Chem331 Lect 14 Membranes
... Cholesterol Impacts Membrane Fluidity—Prevents Extremes -OH group on cholesterol interacts with polar head groups, steroid/hydrocarbon chain buried in the lipid bilayer Decreases membrane fluidity, increases membrane packing—also prevents membrane crystallizaton Reduces the membrane’s permeability ...
... Cholesterol Impacts Membrane Fluidity—Prevents Extremes -OH group on cholesterol interacts with polar head groups, steroid/hydrocarbon chain buried in the lipid bilayer Decreases membrane fluidity, increases membrane packing—also prevents membrane crystallizaton Reduces the membrane’s permeability ...
Biology
... Therefore , A diet rich in animal fats (saturated) is linked to the development of diseases of the heart and major arteries . While unsaturated fats (plant fats or oil) not to have this effect. ...
... Therefore , A diet rich in animal fats (saturated) is linked to the development of diseases of the heart and major arteries . While unsaturated fats (plant fats or oil) not to have this effect. ...
MEMBRANE PERMEABILITY ! membranes are highly impermeable
... ! membranes are highly impermeable to ions and polar molecules ! bilayer core is hydrophobic, so these species must shed their water of hydration to get across ! dehydration is energetically very unfavourable (like a high activation energy barrier for a chemical reaction) ! species such as Na+, Cl!, ...
... ! membranes are highly impermeable to ions and polar molecules ! bilayer core is hydrophobic, so these species must shed their water of hydration to get across ! dehydration is energetically very unfavourable (like a high activation energy barrier for a chemical reaction) ! species such as Na+, Cl!, ...
Lecture 3 HAEMOGLOBIN
... after birth. 65% of Hb is synthesized in the erythroblast and 35 % at the reticulocyte stage. Haem synthesis occurs largely in the mitochondria by a series of biochemical reactions commencing with the condensation of glycine and succinyle co-enzyme A under the action of the key ratelimiting enzyme G ...
... after birth. 65% of Hb is synthesized in the erythroblast and 35 % at the reticulocyte stage. Haem synthesis occurs largely in the mitochondria by a series of biochemical reactions commencing with the condensation of glycine and succinyle co-enzyme A under the action of the key ratelimiting enzyme G ...
Transport In and Out of the Cella
... Facilitated Diffusion • The proteins helps or facilitated the diffusion by changing shape and moving the molecule down the concentration gradient. • This is very similar to diffusion in that both involve the movement of molecules down the concentration gradient with out energy – They differ in the ...
... Facilitated Diffusion • The proteins helps or facilitated the diffusion by changing shape and moving the molecule down the concentration gradient. • This is very similar to diffusion in that both involve the movement of molecules down the concentration gradient with out energy – They differ in the ...
AP Chemistry
... 11.2.4.5.1 Long, thin molecules are more polarizable than compact molecules, because of increased surface area for contact between molecules. 11.2.4.5.2 Larger molecules are more polarizable than smaller molecules, because they have more electrons, which are relatively far from the nuclei. 11.2.5 Hy ...
... 11.2.4.5.1 Long, thin molecules are more polarizable than compact molecules, because of increased surface area for contact between molecules. 11.2.4.5.2 Larger molecules are more polarizable than smaller molecules, because they have more electrons, which are relatively far from the nuclei. 11.2.5 Hy ...
Bio II Elodea Lab: Photosynthesis and Cellular
... water in the presence of light. This complex process of changing light energy into chemical energy takes place in green plants – plants hat contain chlorophyll. The rate of photosynthesis is determined by the amount of light available. As light intensity increases, the rate of photosynthesis increas ...
... water in the presence of light. This complex process of changing light energy into chemical energy takes place in green plants – plants hat contain chlorophyll. The rate of photosynthesis is determined by the amount of light available. As light intensity increases, the rate of photosynthesis increas ...
The Origin of Life - Frederick H. Willeboordse
... RNA given a suitable template (without the help of an enzyme). I.e. copying can occur spontaneously under the right conditions. ...
... RNA given a suitable template (without the help of an enzyme). I.e. copying can occur spontaneously under the right conditions. ...
Structure of Molecules and Compounds | Principles of Biology from
... life. Because a carbon atom has four electrons in its outer shell, it can form connections with four other atoms. Many carbons linked together can form an endless variety of molecules. Carbon can form double as well as single bonds. This greatly increases the variety of molecules that can be formed ...
... life. Because a carbon atom has four electrons in its outer shell, it can form connections with four other atoms. Many carbons linked together can form an endless variety of molecules. Carbon can form double as well as single bonds. This greatly increases the variety of molecules that can be formed ...
Unit three: - Life Science Academy
... Protein- Any of a class of nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids Are an essential part of all living organisms Structure dictates function! One primary function- to act as enzymes! ...
... Protein- Any of a class of nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids Are an essential part of all living organisms Structure dictates function! One primary function- to act as enzymes! ...
Biochemical methods of conversion
... C5H7NO2 + 5O2 → 5CO2 + NH3 + 2H2O + energy As an example, anaerobic digestion of waste involves a consortium of bacteria, which can be broadly divided into three main groups. Fermenting bacteria (also termed acidifying or acidogenic bacteria) These cause hydrolysis and acidogenesis of the substrate. ...
... C5H7NO2 + 5O2 → 5CO2 + NH3 + 2H2O + energy As an example, anaerobic digestion of waste involves a consortium of bacteria, which can be broadly divided into three main groups. Fermenting bacteria (also termed acidifying or acidogenic bacteria) These cause hydrolysis and acidogenesis of the substrate. ...
COURSE DETAILS: E INTRODUCTION Metabolism can be defined
... ATP. Anabolism refers to biosynthetic processes in which simple precursor molecules are enzymatically converted into the molecular components of cells, such as nucleic acids, proteins, lipids and polysaccharides. Biosynthesis requires the input of ATP which is provided by catabolism. There is also o ...
... ATP. Anabolism refers to biosynthetic processes in which simple precursor molecules are enzymatically converted into the molecular components of cells, such as nucleic acids, proteins, lipids and polysaccharides. Biosynthesis requires the input of ATP which is provided by catabolism. There is also o ...
Long-term adaptation of Saccharomyces cerevisiae to the
... C.WT (WT, black) were log2-scaled and normalized to the initial concentration of the analyzed metabolite at early steady state (t= 135 h) for each strain, thus highlighting their fold change over time. Error bars represent standard deviation in two replicate chemostat cultures of each strain. In alp ...
... C.WT (WT, black) were log2-scaled and normalized to the initial concentration of the analyzed metabolite at early steady state (t= 135 h) for each strain, thus highlighting their fold change over time. Error bars represent standard deviation in two replicate chemostat cultures of each strain. In alp ...
Chapter 1
... Kingdom Plantae consists of multicellula eukaryotes that carry out photosynthesis, the conversion of light energy to food. ...
... Kingdom Plantae consists of multicellula eukaryotes that carry out photosynthesis, the conversion of light energy to food. ...
Aquatic Ecosystems Terrestrial Ecosystems Equilibrium Evolution 1
... A fraction of energy is passed to the next level organism which again uses this energy for its life processes making the energy available for the next organism even less. By the time the top is reached, barely any of the original energy is left. ...
... A fraction of energy is passed to the next level organism which again uses this energy for its life processes making the energy available for the next organism even less. By the time the top is reached, barely any of the original energy is left. ...
Physics - ForumIAS.com
... Improper development of testes due to addition X chromosome (XXY). Permanent sterility. Sex linked recessive trait resulting into the development of involuntary movements, mental retardation & kidney damage. Autosomal dominant resulting in abnormalities of body parts especially eyes & fingers. Sex l ...
... Improper development of testes due to addition X chromosome (XXY). Permanent sterility. Sex linked recessive trait resulting into the development of involuntary movements, mental retardation & kidney damage. Autosomal dominant resulting in abnormalities of body parts especially eyes & fingers. Sex l ...
Biochemistry (Molecular and Cellular)
... The study of living things at the molecular level has undergone tremendous expansion in recent years, leading to ever-increasing insights into topics as various as the origin of life, the nature of disease and the development of individual organisms. Powerful new techniques, such as those of molecul ...
... The study of living things at the molecular level has undergone tremendous expansion in recent years, leading to ever-increasing insights into topics as various as the origin of life, the nature of disease and the development of individual organisms. Powerful new techniques, such as those of molecul ...
Protein Synthesis
... • when there is no lactose present, the LacI protein binds to the operator, which partially blocks the promoter region, preventing RNA polymerase from binding to it • LacI is a repressor protein • when lactose is present, it binds to the LacI protein, changing its shape and causing it to fall off of ...
... • when there is no lactose present, the LacI protein binds to the operator, which partially blocks the promoter region, preventing RNA polymerase from binding to it • LacI is a repressor protein • when lactose is present, it binds to the LacI protein, changing its shape and causing it to fall off of ...
PP Chapter 9 - Trimble County Schools
... • Catabolic pathways funnel electrons from many kinds of organic molecules into cellular respiration • Glycolysis accepts a wide range of carbohydrates • Proteins must be digested to amino acids; amino groups can feed glycolysis or the citric acid cycle ...
... • Catabolic pathways funnel electrons from many kinds of organic molecules into cellular respiration • Glycolysis accepts a wide range of carbohydrates • Proteins must be digested to amino acids; amino groups can feed glycolysis or the citric acid cycle ...
Classwork May 15th
... Protein Synthesis 19. RNA is short for what kind of nucleic acid? [1pt] 20. Compare and contrast DNA and RNA. [6pts] 21. What are the two types of RNA used in protein synthesis? [2pts] 22. Describe the process of protein synthesis. Include the words, template, codon, mRNA, tRNA, DNA, ribosome, amino ...
... Protein Synthesis 19. RNA is short for what kind of nucleic acid? [1pt] 20. Compare and contrast DNA and RNA. [6pts] 21. What are the two types of RNA used in protein synthesis? [2pts] 22. Describe the process of protein synthesis. Include the words, template, codon, mRNA, tRNA, DNA, ribosome, amino ...
Biochemistry
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Biochemistry, sometimes called biological chemistry, is the study of chemical processes within and relating to living organisms. By controlling information flow through biochemical signaling and the flow of chemical energy through metabolism, biochemical processes give rise to the complexity of life. Over the last decades of the 20th century, biochemistry has become so successful at explaining living processes that now almost all areas of the life sciences from botany to medicine to genetics are engaged in biochemical research. Today, the main focus of pure biochemistry is in understanding how biological molecules give rise to the processes that occur within living cells, which in turn relates greatly to the study and understanding of whole organisms.Biochemistry is closely related to molecular biology, the study of the molecular mechanisms by which genetic information encoded in DNA is able to result in the processes of life. Depending on the exact definition of the terms used, molecular biology can be thought of as a branch of biochemistry, or biochemistry as a tool with which to investigate and study molecular biology.Much of biochemistry deals with the structures, functions and interactions of biological macromolecules, such as proteins, nucleic acids, carbohydrates and lipids, which provide the structure of cells and perform many of the functions associated with life. The chemistry of the cell also depends on the reactions of smaller molecules and ions. These can be inorganic, for example water and metal ions, or organic, for example the amino acids which are used to synthesize proteins. The mechanisms by which cells harness energy from their environment via chemical reactions are known as metabolism. The findings of biochemistry are applied primarily in medicine, nutrition, and agriculture. In medicine, biochemists investigate the causes and cures of disease. In nutrition, they study how to maintain health and study the effects of nutritional deficiencies. In agriculture, biochemists investigate soil and fertilizers, and try to discover ways to improve crop cultivation, crop storage and pest control.