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1. What is secreted from both natural killer (NK) cells and cytotoxic T (TC) cells from...

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Biology

1. What is secreted from both natural killer (NK) cells andcytotoxic T (TC) cells from holes in the cell membranes leading tothe eventual destruction of the target?

a) Lysomes

b) Perforin

c) Complement

d) Bacteriocin

2. What is the name for a mutagen that insets itself between 2base pairs so that an extra base is added during DNA replication?Ethidium bromide DNA  is an example.

  1. Base analog
  2. Transposon
  3. Ionizing
  4. Intercalating agent
  1. Which of the following is an example of a conditionally lethalmutation?
  1. Inversion
  2. Temperature-sensitive mutation
  3. Translocation
  4. Thymine-thymine dimer
  1. Insertion equals mutation for all biological mutagens targetingbacteria
  1. True
  2. False
  1. Which term below describes cells that can take up DNA and betransformed? These cells can be generated in the lab usingCaCl2, glycerol, and cold temperature
  1. Virulent
  2. Competent
  3. Reactive
  4. Compatible

Answer & Explanation Solved by verified expert
4.2 Ratings (876 Votes)
1 Perforin a protein molecule secreted by Tcell and NK cell creates pores in the target cell and kill it eventually Hence perforin is the correct answer 2 Intercalating agents are flat molecules    See Answer
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