Wednesday, February 16, 2011
The test has been moved:
You can take it on Thursday during Homeroom and studyhall if you want, or on Friday during class.
NOTES:(order of what happens in cell)
(Part 1 transcription)
1. DNA unzips.
2. Nucleotides (floating around) connect to one side of the unzipped DNA.
3. mRNA is made(copy of gene)
4. mRNA leaves and DNA re-zips
5. The mRNA leaves the nucleus (through pores)
(Part 2 translation and protein synthesis)
1. mRNA heads to ribosome
2. mRNA joins with ribosome
3. Ribosome reads message 1 codon at a time(3 nucleotides)
4. tRNA (that match the codon from mRNA) brings the amino acid to ribosome.
5. Ribosome takes the amino acids
6. This process is repeated many times.
Differences between transcription and translation.
Result: Transcription you get mRNA and replication you get DNA
Copies: One part of DNA (gene) is copied in transcription. In replication all of the DNA is copied.
*Translation= Protein synthesis (making protein). *Transcription= Making mRNA *Replication= making new DNA.
This can get very confusing at some points. It can be confusing because you forget or confuse transcription and translation or think protein synthesis is a totally different when in reality it is the same thing as translation!!!
Tuesday, February 15, 2011
Monday, February 14, 2011
Thursday, February 10, 2011
Wednesday, February 9, 2011
1. Which form of energy is especially important for living things? Why?
Chemical engery because the ATP gives the energy to your cells so you can do activities.
2. How is photosynthesis important to life on Earth?
Photosynthesis is important because it provides food for us.
3.What starting materials do cells need for cellular respiration?
Cells need glucose and oxygen for cellular respiration.
4. How are photosynthesis and cellular respiration similar? How are they different?
They are similar because they both help plants and other living things live. They are different because photosynthesis makes the glucose and cellular respiration breaks the glucose. Also, cellular respiration happens in the mitochondria and photosynthesis happens in the chloroplasts. And all living things respirate but only plants photosynthesize.
5. Suppose that in a lab you could remove all the oxygen from a terrarium. What would happen to the plants.
If we removed all the oxygen from a terrarium, the plants would die because as it grows, it needs more oxygen and we don't have that much.
6. In everyday language, the word respiration refers to breathing. How is breathing related to cellular respiration?
Breathing is related to cellular respiration because the carbon dioxide we breath out comes from cellular respiration.
After that, we talked about how the result of anaerobic respiration is lactic acid. If the anaerobic respiration keeps up, so would the lactic acid, and as a result you would get muscle cramps. The glucose from cellular respiration is used for energy, storing for later, and it could be used for the plant's structure.
Monday, February 7, 2011
Friday, February 4, 2011
- Cap pushed up on bottled water tube
- Cap stayed same for distlled water tube
- Big clump of yeast on top of water in distilled tube
- Almost no yeast on the sides of both tubes
- Even less water in distilled tube
- More yeast on bottom of distilled than bottled
- Not much yeast on top of either tube
- Bottled water tube got more murky
Next we looked at 4 line graphs in which the x-axis was temperature, and the y-axis was the rate of metabolism. One was a "U" shape, one was straight, one going from bottom to top then plummeting, and one from top to bottom. The 1st question he asked us was which showed change. All but the straight one showed change because both varibles must be adjusted in order for it to be "changed". The 2nd question was which one showed the path for cellular respiration. This was the one that went from the bottom to the top because it shows the correct path for cellular respiration. Next Finley filled up ballons with different temperature CO2 ballons.
Red- Super hot
Yellow- Medium temp/warm
Green- Mix of yellow & blue
Blue- Super cold
After this he apologized for cutting our quiz time short and everybody got them back, unmarked. We had the remainder of the class to finish our report. Finally, the class was over. Do your lab report!!!Brendan Turner
Thursday, February 3, 2011
What you will expect when your are writing your prediction? You should base it off of your hypothesis. You can use these things for evidence of CO2 production would be the cork shooting out. You also have to have pressure for that evidence. Some more evidence of CO2 production would be yeast and water outside of the test tube. Having it push stuff to have it come out of the sides. It could also just rise a little bit, not having to pop off. If the seal was very good it could be that less CO2 was produced, but the rate could also be very slow, so it wouldn't shoot off immediatley. You also need to have tables for your qualitative data. You could also have two tables if you would like. Because of the snowday, this lab report is going to be due Monday. Try to get little bits of typing done each day. For the conclusion, you could say what you tried if you didn't get it right away like some of the other groups. You should say what you assumed about you experiment, or you could also say what you knew. you could also say what you would want to do next. The conclusion should sum up your whole lab report. Try to say EXACTLY what you did, saw, and said. You should put the independent and dependent varibles should be mentioned in the prediction. The dependent varible was CO2 production. The yeast rises because the CO2 cant get out.
Maddie Bedder blog#4