Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?
Chorion
Allantois
Yolk sac
Amnion
A transgenic food crop, which may help in solving the problem of nightblindness in developing countries is
Flavr savr tomatoes
Starlink maize
Bt soyabean
Golden rice
Which of the following bio-engineered bacteria is utilized for cleaning of marine oil slicks?
Escherichia coli
Pseudomonas syringae
Pseudomonas putida
Rhizoctonia solani
Cells obtained from cancerous tumours are known as
Hybridomas
Myelomas
Lymphocytes
Monoclonal cells
When pollen tube enters through micropyle, the process is called
Porogamy
Chalazogamy
Mesogarny
Apogamy
AIDS virus contains
RNA with protein
DNA with protein
DNA without protein
bNA only
D.
bNA only
AIDS is caused by the Human Immunodeficiency Virus (HIV). It is a lentivirus belonging to the family-Retroviridae. The core of this virus contains two single strands of RNA molecules (genetic material) proteins and the enzyme reverse transcriptase.