Essays on Glyceraldehyde

Q. 1. Explain how gel filtration chromatography (size exclusion chromatography) separates molecules on the basis of their mass/size.

A. In gel filtration, porous beads are packed into a column. The pores are of different size. The column is then packed with a buffer solution. This buffer solution is present inside the beads as well as around it. When molecules of different size pass through the columns, the smaller molecules pass through the pores and take a longer path. The larger molecules, however, travel around the beads. Thus, larger molecules travel faster than the ...

- Describe two features that make all enzymes catalysts.

Enzymes are catalysts that increase the rate of reaction between substances and remain unchanged in the reaction. Enzymes are vital to several bodily functions and make possible such processes like metabolism and catabolism. Two features that make enzymes catalysts is their ability to lower the activation energy and their inherent tendency to combine with coenzymes and cofactors. Activation energy is the minimum energy required to activate the molecules of reactants in order to initiate a chemical reaction. Some substrates have high activation energies that would need very high temperatures to activate ...

Report on Case 1: Diagnosis of Hereditary Fructose Intolerance

Enzymes act as biological catalysts, they speed up biological reactions and are also capable of regulation. Enzymatic reactions can be anabolic – where a new substance is built from smaller ones; or catabolic – where a substance is broken down to yield simpler molecules. In the example of fructose, enzymes catabolize this simple sugar to substances that are intermediates of the glycolytic pathway, allowing fructose, a 6-carbon sugar, to be used by cells to obtain energy in a way similar to glucose (also a 6-varbon sugar). Aldolase B is one of the enzymes involved in the catabolism of fructose, and its deficiency results in ...

C3 and C4 photosynthetic pathways

Plants have the ability to grown and survive in a number of different environments. They can adapt from hot and dry to frigid temperatures. In order to adapt to various environmental conditions plants have to adapt and develop mechanisms to survive different conditions. One mechanism of adaptation involves the mode of fixing carbon dioxide. Carbon fixation is the process of incorporating inorganic Carbon to an organic form. Photosynthesis is the process of carbon fixation used by the plants. C3 plants usually are found in cold, temperate climate and are most widely distributed worldwide. They use environmental carbon-dioxide (CO2) and incorporate ...

Part A

How Enzymes Act As Protein Catalysts in Biochemical Processes Catalysis refers to the speeding up of a chemical reaction by a catalyst. A catalyst is a substance that accelerates a chemical reaction but does not undergo a permanent chemical change in the process. Enzymes are catalysts whose building blocks are amino acids: they are proteins. Enzymes also exhibit a defined three-dimensional structure. In addition, they have a cleft on their surface called active site. The active site is the region where substrate interactions take place. Enzymes play important roles in fructose metabolism. The first step of fructose metabolism in the liver is the phosphorylation of ...

Q1 Insolation can be described as the amount of energy of solar radiation received on a certain surface area and recorded in a given time. It is also known as solar irradiation and expressed as daily irradiation when recorded during a day and hourly irradiation when recorded during an hour. Throughout the year, the seasons undergo changes based on the quantity of sunlight hitting the Earth as it circles around the Sun. Seasons occur as a result of Earth tilting on its axis, moving in a loop around the Sun every year. Summer occurs when the hemisphere is angled towards the Sun ...

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Introduction

A balanced diet refers to the food intake, which incorporates all the dietary needs of an organism in the right proportions. This is unlike the adequate diet, which includes the energy that is sufficient energy for the need of an individual. A balanced diet, therefore, includes both sufficient energy as well as all the dietary requirements that are needed by an individual at the right proportion. The main components that make up a balanced diet include carbohydrate, proteins, vitamins, fats, dietary fiber, water and minerals. Carbohydrates as a source of nutrients in the body are usually broken down through ...