C) They all contain one or more double bonds. D) They are a constituent of sterols. E) They are strongly hydrophilic. 2. Storage Lipids Pages: 346-358 Difficulty: 2 Ans: E Which of the following molecules or substances contain, or are derived from, fatty acids?
Both forms of vitamin D are known as secosteriods, a steroid that has one broken steroid ring (bond). The structural difference between vitamin D2 and D3 is their side chains, a chemical group attached to the core, or backbone, of the molecule. For example, D2’s side chain is a double bond between carbon-22, carbon-23, and a methyl group attached to carbon-24. Vitamin D on the other hand, when inside the body, is changed from its original form to a hormone ( Hormone D), and undergos two hydroxylations: the first in the liver, forming calcidiol, and the second in the kidney, forming calcitriol. Vitamin D can be obtained in two main ways: ingestion and sun exposure.
How are these electron carriers reoxidized in anaerobic bacteria? How are these electron carriers reoxidized in aerobic bacteria? 3. (24 points) Aerobic eukaryotic organisms use the unique abilities of mitochondria to extract further energy from glucose (and other nutrients). a) The citric acid cycle completes the degradation of glucose.
bioloQuiz 9 Chapter 10 Question 1 Wastes are part of blood True False 2 points Question 2 A hematocrit is the % of ________________ 1. leukocytes 2. eythrocytes 3. platelets 4. clotting factors 2 points Question 3 Normal hemotocrit is ___% erythrocytes of total volume 1. 50 2. 40 3. 30 4. 45 2 points Question 4 The protein in blood that regulates osmotic pressure and pH is albumin True False 2 points Question 5 All of the following are PLASMA blood proteins EXCEPT 1. albumin 2. hemoglobin 3. fibrinogen 4. globulin 2 points Question 6 Which element in hemoglobin binds oxygen 1. calcium 2. zinc 3. iron 4. iodine 2 points Question 7 How many red blood cells in blood and how many white blood cells?
2nd step: The second step consist of the start point of glycogenesis and it’s a reversible reaction which transform the Glucose -6P to Glucose -1P. The enzymes responsible from this reaction is the Phosphoglucomutase. Glucose -6P Glucose -1P The phosphoglucomutase catalyze the reaction by moving a functional group, here it’s a phosphate group. 3rd step: The third step consist to transform the Glucose -1P to UDP-Glucose. The enzyme responsible is UDP-Glucose pyrophosphorylase and this reaction consumes UTP.
Digestion of carbohydrates begins in the mouth as mentioned earlier with the enzyme amylase which is present in the saliva. This breaks the carbohydrates into their simpler subunits (saccharide forms). In the stomach, the carbohydrates are converted into chyme with the peristaltic action of the stomach. Next, the chyme will pass into the duodenum. At the introduction to the duodenum, alpha amylase is secreted by the pancreas and further breaks down the carbohydrates into primary simple sugars.
INSTRUCTION Oils and fat quality. Lipid oxidation. Determination of peroxide value in fats and oil. It is arguable that the two most important chemical reactions that occur in food systems are lipid oxidation and non-enzymatic browning. This lab exercise focuses attention on the former reaction.
There are 3 main processes that comprise respiration: glycolysis; the Krebs cycle; and the respiratory chain. Glucose enters the cell by facilitated diffusion, and glycoloysis then takes place in the cytoplasm. Glucose is phosphorylated (using a phosphate molecule from the breakdown of adenosine triphosphate (ATP)) to form glucose phosphate, a compound which can also be used for the synthesis of glycogen elsewhere in the cell. Glucose phosphate is phosphorylated again, and splits into two triose phosphate sugars. Each of these is converted in a number of steps to pyruvate (another 3-carbon sugar), a process that releases some energy, and a hydrogen atom, which is transferred for use in the respiratory chain by the co-enzyme NAD.
WANTED: Alpha-amylase [pic] AKA: Ptyalin, a-1,1,4-a-D-Glucan glucanohydrolase; EC 3.2.1.1, Salivary amylase，pancreatic alpha amylase, Cyclodextrin glucanotransferase, calcium metalloenzymes, Termamyl Description: The molecular weight was 46,000. It’s optimum PH is 6.5-8.0, works best at body temperature 37°C. Signs of Resent activities: Alpha-amylase is an digestive enzyme that breaks the alpha bond of starch or glycogen through hydrolysis into maltose and dextrin. It process the starch chains into smaller pieces two or three glucose units. This enzyme is mainly found in the saliva and pancreatic juice of human body or other mammals.
The products of this stage are passed down into the next stages. The 2 molecules of pyruvate are passed down to the oxidation of pyruvate, and NADH will be used for the electron transport chain. The rest of the products, 4 ATP, ADP, and P, are used where needed in the cell. After glycolysis occurs, oxidation of pyruvate takes places in the mitochondrial matrix. During this stage,