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#Question id: 1973


Clonal selection is an explanation for how

#Section 2: General Biology
  1. a single type of stem cell can produce both red blood cells and white blood cells.

  2. V, J, and C gene segments are rearranged.

  3. an antigen can provoke production of high levels of specific antibodies.

  4. HIV can disrupt the immune system.


Answer:- Option(s): 3


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TLS Online TPP Program

#Question id: 100

#Section 2: General Biology

Which of the following contain NeuNAc residues and sulfated sugars, and their negative charges contribute to the viscosity of mucins.

TLS Online TPP Program

#Question id: 103

#Section 2: General Biology

Lipids may be either hydrophobic or ________.

TLS Online TPP Program

#Question id: 104

#Section 2: General Biology

Which of the following is the simplest lipids but they may be a part of or a source of many complex lipids.

TLS Online TPP Program

#Question id: 105

#Section 2: General Biology

Isoprenoids are lipids which neither contain nor are derived from fatty acids and include

A) steroids.

B) waxes.

C) terpenes.

TLS Online TPP Program

#Question id: 106

#Section 2: General Biology

fatty acid designated as 20:0 is ________, while one that is designated 20:3 D5,8,11 is

TLS Online TPP Program

#Question id: 107

#Section 2: General Biology

Ethanolamine, serine and choline can be cleaved from glycerophospholipids by treatment with

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