1. Go through all the questions and answer on your own FIRST; then click forward to view the correct...
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1. Go through all the questions and answer on your own FIRST; then click forward to view the correct answer 2. When you get to the end START AGAIN and do it over and over again as many times as possible.
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Transcript of 1. Go through all the questions and answer on your own FIRST; then click forward to view the correct...
1. Go through all the questions and answer on your own FIRST; then click forward to view the correct answer
2. When you get to the end START AGAIN and do it over and over again as many times as possible.
If a DNA sequence reads A T A C G T A, what will the complementary DNA strand read?
T A T G C A T
What does DNA polymerase do during DNA replication?
Finds and attaches complementary bases to the original DNA strand
What are the steps in DNA replication?
1. The DNA double helix unwinds 2. DNA polymerase attaches free bases
to the exposed original strands using the base pairing rules
3. Two molecules of DNA are produced, each with one original strand and one new strand.
Complete the chart to compare DNA and RNACharacteristic DNA RNA
# Of Strands
Type of Sugar in the nucleotide
Nitrogenous Bases
Location
Complete the chart to compare DNA and RNACharacteristic DNA RNA
# Of Strands 2 1
Type of Sugar in the nucleotide
Nitrogenous Bases
Location
Complete the chart to compare DNA and RNACharacteristic DNA RNA
# Of Strands 2 1
Type of Sugar in the nucleotide
Deoxyribose Ribose
Nitrogenous Bases
Location
Complete the chart to compare DNA and RNACharacteristic DNA RNA
# Of Strands 2 1
Type of Sugar in the nucleotide
Deoxyribose Ribose
Nitrogenous Bases A bonds with TG bonds with C
A bonds with UG bonds with C
Location
Complete the chart to compare DNA and RNACharacteristic DNA RNA
# Of Strands 2 1
Type of Sugar in the nucleotide
Deoxyribose Ribose
Nitrogenous Bases A bonds with TG bonds with C
A bonds with UG bonds with C
Location Nucleus Throughout the cell
What is the role of mRNA?
mRNA serves as a temporary copy of a section of DNA
It carries that temporary DNA message to the ribosome
What is the role of rRNA?
rRNA makes up the ribosome
What is the role of tRNA?
tRNA has an anticodon and a specific amino acid attached to it
It matches up its anticodon with a codon on the mRNA
Then, the amino acid that was carried by the tRNA is attached to the polypeptide (protein) chain
What type of RNA is this?
mRNA
What type of RNA is this?
tRNA
What structure is is this?
ribosome
What process is happening here?
transcription
What process is happening here?
translation
How many codons code for the amino acid isoleucine?
3
What amino acid does the DNA sequence TTA code for?
Asparagine
mRNA: AAU
Read inside to outisde
What are the groups of 3 bases on mRNA called?
Codons
What is a frameshift mutation?
When an extra base is either inserted or a base is deleted and it changes how the groups of codons are read
What is a missense mutation?
When a base is substituted and it causes one amino acid to change
What is a silent mutation?
When a base is substituted but it doesn’t cause the amino acid to change
What is a nonsense mutation?
When a base is substituted and it changes the amino acid to “stop”
How can you tell if a mutation will change something’s phenotype?
If the mutation causes a change in the amino acid sequence, it could cause the protein’s functionality to change
The more amino acids that are different, the more likely it is that the phenotype will be affected
What part of the cell is this?
Nucleus
What part of the cell is this?
Endoplasmic Reticulum
What part of the cell is this?
Golgi Apparatus
Name the cell organelles involved in protein synthesis in chronological order
Nucleus Ribosome Endoplasmic Reticulum Golgi Apparatus
What is the role of the nucleus in protein synthesis?
Store the DNA, which has the codes for making all of the proteins
Is the site for transcription
What is the role of the ribosome in protein synthesis?
Reads the codons on mRNA to determine what tRNA molecules to bring in and what order to assemble the amino acids
What is the role of the endoplasmic reticulum in protein synthesis?
Transports (carries) proteins to different parts of the cell
What is the role of the golgi in protein synthesis?
Packages proteins that are going to get exported from the cell
Gene A Gene B
Contains 900 nucleotides (on one strand of DNA)
Contains 1200 nucleotides (on one strand of DNA)
300 nucleotides are introns 300 nucleotides are introns
Makes protein X Makes protein Y
Protein X involved in oxygen transport in your body.
Protein Y is involved in giving you your eye color.
How many codons are in gene B?
•400•There are 3 bases (nucleotides) in 1 codon•You would divide 1200 nucleotides by 3
How many codons make up the introns for gene B?
•100
Which protein will be made of less amino acids?•Gene A•Its is made of 900 nucleotides vs gene B is made of 1200
In your body, which of the following is true about gene A and gene B?a. Gene A has a different order of bases than gene B.b. Gene A makes a different protein than gene B.c. Gene A makes a protein that is crucial for life, while gene B’s protein is not as important.d. A mistake in gene A may affect oxygen transport in your body, while a mistake in gene B may affect your eye color.e. All of the above are true.ANSWER: e
