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TLS Online TPP Program

#Question id: 1998

Jenner successfully used cowpox virus as a vaccine against the virus that causes smallpox. Why was he successful even though he used viruses of different kinds?

#Section 2: General Biology

  1. The immune system responds nonspecifically to antigens.

  2. The cowpox virus made antibodies in response to the presence of smallpox.

  3. Cowpox and smallpox are antibodies with similar immunizing properties.

  4. There are some antigenic determinants common to both pox viruses.

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TLS Online TPP Program

#Question id: 3265

#Section 3: Genetics, Cellular and Molecular Biology

If the curve shifts to the left or to the right, there is no gene flow, and the population size consequently increases over successive generations, then which of these is (are) probably occurring?
TLS Online TPP Program

#Question id: 1435

#Section 3: Genetics, Cellular and Molecular Biology

Direct-acting carcinogens are those that:
TLS Online TPP Program

#Question id: 1957

#Section 2: General Biology

What is a graft between different members of the same species termed?
TLS Online TPP Program

#Question id: 170

#Section 2: General Biology

Desmosine, an uncommon amino acid is derived from
TLS Online TPP Program

#Question id: 3778

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following effects might be caused by reduced or very little active telomerase activity?