189 public questions tagged with this topic.
Genetic diversity enables populations to adapt to changing environmental conditions and is essential for evolution.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Biodiversity - Levels - Genetic Species Ecological
According to the 10% Law, only 10% of the energy from one trophic level is transferred to the next, while the rest is lost as heat.
Ref: NCERT Class 12 Biology Chapter 12: Ecosystem Ecosystem Services and Functions
Brood parasitism occurs when a species, such as a cuckoo, lays its eggs in the nest of another species, relying on them to raise its young.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Parasitism and Commensalism
Endonucleases cut DNA at specific internal sites, unlike exonucleases, which remove nucleotides from the ends.
Ref: NCERT Class 12 Biology Chapter 9: Biotechnology: Principles and Processes Tools - Restriction Enzymes - Molecular Scissors
DNA ligase is responsible for joining DNA fragments by forming phosphodiester bonds.
Ref: NCERT Class 12 Biology Chapter 9: Biotechnology: Principles and Processes Principles of Biotechnology - Genetic Engineering
Saccharomyces cerevisiae (yeast) is used in the fermentation of sugars to produce ethanol.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Household Products - LAB Curd Cheese Dough
Lactobacillus ferments lactose in milk, producing lactic acid that leads to curd formation.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Household Products - LAB Curd Cheese Dough
Monascus purpureus produces statins, which act as cholesterol-lowering agents.
Ref: NCERT Class 12 Biology Chapter 8: Microbes in Human Welfare Microbes in Household Products - LAB Curd Cheese Dough
In humans, B-lymphocytes mature in the bone marrow before they circulate in the immune system.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immune System - Lymphoid Organs Cells Antibodies - CMI HMI
The thymus is a primary lymphoid organ where T-lymphocytes mature before they become active in immunity.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immune System - Lymphoid Organs Cells Antibodies - CMI HMI
IgE antibodies are involved in allergic reactions by triggering the release of histamines from mast cells.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immune System - Lymphoid Organs Cells Antibodies - CMI HMI
Allergic reactions are not caused by bacterial infections but occur due to an overreaction of the immune system to harmless substances.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immune System - Lymphoid Organs Cells Antibodies - CMI HMI
