Discovered that DNA was made of chains of nucleotides *see nucleotide structure* 1920 DNAvsRNA * see chart •Thought that 4 nucleotides were connected in the same repeated pattern •protein gas 20 amino acids
Premium DNA
In 1792 James painted a portrait called‚ “A Voluptuary in the Horrors of Digestion.” A voluptuary is someone who overindulges in pleasurable things. In this painting it shows‚ a Prince sitting on a fancy chair after eating a large meal. This Prince will someday be King. In order to be a good king they must have the following things‚ he must be ambitious‚ honest‚ and good with money. For the following reasons this Prince is not ready to be King. First‚ the king must be ambitious. Being ambitious
Premium English-language films Political philosophy Louis XIV of France
There are many reasons why enzymes have such a high specificity. The first variable is an enzyme’s primary structure. A primary structure is just a combination of amino acids. There are twenty different amino acids that the primary structure can be created from. Every enzyme has a different order that the acids are placed in and each one has a different number or amino acids. The slightest change in this structure can affect a protein’s conformation and function. The secondary structure is a regular
Premium Protein Amino acid
My lab group studied the effect of PH on reaction rate/ enzyme activity measured by foam height. PH is the measure of the concentration of hydrogen ions in a solution. The higher the hydrogen ion concentration‚ the lower the pH. Every enzyme has an optimal PH‚ meaning they have a very small window in which they are most active. Our enzyme (potato smoothie) had an optimal PH of 7.0-7.5. We know this because we measured the enzyme’s reaction rate by measuring foam height. The largest foam height we
Premium Enzyme Chemical reaction Chemistry
DNA Transcription The process of transcription is where a copy of a gene is made within DNA to use as RNA. It is located in the nucleus of eukaryotes and in the nucleoid of prokaryotes. DNA stores information encoded in a genetic code. The code consists of four letters and they are T (thymine)‚ G (guanine)‚ A (Adenine)‚ and C (cytosine). One gene codes for on protein. RNA is a molecule that copies information that is coded in another genetic code. This code also consists of the same four
Free DNA RNA Gene
MISEP Chemistry 512 – Jacobs Enzyme Catalyst Lab - Formal Report – August 8‚ 2007 ABSTRACT This investigation examined what would happen to the rate of an enzyme-catalyzed reaction if the concentration of substrate changed. We hypothesized that if the concentration increased‚ then the reaction rate would also increase. To test our question‚ we varied a combination of substrate and buffer‚ totaling 6mL‚ with a constant amount of 2 drops of catalyst. The enzyme catalyst‚ peroxidase‚ increased
Premium Chemical reaction Enzyme Chemistry