Homework Answers
1) building blocks of DNA and RNA are called Nucleotides and is made of A) sugar, B) Phosphate, and C) Nitrogenous Base.
2) A) DNA is double-stranded and RNA is single-stranded
B) RNA contains Ribose sugar and DNA contains Deoxyribose sugar
C) in RNA uracil is present instead of thymine
3) the main function of DNA is the storage of genetic information, and whereas RNA acts as an intermediate between DNA and protein that it carries information present in DNA to protein. ( information for the protein is stored in the DNA)
4)
A) Basepairs
Adenine - Thymine
Cytosine-Guanine
5) 2 strands of DNA are held together by hydrogen bonds between nitrogen bases these nitrogens bases help to unwind the strands to get singles stranded DNA during replication and translation if the bonds between nitrogen bases were covalent bonds lots of energy is required to separate both strands.
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DNA Extraction Watch DNA extraction video DNA Modeling Post-laboratory questions: New lab manual page 44 1. Why do we use a commercially grown fruit in this case strawberries) for our DNA extraction? 2. What does the detergent accomplish in a DNA extract? 3. What does the salt accomplish in a DNA extract? 4. What does the addition of rubbing alcohol isopropanol) accomplish in the DNA extract? 5. Why does the solution become viscous after the addition of shampoo (detergent)? Students...
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look over the expeirment instructions in photos 1-3 then
answer questions 1-4 in the last photo
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