91 public questions tagged with this topic.
Actinoids are all radioactive, contrary to the incorrect option.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Actinoids and Comparison of Lanthanoids and Actinoids
In mutualism, both species benefit from the interaction, unlike parasitism, where one species is harmed.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Population Interactions - Mutualism and Amensalism
The greenhouse effect increases global temperatures by trapping heat in the atmosphere, not decreasing it.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
Resource availability affects population growth, as limited resources lead to competition and population regulation.
Ref: NCERT Class 12 Biology Chapter 11: Organisms and Populations Organism and Environment - Major Biomes Abiotic Factors
RNA interference is used to silence specific gene expression, not to enhance protein synthesis.
Ref: NCERT Class 12 Biology Chapter 10: Biotechnology and its Applications Agricultural Applications - RNAi - Nematode Resistance
Transformation does not always require a viral vector; it can be done using chemical treatments or electroporation.
Ref: NCERT Class 12 Biology Chapter 9: Biotechnology: Principles and Processes Competent Host and Gene Transfer Methods
Transformation does not require a virus; it can occur naturally or be induced using chemical treatments.
Ref: NCERT Class 12 Biology Chapter 9: Biotechnology: Principles and Processes Competent Host and Gene Transfer Methods
Cloning vectors contain an origin of replication, allowing them to replicate independently inside a host cell.
Ref: NCERT Class 12 Biology Chapter 9: Biotechnology: Principles and Processes Cloning Vectors - Plasmids Phages Cosmids Selectable Markers Ori
Inflammation is a defense mechanism that helps eliminate pathogens and repair tissues, though excessive inflammation can sometimes be harmful.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Cancer - Causes Types Treatment Metastasis
Histamine does not inhibit inflammation; instead, it promotes inflammation and allergic responses.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Common Diseases - Bacterial - Typhoid Pneumonia
Neutrophils do not produce antibodies; instead, they engulf and destroy pathogens through phagocytosis.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Common Diseases - Bacterial - Typhoid Pneumonia
Mutations do not always result in beneficial changes; they can also be harmful or neutral.
Ref: NCERT Class 12 Biology Chapter 6: Evolution Darwinism Lamarckism and Modern Synthetic Theory
