44 public questions tagged with this topic.
Biodiversity contributes to ecosystem productivity and stability. Habitat loss and fragmentation, overexploitation, alien species invasions, and co-extinctions are the major causes of biodiversity loss described in NCERT.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Loss of Biodiversity - Causes - Habitat Loss Overexploitation
Biodiversity loss adversely affects ecosystem services such as pollination, nutrient cycling, climate regulation, and water purification.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Species-Area Relationship
Genetic diversity provides the raw material for natural selection and evolution.
Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Biodiversity - Levels - Genetic Species Ecological
Molecular diagnostics does not rely solely on light microscopy; it uses advanced techniques like PCR and_x000D_ hybridization for accurate detection.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Biosafety and Overview of Applications
Molecular diagnostics uses techniques like PCR and DNA probes for accurate detection, not just visual_x000D_ inspection.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Medical Applications - Molecular Diagnosis - PCR ELISA
Molecular diagnostics uses advanced techniques like PCR and DNA probes, not just microscopic_x000D_ observations, for accurate detection of diseases and genetic mutations.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Medical Applications - Molecular Diagnosis - PCR ELISA
Somatic hybridization is a method of asexual reproduction, not sexual reproduction.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Agricultural Applications - RNAi - Nematode Resistance
Antibodies do not directly destroy bacteria; they mark them for destruction by immune cells.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immune Disorders - Allergies Autoimmunity and AIDS
T-helper cells do not directly kill infected cells; they assist by activating B-cells and other immune responses.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Innate Immunity - Barriers and Interferons
Translation occurs in the cytoplasm, where ribosomes decode mRNA into a protein.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Genetic Code and Translation
The genetic code is non-overlapping, meaning each nucleotide is part of only one codon at a time.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Genetic Code and Translation
The poly-A tail is added to the 3' end of mRNA, not the 5' end.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Post-Transcriptional Modifications - Capping Splicing Polyadenylation
