Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
Callose deposition is often associated with specific plant responses. Which of the following scenarios is LEAST likely to induce callose deposition?
Wounding or pathogen attack
Abscission zone formation
Pollen tube growth
Rapid cell elongation during growth
Which enzymatic activity is primarily responsible for loosening the cell wall structure during cell expansion?
Cellulase
Pectin methylesterase
Expansin
Lignin peroxidase
The presence of which compound in the cell wall significantly contributes to the resistance of woody tissues to decay and compression?
Suberin
Cutin
Pectin
Lignin
A mutation in a cell leads to the accumulation of misfolded proteins in the ER lumen. Which of the following cellular processes is MOST directly affected?
Autophagy
N-linked glycosylation
ER-associated degradation (ERAD)
Vesicular transport from ER to Golgi
Which organelle is primarily responsible for the synthesis of plasmalogens, a class of ether phospholipids found in myelin sheaths?
Smooth endoplasmic reticulum
Golgi apparatus
Lysosomes
Peroxisomes
Mannose-6-phosphate receptors are crucial for targeting proteins to which cellular compartment?
Mitochondria
Nucleus
Lysosomes
Peroxisomes
Which component of the cytoskeleton is directly involved in the movement of chromosomes during cell division?
Microfilaments
Intermediate filaments
Microtubules
Keratin filaments
Defects in which organelle can lead to Zellweger syndrome, a severe peroxisomal biogenesis disorder?
Lysosomes
Endoplasmic reticulum
Golgi apparatus
Peroxisomes
The cell membrane maintains a distinct phospholipid composition between its inner and outer leaflets. Which of the following transport mechanisms is primarily responsible for establishing and maintaining this asymmetry?
Simple diffusion
Facilitated diffusion
Flippases
Ion channels
Which type of membrane protein is MOST likely to be involved in cell-cell recognition and adhesion?
Peripheral membrane proteins
Integral membrane proteins without glycosylation
Glycoproteins
Channel proteins