Description : .Membranous bag with hydrolytic enzymes which is used for controlling intracellular digestion of macromolecules is (a) endoplasmic reticulum (b) nucleosome (c) lysosome (d) phagosome.
Last Answer : (c) lysosome
Description : Endocytosis is a process whereby a cell (a) Digests itself (b) Engulfs and internalises material using its membrane (c) Identifies other cells within its immediate (d) Enables the extracellular digestion of large molecules
Last Answer : Ans:(b)
Description : How does the pancreatic juice participate in the digestion of proteins? What are the involved enzymes?
Last Answer : The pancreas secretes trypsinogen that, undergoing action of the enzyme enterokinase secreted by the duodenum, is transformed into trypsin. Trypsin in its turn catalyzes the activation of pancreatic ... activated by trypsin) helped by the enzyme aminopeptidase made in the intestinal mucous membrane.
Description : Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. ... enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder
Last Answer : What is the adnexal organ of the digestive system in which bile is stored?
Description : In conversion of lactic acid to glucose, three reactions of glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase
Last Answer : Answer : B
Description : In conversion of Lactic acid to Glucose, three reactions of Glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate Carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase
Last Answer : C
Description : Assertion: Peroxysomes are called as suicidal bag. Reason: Peroxysome has acid hydrolytic enzymes.
Last Answer : Assertion: Peroxysomes are called as suicidal bag. Reason: Peroxysome has acid hydrolytic enzymes. A. If ... D. If both Assertion & Reason are false.
Description : Hydrolytic enzymes which act on low pH are called as (a) proteases (b) α-amylases (c) hydrolases (d) peroxidases.
Last Answer : (a) proteases
Description : Lysosomes are rich in (a) nucleic acids (b) hydrolytic enzymes (c) carbohydrates (d) hormones.
Last Answer : (b) hydrolytic enzymes
Description : Lysosome contains (a) oxidative enzymes (b) hydrolytic enzymes (c) reductive enzymes (d) anabolic enzymes
Description : Select the alternative giving correct identification and function of the organelle A' in the diagram. (a) Mitochondria - Produce cellular energy in the form of ATP (b) Golgi body - ... packaging material (c) Lysosomes - Secrete hydrolytic enzymes (d) Endoplasmic reticulum - Synthesis of lipids
Last Answer : (a) Mitochondria - Produce cellular energy in the form of ATP
Description : A cell organelle containing hydrolytic enzymes is (a) lysosome (b) microsome (c) ribosome (d) mesosome.
Last Answer : (c) ribosome
Description : Which of the following statements is not correct? (a) Lysosomes are formed by the process of packaging in the endoplasmic reticulum. (b) Lysosomes have numerous hydrolytic enzymes. (c) The hydrolytic enzymes of lysosomes are active under acidic pH. (d) Lysosomes are membrane-bound structures.
Last Answer : (a) Lysosomes are formed by the process of packaging in the endoplasmic reticulum.
Description : Digestive enzymes are (a) oxidative (b) Hydrolytic (c) Synthetic (d) None of these
Last Answer : (b) Hydrolytic
Description : Mechanical digestion is the fragmentation of food aided by specialized physical structures, such as teeth, previous to extracellullar digestion. The mechanical fragmentation of food helps digestive ... there are mandibles and chewing muscles to triturate food previous to the chemical digestion.
Last Answer : Concerning extracellular digestion what is meant by chemical digestion?
Description : Breaking of big organic molecules in the presence of enzymes is called
Last Answer : Breaking of big organic molecules in the presence of enzymes is called A. Cracking B. Pyrolysis C. Fermentation D. Oxidation
Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose
Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose
Description : Distinguish between intracellular and extracellular digestion? -Biology
Last Answer : answer:
Description : What is extracellular digestion ?
Last Answer : Extracellular digestion is that in which food breaking into utile molecules that can be internalized by the cell is done in the extracellular space, i.e., outside the cell. In extracellular digestion ... the external environment. Later the cell can benefit from these products of the digestion.
Description : Besides the liver which is the other adnexal gland of the digestive system that releases substances in the duodenum participating in extracellular digestion?
Last Answer : The other adnexal gland of the digestive system is the pancreas. This organ makes digestive enzymes that digest proteins (proteases), lipids (lipases) and carbohydrates (pancreatic amylases). ... and deoxyribonuclease are also secreted by the pancreas. Digestion System - Image Diversity: pancreas
Description : The saliva pH is approximately 6.8. It is thus a slightly acid pH. Saliva lubricates the food bolus and initiates the enzymatic extracellular digestion of food. It also works as a buffer for the ... 's milk and in the mucosae of the intestine and airways) that protect the organism against pathogens.
Last Answer : What is the salivary digestive enzyme? Which type of food does it digest and into which smaller molecules does it transform the food?
Description : What is the difference between a complete digestive system and an incomplete digestive system? How are these types of digestive tubes associated or not to extracellular digestion?
Last Answer : Animals with an incomplete digestive system are those in which the digestive tube has only one opening (cnidarians, platyhelminthes). Animals with a complete digestive system are those ... . In animals with complete digestive systems extracellular digestion within the digestive tube predominates.
Description : How is extracellular digestion related to cellular and tissue specialization?
Last Answer : A variety of specialized cells and tissues appeared with extracellular digestion to provide enzymes and special structures for the breaking down of dietary macromolecules. This phenomenon ... for other tasks and differentiations while benefiting from nutrients distributed through the circulation.
Description : How different are intracellular and extracellular digestion? What is the evolutionary advantage of extracellular digestion?
Last Answer : Intracellular digestion is that in which the breaking down of macromolecules takes place within the cell. Extracellular digestion is that in which macromolecules are broken down in places outside ... the size of their molecules, could not be interiorized by diffusion, phagocytosis or pinocytosis.
Description : Mode of digestion in 'Hydra' is (a) Intracellular (b) Extracellular (c) Both these (d) None
Last Answer : (c) Both these
Description : What are enzymes? (a) saccharides that catalyze chemical reactions (b) unsaturated fats that catalyze chemical reactions (c) DNA molecules that catalyze chemical reactions (d) proteins that catalyze chemical reactions
Last Answer : proteins that catalyze chemical reactions
Description : Organic molecules that increase the rate of metabolic reactions with themselveschangingareknown as A- coenzymes B- enzymes C- substrates D- .reactants
Last Answer : enzymes
Description : What are extracellular enzymes? -Biology
Last Answer : An exoenzyme, or extracellular enzyme, is an enzyme that is secreted by a cell and functions outside that cell. Exoenzymes are produced by both prokaryotic and eukaryotic cells and have been shown to be a crucial component of many biological processes.
Description : The best example of extracellular enzymes (exoenzyme) is (A) Nucleases (B) Digestive enzymes (C) Succinic dehydrogenase (D) None of these
Last Answer : Answer : C
Description : In the extracellular medium, DNA-degrading enzymes would likely be to prevent transfer of DNA by A- conjugal transfer by a self-transmissible plasmid B- generalized phage transduction C- natural transformation D- none of the above
Last Answer : natural transformation
Description : n lysogeny, A- a bacteriophage transfers bacterial DNA B- bacteria take up double stranded DNA from the environment C- DNA-degrading enzymes in the extracellular medium would stop the process D- a bacteriophage genome is integrated into the bacterial genome
Last Answer : a bacteriophage genome is integrated into the bacterial genome
Description : Which of the following statement(s) is/are true concerning the cell plasma membrane? a. The plasma membrane is composed of amphipathic molecules b. The hydrophobic core of the lipid bilayer of the ... contribute to the cell coat d. The membrane proteins of nerve cells are highly voltage-dependent
Last Answer : Answer: a, b, d The plasma membrane defines the boundary of the cell and serves to contain and concentrate enzymes and other macromolecule constituents. The plasma membrane is ... and bear carbohydrate moieties primarily as oligosaccharide chains that contribute to the cell coat or glycocalyx
Description : The most important chemical process in digestion is: a) diffusion b) active transport c) hydrolysis
Last Answer : ANSWER: C -- HYDROLYSIS
Description : Besides being fundamental for the activation of the main gastric digestive enzyme how does HCl also directly participate in digestion?
Last Answer : With its corrosive effect, HCl also helps the rupture of the adhesion between food particles, facilitating the digestive process.
Description : Emulsification is - (1) breaking fats into small globules (2) digestion of fats (3) absorption of fats (4) storage of fats
Last Answer : (1) breaking fats into small globules Explanation: Emulsification is the breakdown of large fat globules into smaller, uniformly distributed particles. It is accomplished mainly by bile acids ... intestine. Emulsification is the first preparation of fat for chemical digestion by specific enzymes.
Description : Emulsification is (1) breaking fats into small globules (2) digestion of fats (3) absorption of fats (4) storage of fats
Last Answer : breaking fats into small globules
Description : Enzymes help in (a) Respiration (b) Digestion of food (c) Immune system (d) Reproduction
Description : Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction
Description : Pick out the wrong statemen (A) Autocatalytic reactions are exemplified by microbial fermentation reactions (B) The slowest step has the greatest influence on the overall reaction rate in case of an ... reaction (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction
Last Answer : (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction
Description : For glyburide, all of the following metabolic reactions are logical EXCEPT (A) O-demethylation (B) aromatic oxidation (C) benzylic hydroxylation (D) amide hydrolysis
Last Answer : (B) aromatic oxidation
Description : Do hydrolysis breaks molecules apart?
Last Answer : yes, it breaks down water
Description : What is the name for a chemical reaction that builds up larger molecules? a. dehydration synthesis b. hydrolysis c. reactants d. products
Last Answer : a. dehydration synthesis
Description : The anticholinesterase action of edrophonium is short lasting because termination of its action depends on: A. Dissociation and diffusion of the drug from the enzyme B. Hydrolysis of the drug by the enzyme C. Synthesis of fresh enzyme molecules D. A combination of the above three processes
Last Answer : A. Dissociation and diffusion of the drug from the enzyme
Description : In which of the folowing molecules, vacant orbitals do not participate in bonding :-
Last Answer : In which of the folowing molecules, vacant orbitals do not participate in bonding :- A. `B_(2)H_(6)` B. `Al_(2) ... H_(3)N.BF_(3)]` D. `Si_(2)H_(6)`
Description : What is meant by hydrolytic reaction of water?
Last Answer : That means the ability of water to cleave or break apart achemical bond. It is referred to as hydrolysis.
Description : In which of the following types of enzymes, water may be added to a C—C double bond without breaking the bond? (A) Hydrolase (B) Hydratase (C) Hydroxylase (D) Oxygenase
Last Answer : Answer : A
Description : What are the major enzymes of chemical digestion? -Biology
Description : Why Cells that carry on digestion within the cell do not partly digest themselves because they secrete their digestive enzymes into membrane-enclosed?
Last Answer : Feel Free to Answer
Description : What enzymes secreted from the pancreas promote digestion?