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what are the three parts of a DNA nucleotide and how are they connected to each other
3 deoxribose sugar, phosphate group, nitrogen base
if 15% of the nucleotide in a DNA molecule contains guanine, what percentage of the nucleotides contain each of the other three bases
the 15% is cytosine because they are equal and 35% each thymine and adenine
why is complementary base pairing important in DNA structure
without complimentary base pairing their would be no structure of a DNA
How did xray diffraction photographs help Watson and Crick determine the structure of DNA?
the xray helped Watson and Crick determined that there is an double helix it wouldnt stick together.
how does replication occur so quickly in eukaryotes
replication occurs so quickly in the eukaroyte because it moves in the same direction. replication occurs simultaneously
why is it important that exact copies of DNA are produced during replication
Its important that exact copies are made so no mutations occur.
why is it advantageous to have weak hydrogen bonds between complementary bases and strong covalent bonds between phosphate and deoxyribose groups in a DNA molecule?
it is advantageous to have to weak hydrogen bond between complementary bases because they need stronger bases
each nulceotide in a DNA molecule consists of a
phosphate group a five carbon sugar molecule and a nitrogen base
which of the following describes the base pairing rules in DNA
adenine pairs with thymine and cytosine pairs with guanine
three nucleotide sequence in mRNA that encodes an amino acid or signifies a start or stop signal
the genetic code specifies the correlation between
an RNA nucleotide sequence and an amino acid sequence
two amino acids are linked by a peptide bond when
two tRNAs pair with neighboring codons on an mRNA transcript
list in sequence the tRNA anticodons that are complementary to the mRNA sequence
UAC, UA, CGU and UCA no stop
how many amino acids will be in the polypeptide that is initially formed when this mRNA sequence is translated
explain why methionine is the first amino acid in every growing polypeptide
RNA transfers amino acids to the ribosome to make protein
describe three way that RNA differs from DNA
RNA directs the assembly of protein, forming protein based on information DNA. DNA acts as a template for the synthesis of RNA
how would a deletion of one nucleotide in the middle of an mRNA transcript affect the polypeptide specified by the transcript
it would change the DNA's genetic make up
complementary base pair
the standard arrangement of bases in nucleotides in reaction the their opposite pair
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