Which of the following is NOT true regarding nicotine?   a. its psychoactive effects include improved attention, concentration, learning, and memory   b. green tobacco sickness affects smokers who use tobacco products that haven’t been properly dried   c. stress accelerates nicotine metabolism, driving smokers into nicotine withdrawal faster   d. it might be the only addictive chemical in tobacco, but other chemicals in tobacco might operate as catecholamine agonists   e. of the main pharmacologic treatments to aid smoking cessation, only Zyban (bupropion) does not lessen withdrawal symptoms through gentle activation of ACh receptors

Q: 1. A nucleoside is composed of Sugar and Nucleic Acid-Base. 2. The Nucleic Acid base in DNA and RNA…

A: Statement 1 is FALSE. BECAUSE NUCLEOSIDE IS COMPOSED OF NIYROGEN BASE+ PENTOSE SUGAR, NOT THE…

Q: An individual developed a condition characterized by progressive muscular weakness and aching muscle…

A: This shuttle functions in the transporting the fatty acids present in the cytosol to the…

Q: Using DEAE-cellulose as ion exhange resin, indicate the starting and ending pH for the narrowest…

A: Ion exchange chromatography is used to separate the charged molecules such as amino acids and…

Q: A recent genome sequencing project for the bacterium Burkholderia mallei has identified a new…

A: The new protein identified here has a partial sequence given as TVEVNAPGDVQKALSELQQINDGRLDIRI…

Q: 3. snRNA is produced in transcription. 4. Initiator tRNA enter ribosome with the help of EF-Tu. 5.…

A: Transcription is the process of synthesis of RNA. The process of transcription requires RNA…

Q: what transport proteins are involved is getting ca2+ out of cytosol

A: Proteins are composed of amino acids, which are bound together by peptide linkage. Amino acids…

Q: How many molecules of NADH are produced if 12 molecules of glucose enter the glycolytic pathway?

A: Glycolysis is a catabolic process which occurs in cytosol.

Q: Consider an enzyme (P) that gets activated by forming a dimer (P2): 2P P2 At 25 °C, we have AH- 19…

A: ∆Ho is change in enthalpy of the protein activation= 19KJ/mol, it is the heat content of the given…

Q: 7. The standard free-energy change (in terms of net ATP production) when glucose is converted to 6…

A: All living organism except extremophiles metabolize carbohydrate particularly Glucose to meet up the…

Q: Concentration Substrate/Cofactor (nM)

A: Enzyme kinetics is the study of an enzyme catalyzed biochemical reactions. Usually it is studied by…

Q: Indicate a positive result with a (+) sign, and a (-) if otherwise. A triple (+) may be used to…

A: Molisch’s test - is used to detect carbohydrates. Molisch test gives positive for all carbohydrates…

Q: Given Raffinose, Briefly explain its expected reaction (based on their structural formula) to the…

A: Raffinose is a trisaccharide of glucose, galactose and fructose in which glucose acts as a bridge…

Q: What enzyme(s) control the total levels of cGMP in a cell? Is guanylyl cyclase one of the enzymes?

A: Cyclic GMP or cGMP is a second messenger molecule during the process of signal transduction.

Q: Match the following descriptions to the given choices. A. Aldosterone The first molecule in the…

A: Steroids are biologically four ringed organic compounds that act as important components of cell…

Q: ). Isoniazid (MAO inhibitor) is prescribed to the patient with Parkinson discase. What does cause…

A: Parkinson's disease: A long term degenerative disorder of central nervous system.

Q: 1 Suppose that you have 1ml of a buffer solution with a pH of 6.8 and you add 1ml of 2% starch…

A: Salivary amylase is an enzyme that works on catalytic digestion of starch. Salivary amylase…

Q: Complex No.3 named: Select one: O a. succinate dehydrogenase O b. NADH dehydrogenases Oc. Cytochrome…

A: A complex is a structure made up of a central atom, molecule, or protein that is loosely coupled to…

Q: Describe the roles of calcium in the cell, and the mechanisms that the cell uses to control…

A: Calcium is a vital nutrient that aids in the mineralization of the skeleton. Over 99 percent of the…

Q: What does protein function in the human body?

A: Proteins are made up of amino acids or we can say that amino acids are the building block of…

Q: How many ATP molecules are produced when 6 molecules of glucose enter glycolysis?

A: Glycolysis is a catabolic pathway in which six Carbon Glucose is catabolised into two 2carbon…

Q: Second messenger in regulation of metabolism is: Select one: O a. hormones Оb. АТР neurotransmitters…

A: Secondary Messengers are the molecules that act as amplifying components in the cell signalling and…

Q: For carbohydrates to be converted to energy, it undergoes the process of metabolism, where in the…

A: Carbohydrates are major energy source of human beings. It is most important component of our diet .…

Q: Reactions and Thermodynamics of Glycolysis

A: Third step of glycolysis, fructose-6-phosphate is converted to fructose- 1,6-bisphosphate by…

Q: Which of the following statements is correct about oxidative pentose phosphate pathway? Group of…

A: Oxidative pentose phosphate pathway: . This is the first phase in pentose phosphate pathway in which…

Q: How useful to you is the mnemonic in remembering which one oxidizes and which one reduces?

A: Oxidation and reduction are two types of reactions, in which there occurs the loss of electrons and…

Q: Describe how you would make 10mls of a solution with concentration: 10mM Glucose (MW-180.16g/mole)…

A: In a solution concentration of solute is reduced simply by mixing more water or by adding more…

Q: How many FADH2 and NADH molecules get produced by beta oxidation of palmitic acid (a 16 carbon fatty…

A: Beta oxidation is a process of breakdown of fatty acid molecules by breaking the bond between beta…

Q: How many more acetyl CoA are generated from stearic acid than from linoleic acid during beta…

A: The process of beta oxidation of stearic acid yields two distinct products and these are acetyl-CoA…

Q: 4. You prepare a solution of a biopharmaceutical drug candidate. Initially you have a clear…

A: Biopharmaceutical drugs are the drugs prepared from biological sources such as microorganisms, human…

Q: How does compromised pyruvate kinase activity lead to anemia?

A: "Since you have posted multiple question we will answer the first question for you. If you want any…

Q: the structure of a soap molecule, use the concept of intermolecular forces to explain why we use…

A: Soap molecules has hydrophilic head and a hydrophobic tail, they are composed of long chains of…

Q: You are required to isolate, purify and verify the purity of an enzyme from cytosol of a plant

A: Enzymes are usually composed of proteins which is specific for its substrate. It has immense…

Q: Sample Results Remarks Glycine A Methionine B Egg albumin

A: Lead sulphide test is a specific test for the detection of sulphur containing aminoacid like cystein…

Q: Question 8 All of the following have terpene structure, except Cholecalciferol Squalene Carotenoids…

A: Terpenes generally are composed of two, three, four, or six isoprene units. Many important terpenes…

Q: 4. Liver alcohol dehydrogenase (LADH) catalyzes a reversible, pH-dependent oxidation of an alcohol…

A: Density=massvolumeDensity of methanol=mass of methanolvolume of methanol0.79 g/ml=mass of…

Q: Visceral fat loss is often associated with increased insulin sensitivity. Assuming that with the…

A: D. -10.6

Q: Multiple forms of enzymes with the same catalytic activity but with different structures are called:…

A: Option (a) is incorrect because  Holoenzyme:- The complete, biologically active conjugated enzyme (…

Q: Microbes can provide beneficial activities. Bioremediation (using bacteria) is a process used to…

A: Bioremediation is a waste management technique. Living organisms can be used in this process to…

Q: 10. Isoniazid (MAO inhibitor) is prescribed to the patient with Parkinson discase. What does cause…

A: Parkinson's disease is commonly seen in adults after the age of 50. Parkinson's disease is known to…

Q: 6. The synthesis of fatty acids depends on the sequential transfer of three carbon malonyl-groups…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Why aren’t your cells poisoned to death even though they create toxins like hydrogen peroxide?

A: The hydrogen peroxide formed produced during normal cellular metabolism. It is a potent toxin that…

Q: o) For each of the potential electron acceptors below, determine the following using the class notes…

A: In a chemical reaction, Oxidizing agents are ions or molecules which accept electron and reducing…

Q: well-conserved regions in multiple sequence aligmements: a. are areas of structural importance b.…

A: Multiple Sequence Alignment (MSA) is the alignment of three or more comparable length biological…

Q: Polysaccharides may gel through a variety of different mechanisms. Which of these statements is…

A: Carbohydrates are divided into 3 classes monosaccharides, disaccharides, and polysaccharides.…

Q: The portion (the C-terminal end) of original substrate with the new amino terminus diffuses away.…

A: Introduction:  Enzymes have a spectacular ability to accelerate the rate of a chemical reaction.…

Q: What type of tertiary interactions do we observe for the two amino acid residues in the box? Draw…

A: It is the interaction between the R groups in the protein that determines tertiary structure. These…

Q: 8. Which of the following amino acids in hemoglobin accepts proton H+ when red blood cells reach…

A: Hemoglobin is a conjugated protein with four polypeptide chains. It contains two identical alpha and…

Q: Biochemistry: Diagram the biosynthetic pathway from precursors (like amino acids, PRPP, etc.) to…

A: There are two pathways for the biosynthesis of nucleotides: de novo and the salvage pathways. In the…

Q: Calculate the number of ATPATP generated from one saturated 1212‑carbon fatty acid. Assume that each…

A: Fatty acids are broken down through beta-oxidation in mitochondria. The end product of…

Q: On the right the Hill plot com- (b) pares the O2 binding properties of Hb Ya- kima with those of HbA…

A: The Hill plot given in the diagram shows the allosteric regulation and affinity of the different…