481: In the context of the developments in Bioinformatics, the term 'transcriptome', sometimes seen in the news, refers to
(a) a range of enzymes used in genome editing
(b) the full range of mRNA molecules expressed by an organism
(c) the description of the mechanism of gene expression
(d) a mechanism of genetic mutations taking place in cells
482: How do most insects respire?
(a) Through gills
(b) By tracheal system
(c) By lungs
(d) Through skin
Explanation:
Insects mostly respire by 'tracheal system'. In this system, gas is directly tresported to the tissues by air filled tubules that bypass blood. The pores of the outside, called spiracles, delivers the gases of respiration.
483: Assertion (A): Existence of human life on Venus is highly improbable.
Reason (R): Venus has extremely high level of carbon dioxide in its atmosphere.
(a) Both A and R are individually true and R is the correct explanation of A.
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false.
(d) A is false but R is true.
Explanation:
Venus second closest planet after Mercury to the Sun is often considered 'Earth's twin' because of their close proximity in size, mass (weight) and density. Existence of human life is highly improbable because of high levels CO2 in its atmosphere.
484: Which of the following diseases can be transmitted from one person to another through tattooing?
1. Chikungunya
2. Hepatitis B
3. HIV-AIDS
Select the correct answer using the codes given below.
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
Explanation:
Hepatitis B and HIV-AIDS can be transmitted from one person to another through tattooing, where as Chikungunya is transmitted through Aedes aegypti mosquitoes.
485: Mission Indradhanush' launched by the Government of India pertains to
(a) immunization of children and pregnant women
(b) construction of smart cities across the country
(c) Indias own search for the Earth-like planets in outer space
(d) New Educational Policy