Within each class of compounds, the variations around the basic chemical skeleton essentially concern the degrees of oxidation, hydroxylation, methylation, glycosylation and the possible connections to other molecules (primary metabolites such as carbohydrates, lipids, proteins, or phenolic secondary ...
For example, macromoleculesprovide structural support, a source of stored fuel, the ability to store and retrieve genetic information, and the ability to speed biochemical reactions. Four major types of macromolecules—proteins, carbohydrates, nucleic acids, and lipids—play these important roles in the...
Why do lipids make effective cell membranes in living cells? Why can't water go through the phospholipid bilayer? How do lipid soluble molecules cross the cell membrane? Briefly describe the structure of a eukaryotic plasma membrane, identifying at least two com...
How do enzymes digest lipids? Describe the process of protein synthesis. Where does it occur? How is Protein BAG3 expressed? What are proteins? How can the diversity of proteins in living organisms be explained? (a) What are proteins? (b) How can the diversity of proteins in living organi...
Explain why organisms have codes for protein production directly, but not for other molecules as lipids or carbohydrates? How do the "R" groups of amino acids contribute to the 3-D shape of a protein? (a) What types of proteins a...
Role of lipids in cell membrane structure and function Biochemical mechanisms of DNA repair Metabolic pathways in cancer cells: targets for drug development Protein folding and its implications in diseases Biochemistry of hormone action in human physiology Molecular biology of gene expression and regulation...
Changes in CD47 mobility observed in apoptotic cells may thus be controlled by its interaction with plasma membrane components, such as lipids, lipid-associated molecules or proteins that are modified during apoptosis. To test this hypothesis, we decided to treat cells with cytoskeleton, integrins or...
EPS is a hydrated gel composed primarily of polysaccharides and containing other macromolecules such as proteins, nucleic acids, and lipids. It plays a key role in maintaining the integrity and function of the biofilm. Channels in the EPS allow movement of nutrients, waste, and gases throughout ...
ion transport proteins. Direct links between the biophysical state of membranes and cellular metabolism have been discovered. For instance, the viscosity of lipids may govern the activity of the electron transport system (ETS) by influencing the rates of diffusion-controlled reactions between ETS enzyme...
How do enzymes digest lipids? What is the role of enzymes in our body? What are the basic mechanisms of enzyme control, and why do they matter? A) What enzymatic reaction does glucokinase perform in metabolism? How does it differ from other hexokinases, and why is this important in p...