Recombinant DNA technology involves several steps in which initial step is of isolation of the DNA. Which enzymes are used in the process for the breakdown of fungal cell, plant cell and bacterial cell respectively?
Lysozyme, lipases, trypsin
Chitinase, cellulase, lysozyme
Chitinase, cellulase, trypsin
Trypsin, lipases, cellulase
Which of the following is correct regarding HIV, hepatitis B, gonorrhoea, trichomoniasis?
Trichomoniasis is a STD whereas other are not
Gonorrhoea is a viral disease whereas others are bacterial
HIV is a pathogen whereas others are diseases
Hepatitis B is eradicated completely whereas others are not
Assertion : Interferons are antiviral proteins.
Reason : Interferons are secreted by virus infected cells.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
Assertion : Inbreeding produces pureline.
Reason : It causes homozygosity.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Assertion : Parturition is induced by neural signal in maternal pituitary.
Reason : At the end of gestation period, the maternal pituitary release prolactin which causes uterine contractions.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
Assertion : Commelina shows cleistogamy.
Reason : This reduces chances of inbreeding.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Assertion : Antirrhinum is a good example to understand incomplete dominance.
Reason : Heterozygotes show characteristics of both the alleles.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion : Presence of large amounts of nutrients in water body causes excessive growth of planktonic algae.
Reason : It is due to biomagnification.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Assertion : DNA fingerprinting involves identifying differences in specific regions in DNA sequence.
Reason : DNA fingerprinting is the basis of paternity testing.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : All pathogens are parasites but all parasites are not pathogens.
Reason : Majority of the parasites confer benefits to the host.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
C.
If assertion is true but reason is false
Parasitism is a relationship between two living organisms of different species in which one organism called parasite obtains its food directly from another living organism called host. Majority of the parasites harm the host; they may reduce the survival, growth and reproduction of the host and reduce its population density. Pathogens are disease-causing microorganisms which get benefit by causing harm to host organism. Pathogens such as viruses, bacteria, fungi, protozoans, helminths, insects etc., reproduce or multiply inside the host organism and therefore, they get the opportunity to complete the life cycle and spread their population.