Sample exam 1
... site. Explain how this takes part in the mechanism of the cleavage. The guanidino group is shown below: ...
... site. Explain how this takes part in the mechanism of the cleavage. The guanidino group is shown below: ...
SBI 4U Unit 1 Questions
... All essential unit questions are to be handed in at the beginning of class on the day of our unit test. Please be sure to answer all questions in your own words. You are expected to use class notes and your text to answer all questions. Feel free to use additional internet sources to help with your ...
... All essential unit questions are to be handed in at the beginning of class on the day of our unit test. Please be sure to answer all questions in your own words. You are expected to use class notes and your text to answer all questions. Feel free to use additional internet sources to help with your ...
Introduction
... roles in the cell, both on their own and as building blocks of macromolecules. The classes of small molecules that play significant roles in biology are ...
... roles in the cell, both on their own and as building blocks of macromolecules. The classes of small molecules that play significant roles in biology are ...
What is Biochemistry ?
... It emerged as a distinct discipline around the beginning of the 20th century when scientists combined chemistry, physiology and biology to investigate the chemistry of living systems by: A. ...
... It emerged as a distinct discipline around the beginning of the 20th century when scientists combined chemistry, physiology and biology to investigate the chemistry of living systems by: A. ...
Proteins*
... Two amino acids linked together are called dipeptides More than 2 linked together are called polypeptides polypeptides can be thousands of amino acids long ...
... Two amino acids linked together are called dipeptides More than 2 linked together are called polypeptides polypeptides can be thousands of amino acids long ...
Biochem 462 - public.asu.edu
... required for the complete oxidation of one 16 carbon fatty acid. Please do this in three steps (you need to explain your reasoning for full credit). If you cannot do one step, make an assumption and do the next one. a) Determine the number of FADH2, NADH and acetyl CoA molecules generated by beta ox ...
... required for the complete oxidation of one 16 carbon fatty acid. Please do this in three steps (you need to explain your reasoning for full credit). If you cannot do one step, make an assumption and do the next one. a) Determine the number of FADH2, NADH and acetyl CoA molecules generated by beta ox ...
proteins and protein structure
... Hemoglobin is comprised of four polypeptide subunits (each has tertiary structure). All four components carry a heme group that can bind to oxygen, and all four components must be present to form hemoglobin. The shape of the hemoglobin affects its ability to carry oxygen, and travel freely throughou ...
... Hemoglobin is comprised of four polypeptide subunits (each has tertiary structure). All four components carry a heme group that can bind to oxygen, and all four components must be present to form hemoglobin. The shape of the hemoglobin affects its ability to carry oxygen, and travel freely throughou ...
Cell A - biofort
... division is mainly restricted to repair and replacement. A k) Cells from human embryos and adult bone marrow, called stem cells, can be made to differentiate into many different types of cells, eg nerve cells. l) Human stem cells have the ability to develop into any kind of human cell. m) Treatment ...
... division is mainly restricted to repair and replacement. A k) Cells from human embryos and adult bone marrow, called stem cells, can be made to differentiate into many different types of cells, eg nerve cells. l) Human stem cells have the ability to develop into any kind of human cell. m) Treatment ...
state university college at buffalo - Buffalo State College Faculty and
... 26. Phosphofructose Kinase (PFK) is an important regulatory enzyme in glycolysis. PFK is allosterically inhibited by ATP. Explain why this is considered an example of feedback inhibition. ...
... 26. Phosphofructose Kinase (PFK) is an important regulatory enzyme in glycolysis. PFK is allosterically inhibited by ATP. Explain why this is considered an example of feedback inhibition. ...
Model Description Sheet
... synthesis and treat prostate, breast, and other hormone responsive cancers. Cholesterol is the precursor of all steroid hormones including testosterone and estrogen. CYP17A1, an enzyme bound to the membrane of adrenal cells, plays a critical role in the biosynthesis of steroid hormones. This enzyme ...
... synthesis and treat prostate, breast, and other hormone responsive cancers. Cholesterol is the precursor of all steroid hormones including testosterone and estrogen. CYP17A1, an enzyme bound to the membrane of adrenal cells, plays a critical role in the biosynthesis of steroid hormones. This enzyme ...
basic components of living things
... Fatty acids have long carbon chains. 2 molecules of H can be bound to Carbons. If there is only one bond between carbon molecules, they are saturated lipids. (All carbons are saturated with maximum number of H). Butter, margarine. (Found mostly in animals) If there is some double bonds between carbo ...
... Fatty acids have long carbon chains. 2 molecules of H can be bound to Carbons. If there is only one bond between carbon molecules, they are saturated lipids. (All carbons are saturated with maximum number of H). Butter, margarine. (Found mostly in animals) If there is some double bonds between carbo ...
Human Mitochondrial DNA
... • Sticky ends—one side of DNA is longer than the other, these overhangs allow for complementary matches between two DNA pieces cut by the same enzyme, the sticky ends match and pasting ma occur to produce an rDNA molecule • More than 1200 restriction enzymes discovered & isolated from bacteria • Rea ...
... • Sticky ends—one side of DNA is longer than the other, these overhangs allow for complementary matches between two DNA pieces cut by the same enzyme, the sticky ends match and pasting ma occur to produce an rDNA molecule • More than 1200 restriction enzymes discovered & isolated from bacteria • Rea ...
AP Biology Review – Unit 1
... • An enzyme speeds the reaction time between two substrate molecules by lowering the activation energy required for a reaction to occur. • Substrate molecules bind themselves to a particular site on the enzyme, called the active site, where catalysis takes place. ...
... • An enzyme speeds the reaction time between two substrate molecules by lowering the activation energy required for a reaction to occur. • Substrate molecules bind themselves to a particular site on the enzyme, called the active site, where catalysis takes place. ...
Test 2
... (a) How do animal cells carry out the conversion of pyruvate to phosphoenol pyruvate? Give the reactants, products, (names or structures) and the name(s) of the enzyme(s) involved. ...
... (a) How do animal cells carry out the conversion of pyruvate to phosphoenol pyruvate? Give the reactants, products, (names or structures) and the name(s) of the enzyme(s) involved. ...
20141031093018
... Active site (and R groups of its amino acids) can lower EA and speed up a reaction by • acting as a template for substrate orientation, • stressing the substrates and stabilizing the transition state, • providing a favorable microenvironment, • participating directly in the catalytic reaction. ...
... Active site (and R groups of its amino acids) can lower EA and speed up a reaction by • acting as a template for substrate orientation, • stressing the substrates and stabilizing the transition state, • providing a favorable microenvironment, • participating directly in the catalytic reaction. ...
Semester 1 AP Biology Exam Review Guide Directions: Use this as
... 3. What is the difference between catabolism and anabolism? Together, these reactions are referred to as metabolism. 4. Draw a picture of an enzyme catalyzed reaction and label the following. V. Substrate, active site, enzyme, enzyme-substrate complex, products 5. Why do enzymes follow the so-called ...
... 3. What is the difference between catabolism and anabolism? Together, these reactions are referred to as metabolism. 4. Draw a picture of an enzyme catalyzed reaction and label the following. V. Substrate, active site, enzyme, enzyme-substrate complex, products 5. Why do enzymes follow the so-called ...
Document
... particular pathway inhibits the first enzyme’s activity in the pathway – Regulate cell’s production of amino acids, vitamins, purines, and pyrimidines – Mechanism stops the cell from wasting chemical resources – Allosteric inhibitors play a role ...
... particular pathway inhibits the first enzyme’s activity in the pathway – Regulate cell’s production of amino acids, vitamins, purines, and pyrimidines – Mechanism stops the cell from wasting chemical resources – Allosteric inhibitors play a role ...
enzyme activity
... How do abiotic or biotic factors influence the rates of enzymatic reactions? ■BACKGROUND Enzymes are the catalysts of biological systems. They speed up chemical reactions in biological systems by lowering the activation energy, the energy needed for molecules to begin reacting with each other. Enzym ...
... How do abiotic or biotic factors influence the rates of enzymatic reactions? ■BACKGROUND Enzymes are the catalysts of biological systems. They speed up chemical reactions in biological systems by lowering the activation energy, the energy needed for molecules to begin reacting with each other. Enzym ...
Industrial_201502
... must be applied (Slip Op. Pp 11-14). The use of intrinsic evidence and extrinsic evidence by the district court impacts the standard of review. In those situations when the district court reviews only evidence intrinsic to the patent, the judge’s determination is solely a determination of law and th ...
... must be applied (Slip Op. Pp 11-14). The use of intrinsic evidence and extrinsic evidence by the district court impacts the standard of review. In those situations when the district court reviews only evidence intrinsic to the patent, the judge’s determination is solely a determination of law and th ...
Free energy
... Substrate Specificity of Enzymes • The reactant that an enzyme acts on is called the enzyme’s substrate • The enzyme binds to its substrate, forming an enzyme-substrate complex • The active site is the region on the enzyme where the substrate binds • Induced fit of a substrate brings chemical group ...
... Substrate Specificity of Enzymes • The reactant that an enzyme acts on is called the enzyme’s substrate • The enzyme binds to its substrate, forming an enzyme-substrate complex • The active site is the region on the enzyme where the substrate binds • Induced fit of a substrate brings chemical group ...
Enzyme
Enzymes /ˈɛnzaɪmz/ are macromolecular biological catalysts. Enzymes accelerate, or catalyze, chemical reactions. The molecules at the beginning of the process are called substrates and the enzyme converts these into different molecules, called products. Almost all metabolic processes in the cell need enzymes in order to occur at rates fast enough to sustain life. The set of enzymes made in a cell determines which metabolic pathways occur in that cell. The study of enzymes is called enzymology.Enzymes are known to catalyze more than 5,000 biochemical reaction types. Most enzymes are proteins, although a few are catalytic RNA molecules. Enzymes' specificity comes from their unique three-dimensional structures.Like all catalysts, enzymes increase the rate of a reaction by lowering its activation energy. Some enzymes can make their conversion of substrate to product occur many millions of times faster. An extreme example is orotidine 5'-phosphate decarboxylase, which allows a reaction that would otherwise take millions of years to occur in milliseconds. Chemically, enzymes are like any catalyst and are not consumed in chemical reactions, nor do they alter the equilibrium of a reaction. Enzymes differ from most other catalysts by being much more specific. Enzyme activity can be affected by other molecules: inhibitors are molecules that decrease enzyme activity, and activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors. An enzyme's activity decreases markedly outside its optimal temperature and pH.Some enzymes are used commercially, for example, in the synthesis of antibiotics. Some household products use enzymes to speed up chemical reactions: enzymes in biological washing powders break down protein, starch or fat stains on clothes, and enzymes in meat tenderizer break down proteins into smaller molecules, making the meat easier to chew.