During eukaryotic protein synthesis, stress conditions result in activation of specific kinases leading to phosphorylation of a key translation initiation factor that inhibits protein synthesis from a large number of cellular mRNA. Which one of the following factors is the kinase?

TLS Online TPP Program

#Question id: 2529

#Unit 2. Cellular Organization

Cell walls commonly are classified into two major types. This classification is based not on structural or biochemical differences;

A) primary walls and

B) secondary walls

i) walls formed during cell growth

ii) walls that are formed after cell enlargement stops

iii) multilayered walls that are strengthened and waterproofed by lignin

iv) Usually they are thin and simple, but some times may be thick and multilayered, such as those found in collenchyma or in the epidermis

v) highly specialized in structure and composition, reflecting the differentiated state of the cell

Which of the following is the correctly represents features of primary and secondary walls?

TLS Online TPP Program

#Question id: 32587

#Unit 2. Cellular Organization

What happens to the endoplasmic reticulum (ER) and the Golgi apparatus when cells are treated with a drug that depolymerizes microtubules, such as colchicine or nocodazole?

TLS Online TPP Program

#Question id: 32276

#Unit 2. Cellular Organization

Which amino acid residue's amide nitrogen serves as the attachment site for N-linked oligosaccharides?

TLS Online TPP Program

#Question id: 8888

#Unit 9. Diversity of Life Forms

In a small stream, you pick up a rock and observe many small, flattened worms crawling on its undersurface. You decide that they belong to the phylum Platyhelminthes. To which class do they probably belong?

TLS Online TPP Program

#Question id: 33280

#Unit 2. Cellular Organization

During spindle assembly checkpoint, any kinetochore that is not properly attached to microtubules sends out a diffusible negative signal that blocks: