Select the two correct statement out of the four statement given below about “ Lac opern”(AIPMT-2010)
(i) Glucose or galactose may bind with the repressor and inactivate it
(ii) In the absence of lactose the repressor bind with the operator region
(iii) The Z -gene codes for permease
(iv) This was elucidated by Francois Jacob and Jacques Monod
The correct statements are

Related MCQs

• Some of the steps involved in the production of humulin are given below choose the correct sequence (i) synthesis of gene (DNA) for human insulin antibicially (ii) culturing recombinant E.Coli in bioreactors (iii) Purification of humulin (iv) Insertion of human insulin gene into plasmid (v) Introduction of recombinant Plasmid into E.Coli (vi) Extraction of recombinant gene product From E.Coli
• E coli cells with a mutant z gene of the lac operon cannot grow in medium containing only lactose as the source of energy because (AIPMT - 2005)
• Match the following. Column – 1 Column – 2 (p) National Bureau of Plant (I) Conservation of biodiversity Genetic Resources (q) World Wild life Fund (ii) Conservation of gene of domesticated animal (r) National Bureau of fish (iii) Conservation of gene of crop plant Genetic Resources (s) National Bureau of Animal (iv) Conservation of gene of Economically valuable Genetic Resources species
• Match the column I and column II P Radio active andibody (a) substance that can be constructed in the laboratory Q Artificial gene (b) substance that can be used to identify colonies of geneticully engineered bacteria that makes particular gene product R Amplification (c) Abnormal enhanced replication of a plasmid many copies of plasmid in each cell S To produce clones (d) A large population of idential cells T short gun cloning (e) The use of entire array of genes of an organism in order to obtain particular gene product P Q R S T
• Which of the following option is correct for the correct matched pairs for Column I and II and Column III Column - I Column II Column III (a) aqueous humor (i) Depression on retina (f) origin of opticnerve (b) Vitreous humor (ii) watery fluid (g) secreted by retina (c) Blind spot (iii) Absence of sensitive cells (h) presence of cone cell (d) Fovea (iv) thicfluid (i) secreted by Ciliary body
• In relation of lac operon in E-coli , Which protein is not regulated by the repressor ?
• Match the following Column-I Column-II (P) Rhizobium (i) Leguminous (Q) Anabaena (ii) Autotroph N2-fixative (R) Azatobactor (iii) Freeliving N2-fixative (S) Glomus (iv) Phosphorus absorption (a) (P-i) (Q-ii) (R-iii) (S-iv) (b) (Q-i) (P-ii) (R-iii) (S-iv) (c) (P-iii) (Q-i) (R-ii) (S-iv) (d) (P-i) (Q-ii) (R-iv) (S-iii) Statement (A) and Reason (R) Type Question
• Column I represents diseases and column II represents their symptoms. Which of the following pairs are correct match for them (Guj.CE.T.2006) ColumnI ColumnII (P) Asthma (i) Recurring of bronchitis (Q) Emphysema (ii) Accumulation of W.B.CS in alveolus (R) Pneumonia (iii) Allergy (a) P = iii, Q = ii, R = i (b) P = iii, Q = i, R = ii (c) P = ii, Q = iii, R = i (d) P = ii, Q = i, R = iii
• Match list I with list II and select the correct answer using the codes given below the lists. List I List II P. Total stem parasite I Loranthus Q. Assimilatory root II Pothos R. clinging root III Tinospora S. partial parasite IV cuscuta P Q R S
• Match the terms in column-I with suitable terms in column-II Column – I Column – II P C6H10O5 i Glyceraldehyde Q C3H6O3 ii Galactose R C5H10O4 iii Ribulose S C6H12O6 iv Deoxy ribose sugar