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 sometimes 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 correctly represents features of primary and secondary walls?

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#Question id: 12366

#Unit 1. Molecules and their Interaction Relevant to Biology

During nucleotide formation addition of purines and pyrimidines on sugar residue occurs at Nitrogen position no.

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#Question id: 2776

#Unit 2. Cellular Organization

There are five major types of histone proteins, but only four of them are considered as core histones. Which one of the following is NOT considered a core histone protein?

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#Question id: 28487

#Unit 5. Developmental Biology

first visible sign of limb development is the___

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#Question id: 19131

#Unit 12. Applied Biology

How analyte and biological substances interacted in a biosensor?

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#Question id: 1052

#Unit 4. Cell Communication and Cell Signaling

The correct order for the stages of a phage infection is: