MCQ
Large gap between natality and mortality will result in:
- ALess old persons in relation to children
- BMore old people in population
- CLow dependency ratio
- DProsperous country
Explanation:
The Large gap between natality and mortality will result in more old people in the population. As natality is the ratio of the number of births to the size of the population and mortality is the state of being subject to death.
Large gap between natality and mortality shows an increased life span. It ensures the longevity and survival of old people. This results in the increase of old people in the population. It also makes the population size to increase.
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| Column – I | Column $- II$ |
| $(1)$ Study of disease | $(p)$ Transgenic mice |
| $(2)$ Biological products | $(q)$ Testing toxicity of drug |
| $(3)$ Vaccine safety | $(r)$ Rheumatoid arthritis |
| $(4)$ Chemical safety | $(s)\; \alpha - 1$ Antitrypsin |
|
$I$ |
$II$ |
$III$ |
|
$(a)$ PCR |
$(i)$ Specific base sequence |
$p.$ Taq polymerase |
|
$(b)$ Downstream processing |
$(ii)$ Inheritable gene |
$q.$ Ampicillin resistant |
|
$(c)$ Restriction endonucleasel |
$(iii)$ Amplification of $DNA$ |
$r.$ E. coli |
|
|
$(iv)$ Product separation and modification |
$s.$ Quality control |
$I$. The recombinant $DNA$ technology is used for production of therapeutic drugs which are safe and effective
$II$. It avoid unwanted immunological responses, commonly observed with similar products isolated from non-human sources
$III$. About thirty recombinant therapeutics have been approved for human use in the world including India
Which of the statements given above are correct?