Consider the following four statements (a-d) and select the options which includes all the correct ones only :-
(a) Transforming principle explained by Griffith was later identified as DNA
(b) Histones are rich in acidic amino acids lysines and arginines.
(c) In RNA, every nucleotide has -OH group present at 2-position of ribose.
(d) In a ds DNA the two chains have antiparallel polarity.

Consider the following four statements (a-d) and select the option which includes all the correct ones only? (a) Genus is a group of related species which has more characters in common in comparison to species of other genera. (b) Classification is not a single step process. (c) Solanum, Petunia and Datura are placed in family convolvulaceae (d) Taxonomic categories are both distinct biological entities and morphological aggregates.

nsider the following four statements (a-d) and select the option which includes all the correct ones only (a) Genus is a group of related species which has more characters in common in comparison to species of other genera. (b) Classification is not a single step process. (c ) Solanum, Petunia and Datura are placed in family convolvulaceae. (d) Taxonomic categories are neither distinct biological entities nor merely morphological aggregates.

Consider the following four statements (a-d) and select the option which includes all the correct ones only: a) B-lymphocytes forms cellular barrier of innate immunity. b) HLA antigens are called as transplantation antigens c) Subsequent encounter with the same pathogen elicits a highly intensified anamnestic response. d) Interferons protect non-infected cells from further viral infection.

Consider the following four statement (a-d) and select the option which includes all the correct ones only. a) AIDS is a congenital disease. b) Sloughed cell of benign tumour reach distant site this is called metastasis c) MRI uses strong magnetic field and non ionising radiation to detect pathological changes in living tissue. d) AIDS & hepatitis - B are transmitted through. Infected blood.

Consider the following four statements (A-D) and select the option which includes all the correct ones only? a) In immunisation, a preparation of antigenic protein is induced in the body. b) If a person is infected with deadly microbe we need to directly inject vaccine. c) Vaccine generate B & T memory cell. d) Snake anti venom is an example of active immunisation.

Consider the following four statements (a-d) and select the option which includes all the correct ones only :- (a) Faecal accumulation in the rectum initiates a neural reflex causing an urge for its removal. (b) Reflex action for vomiting is controlled by medulla. (c) Irregular bowel movements causeconstipation (d) Bowel movement cause "Vomiting is the ejection of stomach contents through Anus.

Consider the following four statements (a-d) about AIDS/ HIV and select the option which includes all the correct ones only. a) Caracterised by decrease in number of killer T- cells b) HIV virus has 2 identical molecule of ds RNAs c) AIDS spread through touch, physical contact, hugging, kissing d) There is always a time lag between the infection and appearance of AIDS symptoms.