Download Wed 12-2 Computers Lab (40 points if all correct or 0 if not) Open up

Wed 12-2 Computers Lab (40 points if all correct or 0 if not)
1. Open up your assignments page in your H drive.
2. Be sure to name it _(period) Last Name First Name Assignments 2
Like 4 Smith John Assignments 2
Now that you have your assignments page open, open today’s work named 12-2.
Look at the top right corner of the screen, find the “select” and click it.
Choose “select all”
Hold the Ctrl key down and then press C.
Close the 12-2 document.
Click on 4 smith etc document.
Hold Ctrl and press V. The 12-1 work should paste in.
Type your answers to the questions.
Type your name and a random letter inside your name every 5 questions.
Save often.
Today’s lesson summarized:
DNA has the genes which make the proteins.
An enzyme goes to the gene and makes a messenger called mRNA
mRNA tells the ribosome what protein to make.
This process is called RNA TRANSCRIPTION
RNA Transcription
1. Hold the Ctrl key down and click this.
http://www.google.com/imgres?imgurl=http://www.biologycorner.com/resour
ces/mRNAcolored.gif&imgrefurl=http://www.biologycorner.com/bio1/DNA.html&h=35
1&w=220&sz=11&tbnid=nuEjzLDGFQwZ5M:&tbnh=120&tbnw=75&prev=
/images%3Fq%3Drna&hl=en&usg=__RkrLUmZhWN7bgLFJZf3MUcWpZ0
0=&ei=FzETS471NMmDnQeB_uzVAw&sa=X&oi=image_result&resnum=9
&ct=image&ved=0CCoQ9QEwCA
2. What does RNA stand for?
3. What is the sugar in RNA? Hint: sugars end in ose.
4. What are the three differences between DNA and RNA?
5. Transcription starts with a g _________ and makes m__________ which goes
to the ________________e and makes a ___________?
6. DNA has ATCG.
A is married to T,
C is married to G.
But RNA does not has T.
So what does it have instead of T?
7. Does the base in number 6 bond to A?
8. If a DNA strand has these bases AAACGTTTTG
what would the RNA have?
(you just did transcription!)
9. If a DNA strand has these bases: ACATGACAT what would the RNA have?
10.
http://www.youtube.com/watch?v=ztPkv7wc3yU&feature=related great
video on transcription
11.
The first base laid down is called 5 prime. The last base laid down is
called 3 prime.
12.
Where is the messenger RNA made?
13.
Where does it go?
14.
mRNA makes a chain of _____ ________ which is called a protein.
Proteins call have between 50 and 10,000 a____ _____s.
15.
http://www.google.com/#hl=en&source=hp&q=rna+transcription+anim
ation&aq=0&aqi=g10&oq=rna+transcription&fp=befd3a870de5664a What
does a promoter do?
16.
The part of the gene that has the code for the protein is the
____________________
17.
There has to be a way to tell the enzyme that the code is done. It the
____________________.
18.
What makes mRNA?
19.
What does the promoter do?
READ
DNA is a biologically important type of molecule that consists of a long chain of nucleotide units. Each
nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate. RNA is very similar to DNA,
but differs in a few important structural details: in the cell, RNA is usually single-stranded, while DNA
is usually double-stranded; RNA nucleotides contain ribose while DNA contains deoxyribose (a type of
ribose that lacks one oxygen atom); and RNA has the base uracil rather than thymine that is present in
DNA.
RNA is transcribed from DNA by enzymes called RNA polymerases and is generally further processed
by other enzymes. RNA is central to protein synthesis. Here, a type of RNA called messenger RNA
carries information from DNA to structures called ribosomes. These ribosomes are made from proteins
and ribosomal RNAs, which come together to form a molecular machine that can read messenger RNAs
and translate the information they carry into proteins. There are many RNAs with other roles – in
particular regulating which genes are expressed, but also as the genomes of most viruses.
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