180 public questions tagged with this topic.
Cancer cells lose the property of contact inhibition, allowing them to grow uncontrollably and invade surrounding tissues.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Cancer - Causes Types Treatment Metastasis
Cancer cells lose the property of contact inhibition and undergo uncontrolled cell division, forming tumors.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Cancer - Causes Types Treatment Metastasis
Macrophages and neutrophils are the primary phagocytic cells that engulf and digest pathogens.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Common Diseases - Protozoan - Malaria Amoebiasis
Ribosomes are not membrane-bound organelles; they are freely floating in the cytoplasm or attached to the rough ER.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Human Genome Project and DNA Fingerprinting
Ribosomes are made of ribosomal RNA (rRNA) and proteins, and they facilitate protein synthesis.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Human Genome Project and DNA Fingerprinting
RNA is less stable than DNA because it has a reactive hydroxyl (-OH) group at the 2' position of its ribose sugar.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
Ribosomes **are not membrane-bound organelles**; they are found freely in the cytoplasm or attached to the rough ER in eukaryotes.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
The sodium-potassium pump actively transports sodium (Na⁺) out of the neuron and potassium (K⁺) into the neuron.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Sensory Organs - Ear - Structure and Physiology of Hearing and Balance
The sodium-potassium pump transports sodium (Na⁺) out of the neuron and potassium (K⁺) into the neuron, not the other way around.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Sensory Organs - Ear - Structure and Physiology of Hearing and Balance
Nissl’s granules are involved in the synthesis of neurotransmitters and proteins in neurons.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The sodium-potassium pump requires ATP to actively transport sodium and potassium ions across the membrane.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Nerve Impulse - Resting Potential Action Potential and Transmission
The cell body (or soma) contains the nucleus and most of the neuron's organelles.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Neural System and Neuron - Structure Types and Functions
