Bio 30 Molecular Genetics Questions and Verified
Answers
Chargaff's Rule ( 1940's )
Ans: Nitrogenous bases are not in equal amounts. Same amount of Adenine
and Thymine, and Cytosine and Guanine. (Base Pairs A + T and C + G)
Rosalind Franklin ( X-ray )
Ans: Took pictures of DNA using x-ray. She mixed DNA with water to find
the nitrogenous bases and realized that they were on the inside and the
sugars and phosphates are on the outside.
Watson and Crick
Ans: Produced a structural model of DNA. ( double helix )
What is DNA?
Ans: Deoxyribonucleic acid.
State the name of the four bases in DNA.
Ans: Adenine, Cytosine, Thymine, and, Guanine.
What other organelles is DNA found?
Ans: Mitochondria and Chloroplast. Since DNA is found in the nucleus that
actually controls the cell's working.
Chemical Messages ( on Chromosome ) are use for?
Ans: Its to carry the message between the Nucleus and Cytoplasm
How many Chromosome does ever human have?
Ans: 46 Chromosomes and 23 pairs.
Where are genes located?
Ans: On the Chromosomes.
What does DNA carry?
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Ans: Genetic Information.
What does DNA use to replicate itself?
Ans: DNA Polymerse.
what is RNA?
Ans: Ribonucleic acid. ( single strands )
What is RNA used for?
Ans: Protein synthesis.
What does DNA code for?
Ans: Amino acids.
What do Amino Acids determine?
Ans: What type of proteins are made.
What type of structure is DNA?
Ans: Double Helix .
What are the " backbone" made out of ?
Ans: Sugars and Phosphates.
Nitrogenous Base are?
Ans: Are either Adenine, Thymine, Cytosine and Guanine that are
connected to the DNA strands ( backbone )
Nitrogenous Bases have what type of bonds?
Ans: Hydrogen Bonds ( Hydrogen bonds are weak )
What do hydrogen Bonds do?
Ans: It helps bond the complementary bases ( A-T and G-C ) on opposite
strands, holding the double helix together.
What is Nucleotides?