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?

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#Question id: 28720

#Unit 2. Cellular Organization

Which of the following protein does not belongs to the small monomeric GTPase super family?

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#Question id: 12367

#Unit 1. Molecules and their Interaction Relevant to Biology

RNA contains ribose sugar. What could happen due the presence of extra hydroxyl group?

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#Question id: 33359

#Unit 1. Molecules and their Interaction Relevant to Biology

The protein calcineurin binds to the protein calmodulin with an association rate of 8.9 X10³ M^-1s^-1 and an overall dissociation constant, Kd, of 10 nM. The dissociation rate, kd

TLS Online TPP Program

#Question id: 4112

#Unit 3. Fundamental Processes

Which of the following is the structure of the nucleotide at the branch site of a spliced intron?

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#Question id: 13067

#Unit 13. Methods in Biology

The first immunoassay formats described were methods based on the ____ reaction, which is characterised either by gel formation in a liquid phase or as an opaque band in an agar plate assay.