NEB Question Browser

'DNA is known as the universal genetic material, where as RNA is not'. Justify this statement. Describe DNA with reference to its chemical composition, Watson and Crick's model with labelled diagram and function.

Describe the process of crossing over during prophase-I of Meiosis-I with the help of labelled diagrams. Explain how the absence of crossing over would affect genetic variation of offspring.

Tendons connect muscles to bones. Why are they less elastic in nature?

Which vaccine is prepared using DNA-recombinant technology and contains only a specific antigen, reducing adverse reactions?

Respiratory disorders occur when there is problem in any part of the respiratory system. Identify any four respiratory disorders prevalent in your community. Also, suggest some methods of prevention.

Adrenal glands also known as suprarenals are located above the kidneys and have outer cortex and inner medulla region. Name the different groups of hormones secreted by the different regions of adrenal cortex. Mention specific functions of each. Describe the disorders of hormones secreted by adrenal cortex.

Identify the given figure and name the parts labeled by A and B.

Describe the internal structure of a monocot root with diagrammatic figure.

A plant species has chromosomes. A mutant plant is found to have chromosomes. Identify the type of chromosomal mutation and, on this basis, differentiate between aneuploidy and euploidy.

Describe the process of oogenesis, with the help of schematic diagram.

What is called the process in which the shrinkage of protoplasm of fresh plant cell kept in hypertonic solution?

What is the term called for the addition of individuals in a population from outside or from another population?

Reproduction is a process of continuation of human race. Describe female reproductive system with a well labelled diagram of human being. How would you explain ovulation in female human?

Nephrons are the structural and functional unit of kidney. Illustrate the structure of nephron with a labelled diagram. What would happen if ADH is secreted insufficiently?

Which of the following terms describes pollen tube entry into the embryo sac of ovule through micropyle during fertilization?

Label part A, B, C, D.

Mention the causative agent, mode of transmission, symptoms of pulmonary tuberculosis. Highlight various strategies for its prevention. Why is it called “disease of poverty”?

Scientists proposed different models of DNA replication. Identify the biologically feasible model that occurs during the S-phase of interphase. Explain the mechanism of this replication process, highlighting the role of enzymes, and illustrate with necessary diagrams

Explain how color blindness is inherited as a sex-linked trait in humans. Illustrate the inheritance of colour blindness using suitable genetic crosses and analyze the resulting phenotypic outcomes. Based on your analysis, justify why this pattern is referred to as criss-cross inheritance.

Which of the following structures in a plant is primarily responsible for regulating transpiration?