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TLS Online TPP Program

#Question id: 1974

A person exposed to a new cold virus would not feel better for one to two weeks because

#Unit 4. Cell Communication and Cell Signaling

  1. specific B cells and T cells must be selected prior to a protective response.

  2. it takes up to two weeks to stimulate immunologic memory cells.

  3. no memory cells can be called upon, so adequate response is slow.

  4. antigen receptors are not the same as for a flu virus to which she has previously been exposed.

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TLS Online TPP Program

#Question id: 33465

#Unit 1. Molecules and their Interaction Relevant to Biology

GC Minor groove in DNA molecule show chemical information as
TLS Online TPP Program

#Question id: 33466

#Unit 1. Molecules and their Interaction Relevant to Biology

GC Major groove in DNA molecule show chemical information as
TLS Online TPP Program

#Question id: 33467

#Unit 1. Molecules and their Interaction Relevant to Biology

Sugar pucker conformation for A-DNA is 
TLS Online TPP Program

#Question id: 33468

#Unit 1. Molecules and their Interaction Relevant to Biology

The atoms that participate in the hydrogen bonding of triplex DNA, are often referred to as Hoogsteen positions are as
TLS Online TPP Program

#Question id: 33469

#Unit 2. Cellular Organization
TLS Online TPP Program

#Question id: 33470

#Unit 2. Cellular Organization