2015 Science Island 2 What is the function of DNA 2015 Science Island 3 DNA is a polymer made of monomers 2015 Science Island 5 List the 4 nitrogen bases found in DNA and discuss how they pair up ID: 738209
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What does DNA stand for?Slide3
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What is the function of DNA?Slide4
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DNA is a polymer made of ___ monomers.Slide5Slide6
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List the 4 nitrogen bases found in DNA and discuss how they pair up.Slide7
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DNA nucleotides are joined by covalent bonds between the ___ of one nucleotide and the ___ ___ of the next.Slide8
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Nitrogen bases in DNA are held together by ___ bonds.Slide9
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The
s
hape of the DNA molecule is like a twisted ladder and is called a ___ ___.Slide10
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The double helix shape of DNA was first described in 1953 by
___ & ___. Slide11
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The process of copying the DNA molecule is called ___ ___.Slide12
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Briefly explain why DNA replication is necessary.Slide13
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During DNA replication, the molecule unzips at ___ of ___ forming replication bubbles.Slide14
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The result of DNA replication is two new ___ molecules, each with one strand from the original parent and one new strand.Slide15
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What bases will base pair to this section of DNA during replication
?
A T T C A G C A T C C G Slide16
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List the 2 main steps or stages in protein synthesis.Slide17
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Define gene.Slide18
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20 different ___ ___ link together to form chains. A protein is composed of one or more of these ___ chains which are twisted and folded into a particular shape.Slide19
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Your DNA contains the instructions for making your ___ and these determine your ___.
Genotype
Phenotype
PROTEINSSlide20Slide21
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Write the RNA bases that will base pair to this section of DNA during transcription:
A T T C A G C A T C C G Slide22
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Name the 3 types of RNA described below:
Transcribes the DNA code
Primary component of the ribosome
Carries an amino acid into position during translationSlide23
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Fill in the missing step in transcription:
DNA strands separate
One side serves as a template
?
mRNA transcript is spliced
mRNA exits nucleusSlide24
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Where does transcription take place?
What is formed from this process? Slide25
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Eukaryotic genes contain non-coding regions called ___ and coding regions called ___.Slide26
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RNA ___ involves removing the introns and joining the exons together to form the mRNA transcript.Slide27
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Where does the mRNA transcript go when it exits the nucleus?Slide28
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Fill in the missing step in transcription
:
mRNA attaches to a ribosome in the cytoplasm
?
Amino acids bond to form polypeptide chainsSlide29
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Briefly discuss the structure and function of ribosomes.Slide30
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A 3-base “word” on mRNA that codes for one amino acid is a ___.
AUGSlide31
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What is the purpose of a codon chart like this?Slide32Slide33
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Use this portion of the codon chart to determine the amino acid coded for by the mRNA codon UCA.Slide34
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Any change in the DNA sequence is a ___.Slide35Slide36
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List the two basic types of point mutations and explain why one type is usually worse than the other.Slide37
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