Which one of the following is now being commercially produced by biotechnological procedures?
Nicotine
Morphine
Quinine
Quinine
D.
Quinine
Nowadays, genetically engineered insulin is being produced at commercial level. the biotechnological procedure involves the synthesis of two DNA sequences corresponding to A and B insulin chains. The two DNA sequences or genes are made to fuse with plasmids and later allowed to form insulin chains.
Select the correct matching of a hormone its source and function.
Hormone |
Source |
Function |
Vasopressin |
Posterior Pituitary |
Increases loss of water through urine |
Hormone |
Source |
Function |
Norepinephrine |
Adrenal medulla |
Increases heartbeat, rate of respiration and alertness |
Hormone |
Source |
Function |
Glucagon |
Beta-cells of Islets of Langerhans |
Stimulates glycogenolysis |
Hormone |
Source |
Function |
Glucagon |
Beta-cells of Islets of Langerhans |
Stimulates glycogenolysis |
Fastest distribution of some injectible material /medicine and with no risk of any kind can be achieved by injecting it into the
muscles
arteries
veins
veins
Which one of the following statements about the particular entity is true?
Centromere is found in animal cell which produces ester during cell divison
the gene for producing insulin is present in every body cell
Nucleosome is formed of nucleotides
Nucleosome is formed of nucleotides
Which domestic sewage mixes with river water
small animals like rats will die after drinking river water
the increased microbial activity releases micronutrients such as iron
the increased microbial activity uses up dissolved oxygen
the increased microbial activity uses up dissolved oxygen
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements.
A) Wings of butterfly and birds look alike and are the results of ...... (i) .... evolution.
B) Miller showed that CH4, H2, NH3, and .....(i) ....., when exposed to electric discharge in a flask resulted in the information of ......(ii) .....
C) The vermiform appendix is a ..... (i) ..... organ and a ......(ii) ..... evidence of evolution.
D) according to Darwin evolution took place due to ....(i) ...... and .....(ii) .... of the fittest.
(D)-(i) small variations, (ii) survival, (A)-(i) convergent
(A)- (i) convergent, (B)-(i) oxygen,(ii) nucleosides
(B)-(i) water vapour, (ii) amino acids (C)-(i) rudimentary, (ii) anatomical
(B)-(i) water vapour, (ii) amino acids (C)-(i) rudimentary, (ii) anatomical
The most apparent change during the evolutionary history of Homo sapiens is traced in
loss of body hair
walking upright
shortening of the jaws
shortening of the jaws
Which one of the following is most appropriately defined?
Host is an organism, which provides food to another organism
Amensalism is a relationship in which one species is benefited whereas the other is unaffected
Predator is an organism that catches and kills other organism for food
Predator is an organism that catches and kills other organism for food