$$ \text { Match List I with List II: } $$
| $$ \text { List-I } $$ |
$$ \text { List-II } $$ |
||
|---|---|---|---|
| A. | Genetically modified organism | I. | Agrobacterium tumefaciens |
| B. | Thermostable DNA polymerase | II. | Bt cotton |
| C. | Ti plasmid | III. | Thermus aquaticus |
| D. | pBR322 | IV. | Escherichia coli |
A-II, B-III, C-I, D-IV
A-II, B-I, C-IV, D-III
A-I, B-IV, C-III, D-II
A-I, B-II, C-IV, D-III
$$ \text { Match List I with List II : } $$
| $$ \text { List-I } $$ |
$$ \text { List-II } $$ |
||
|---|---|---|---|
| A. | Productivity | I. | Gross primary productivity minus respiration losses |
| B. | Net primary productivity | II. | Rate of formation of new organic matter by consumers |
| C. | Gross primary productivity | III. | Rate of biomass production |
| D. | Secondary productivity | IV. | Rate of production of organic matter during photosynthesis |
A-III, B-I, C-IV, D-II
A-I, B-II, C-III, D-IV
A-I, B-III, C-IV, D-II
A-III, B-I, C-II, D-IV
Since the origin and diversification of life on Earth, there have been five episodes of mass extinction of species. How is the sixth extinction, which is in progress, different from the previous episodes?
The present net species extinction rate is zero.
The current species extinction rate is nearly 10 times faster than in previous episodes.
The present species extinction rates are 100 to 1000 times faster than in the pre-human times.
The current species extinction rates are far lower than those in previous episodes.
Alpha-helix is found in which level of protein structure?
Secondary structure
Tertiary structure
Primary structure
Quaternary structure
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