base, pentose sugar, phosphate group and amino acids QUESTION 1 y Question Compl

Question

base, pentose sugar, phosphate group and amino acids

QUESTION 1 y Question Completion Status: Griffith's classic experiment with mice proved that was a type of horizontal gene transfer. transformation transduction replication conjugation QUESTION 2 Which type of horizontal gene transfer is associated with a bacteriophage intermediary? replication conjugation O transduction transformation QUESTION 3 The parts of a nucleic acid are: nucleotides base and pentose sugar O base, pentose sugar and phosphate group

Explanation / Answer

1. Option first is the correct answer. Transformation is the process by which a bacteria can transfer the DNA to another bacteria. This type of transfer of DNA is known as horizontal gene transfer. This concept was first established by Griffith in 1928. Griffith showed that an extract from virulent but killed Streptococcus pneumonia cells when mixed with a living culture of nonvirulent S. pneumoniae it causes virlency within a proportion of these cells which indicate horizontal transfer of genetic material.

2. Option 3rd is the correct answer. Bacteriophage is a virus which attack on bacteria and when move from one bacteria to other it transfer also the genetic material of bacteria.

3. Option 3rd is the correct answer. Nucleic acids are composed of nitrogenous bases (adenine, guanine, thymine, cytosine and uracil), sugar (pentose sugar) and phosphates (phosphodiester bond between sugar and bases).

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