A pre-tRNA intron is excised in one step 

Finally, hydrolysis of GTP and ATP is required to join the two tRNA halves generated by cleavage on either side of the intron.

TLS Online TPP Program

#Id: 8174

#Unit 2. Cellular Organization

Sets of SNARE Proteins responsible for the eventual fusion of a vesicle with the target membrane:

Vesicle-specific membrane protein, v-SNARE

Target membrane contains t-SNARE

TLS Online TPP Program

#Id: 8175

#Unit 2. Cellular Organization

SNARE-mediated fusion occurs during exocytosis of secreted proteins. In this case, 

v-SNARE, are VAMP 

t-SNAREs are syntaxin & SNAP-25

TLS Online TPP Program

#Id: 8176

#Unit 2. Cellular Organization

SNARE complex is disassembled by ATP-dependent reaction mediated by cytosolic proteins, NSF & α-SNAP

TLS Online TPP Program

#Id: 8177

#Unit 2. Cellular Organization

In plant cells,

Golgi apparatus serves as the site at which the complex polysaccharides of the cell wall (pectin & hemicellulose) are synthesized.

TLS Online TPP Program

#Id: 8178

#Unit 2. Cellular Organization

Peroxisomes major sites of oxygen utilization (carrying out oxidative reactions).

TLS Online TPP Program

#Id: 8179

#Unit 2. Cellular Organization

Peroxisomes contain oxidative enzymes: catalase and urate oxidase.