Description : The unique sets of proteins that present antigens on the surfaces of body cells are a. MHC proteins. b. Cytokines. c. Complement proteins. d. Immunoglobulins.
Last Answer : b. Cytokines.
Description : MHC Class III proteins include (A) Immunoglobulins (B) Components of complement system (C) T cells receptors (D) CD4 and CD8 proteins
Last Answer : Answer : D
Description : MHC Class II proteins, in conjunction with antigens, are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Last Answer : Answer : B
Description : MHC class II proteins are present on the surface of (A) All cells (B) B lymphocytes only (C) Macrophages only (D) Macrophages and B lymphocytes
Description : MHC class I proteins, in conjunction with antigens are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells
Last Answer : Answer : A
Description : MHC class I proteins are present on the surface of (A) B cells only (B) T cells only (C) Macrophages only(D) All cells
Description : T cells can recognise (A) Free antigens (B) Antigens bound to cells (C) Antigens bound to antibodies (D) Antigens bound to MHC proteins
Description : What is known about the structure of individual MHC genes?
Last Answer : Each MHC Class I and Class II gene consists of several exons and several introns.The most 5' exons in both Class I and Class II genes are the regulatory sequences; these code for the factors ... s transmembrane and cytoplasmic domains are also separate and located the most 3' in an individual gene.
Description : Antigens that bind directly to MHC proteins without any processing are known as _____. a. epitopes b. haptens c. superantigens d. naïve cells
Last Answer : c. superantigens
Description : . MHC class I proteins would be found on___________ whereas MHC class II proteins would be found on_____________ a. Nucleated Cells; Plasma Cells b. Nucleated Cells; Macrophages c. Dendritic Cells; Neutrophils d. Only White Blood Cells; Red Blood Cells
Last Answer : b. Nucleated Cells; Macrophages
Description : TH2 cells bind to a. MHC-11/peptide complex on APC cells. b. B cell receptors. c. MHc-1/etid complex on infected cells. d. MHC-11/peptide complex on B cells.
Last Answer : d. MHC-11/peptide complex on B cells.
Description : T cell receptors (or TCR) on CD4+ T cells A.recognize peptides not associated with MHC molecules B.recognize peptides associated with MHC class I molecules C.recognize peptides associated with MHC class II molecules D.are secreted out into the environment to bind antigens
Last Answer : C.recognize peptides associated with MHC class II molecules
Description : Which of the following is correct? A- All T Cells are CD4+ B- An epitope can have multiple antigens C- .T Cell receptors are generated by random assortment of gene cassettes D- .MHC Class II molecules are generated by random assortment of gene cassettes
Last Answer : .T Cell receptors are generated by random assortment of gene cassettes
Description : cell receptors (or TCR) on CD4+ T cells A-recognize peptides not associated with MHC molecules B- recognize peptides associated with MHC class I moleculesC- recognize peptides associated with MHC class II molecules D- are secreted out into the environment to bind antigens
Last Answer : recognize peptides associated with MHC class II molecules
Description : ……. stop us from looking at each person as a unique individual with his/her own special qualities and skills that are different from others. -Social Science
Last Answer : Stereotypes is the ans
Description : Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated? A- By rearrangements of the DNA encoding the variable regions of the heavy ... proteins can physically change their shape to bind different epitopes D- Both (a) and (b)
Last Answer : Both (a) and (b)
Description : If proteins, carbohydrates and fats are consumed together: (A) The total SDA is the sum of individual SDAs of proteins, carbohydrates and fats (B) The total SDA is more than the sum of ... ) Carbohydrates and fats lower the SDA of proteins (D) Proteins raise the SDA of carbohydrates and fats
Last Answer : Answer : C
Description : Satellite DNA is important because it (a) does not code for proteins and is same in all members of the population (b) codes for enzymes needed for DNA replication (c) codes for proteins ... and also the same degree of polymorphism in an individual, which is heritable from parents to children.
Last Answer : (d) shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children
Description : In order to function, CDKs must interact with members of a separate family of proteins named the cyclins. Do individual cyclins remain associated with the same CDKs throughout the entire cell cycle?
Last Answer : No. Separate cyclins interact with specific CDKs only during defined periods of the cell cycle.
Description : With a 30 m long coaxial cable, the bandwidth can exceed A. 100 MHz B. 1000 MHz C. 50 MHz D. 300 MHz
Last Answer : 100 MHz
Description : The following are true about antigen presenting cells (APC): a. Langerhan's cells are the antigen presenting cells of the epidermis b. CD8+ cells only recognize antigen presenting cells bearing ... necrosis factor alpha (TNF ) can turn endothelial cells into antigen presenting cells d. all above
Last Answer : all above
Description : Major Histo Compatibility Complex (MHC) is a collection of genes arrayed on A- chromosome 21 in man, chromosome 6 in mice B- chromosome 6 in man, chromosone 21 in mice C- chromosome 17in man, chromosome 6 in mice D- chromosome 6 in man, chromosome 17 in mice
Last Answer : chromosome 6 in man, chromosome 17 in mice
Description : …………is the dynamic organization within the individual that determine his unique adjustment to the environment (a) Perception ; (b) Attitude ; (c) Behavior ; (d) Personality
Last Answer : ; (d) Personality
Description : If an individual is suffering from emphysema, what organ of the body is primarily affected?
Last Answer : ANSWER: LUNGS
Description : Which organ is responsible for the synthesis of most plasma proteins? -Biology
Last Answer : answer:
Description : Are giraffes similar to dinosaurs? Or are they unique to their species?
Last Answer : Giraffes are mammals, so they’re not similar to dinosaurs. The fight scenes are pretty gruesome though. Here’s a link: http://animals.nationalgeographic.com/animals/mammals/giraffe/
Description : Which of the following is/are correct about the Rann of Kachchh ? 1. It is a flat saline marsh land 2. It is in Rajasthan 3. It is the home of the Indian Wild Ass 4. It is a unique land formation supporting several singular species of ... 1, 2 and 3 (b) 2, 3 and 4 (c) 1, 3 and 4 (d) 1, 2, 3 and 4
Last Answer : Ans: (c)
Description : Genomic islands are a. Gene Sequences Not Part Of The Chromosomal Genes. b. Adjacent Gene Sequences Unique To One Or A Few Strains In A Species. c. Acquired By HGT. d. Both B And C Are Correct.
Last Answer : d. Both B And C Are Correct.
Description : Read the following statement having two blanks (A and B). A drug used for A patients is obtained from a species of the organism B . The one correct option for the two blanks is A B (a) heart Penicillium (b) organ-transplant Trichoderma (c) swine flu Monascus (d) AIDS Pseudomonas.
Last Answer : (c) swine flu Monascus
Description : What is the name of the individual molecules that proteins must be broken?
Last Answer : Feel Free to Answer
Description : Why is variation beneficial to the species but not necessarily for the individual? -Biology
Last Answer : The various populations of organisms interact with many types of ecological niches. This is important for them to survive in given conditions. In case of any damage caused to the ecological ... to the varied conditions. Hence variation is beneficial to species, but not to the individuals.
Description : All the following statements about protooncogenes are true except (A) They are present in human beings (B) They are present in healthy cells (C) Proteins encoded by them are essential (D) They are expressed only when a healthy cell has been transformed into a cancer cell
Description : The signal sequence of proteins is cleaved off (A) On the ribosomes immediately after synthesis (B) In the endoplasmic reticulum (C) During processing in Golgi apparatus (D) During passage through the cell membrane
Description : The proteins destined to be transported out of the cell have all the following features except (A) They possess a signal sequence (B) Ribosomes synthesizing them are bound to endoplasmic reticulum (C) After synthesis, they are delivered into Golgi apparatus (D) They are tagged with ubiquitin
Description : STAT proteins are (A) Thermostat proteins of brain (B) Glucostat proteins of hepatocyte cell membrane (C) Short term activators of translation (D) Signal transduction and activators of transcription
Description : Receptors for thyroid hormones are present (A) On the cell membrane (B) Across the cell membrane (C) Inside the cells (D) In association with G-proteins
Description : Hormone receptors possess all the following properties except (A) All of them are proteins (B) They possess a recognition domain (C) They bind hormones with a high degree of specificity (D) Number of receptors in a target cell is constant
Description : Phospholipids are important cell membrane components since (A) They have glycerol (B) Form bilayers in water (C) Have polar and non-polar portions (D) Combine covalently with proteins
Description : Phospholipids are important cell membrane components because (A) They have glycerol (B) They can form bilayers in water (C) They have both polar and non polar potions (D) They combine covalently with proteins
Description : Dietary fibre denotes (A) Undigested proteins (B) Plant cell components that cannot be digested by own enzymes (C) All plant cell wall components (D) All non digestible water insoluble polysaccharide
Description : Zinc finger motif is formed in some proteins by binding of zinc to (A) Two cysteine residues (B) Two histidine residues (C) Two arginine residues (D) Two cysteine and two histidine residues or two pairs of two cysteine residues each
Description : In the illustration, the component labeled 'G' _________. EL-0031 A. is lined with cardboard to maintain a moisture (electrolyte) barrier between cells B. is a one piece container with compartments for each individual cell C. must be UL approved for shipboard use D. can only contain one cell
Last Answer : Answer: B
Description : When troubleshooting a lead-acid storage battery, a weak or dead cell is best detected by _________________. A. measuring and comparing all cells' specific gravity B. taking an open circuit ... electrolyte levels of each cell D. taking each cell's temperature with a calibrated mercury thermometer
Last Answer : Answer: A
Description : The first reaction unique to purine nucleotide synthesis is catalysed by (A) PRPP synthetase (B) PRPP glutamyl amido transferase (C) Phosphoribosyl glycinamide synthetase (D) Formyl transferase
Description : All of the following enzymes are unique to purine nucleotide synthesis except (A) PRPP synthetase (B) PRPP glutamyl amido transferase (C) Adenylosuccinate synthetase (D) IMP dehydrogenase
Description : In RNA moleule ‘Caps’ (A) Allow tRNA to be processed (B) Are unique to eukaryotic mRNA (C) Occur at the 3’ end of tRNA (D) Allow correct translation of prokaryotic mRNA
Description : It is unique that the following single antidiabetogenic hormone effectively counter acts the several diabetogenic hormones: (A) Glucagon (B) Glucocorticoids (C) Insulin (D) Growth hormone
Description : A unique by-product of glycolysis in erythrocytes is (A) Lactate (B) 1, 3-Biphosphoglycerate (C) 2, 3-Biphosphoglycerate (D) All of these
Description : Living cells have the unique ability to synthesize only _________ the form of optical isomer due to _________. (A) ‘d’ form, stereospecific enzymes (B) ‘l’ form stereospecific enzymes (C) ‘d’ form, DNA (D) ‘L’ form, DNA
Description : Which of the following reactions is unique to gluconeogenesis? (A) Lactate Pyruvate (B) Phosphoenol pyruvate pyruvate (C) Oxaloacetate phosphoenol pyruvate (D) Glucose-6-phosphate Fructose-6-phosphate
Last Answer : C