Wednesday, November 7, 2007
Wednes-Day 2
Bio- we went to the Rachel's Challenge assembly from which, I hope, you all gained some valuable information that you can apply to your daily routines.
Today, in finer detail, we compared the molecular structures of DNA and RNA. We noted the differences between their nucleotides:
DNA contains DEOXYribose sugar, which has one less oxygen attached to the 5-atom ring than does RIBOSE, the sugar in an RNA nucleotide. There is a picture of the two different sugars, posted in the notes.
DNA always has THYMINE as the complementary base pair to ADENINE.
RNA forms by temporarily forming complementary base pairs with the DNA coding strand. A pairs with U (uracil) and G pairs with C.
RNA NEVER has THYMINE in it; instead it contains the very similar molecule, URACIL, anywhere that thymine would have been placed during transcription.
RNA is single-stranded helix-shaped molecule but DNA is a double-stranded helix-shaped molecule due to the complementary base pairs (A-T and G-C) that are held together via hydrogen bonding attractions.
In eukaryotes, the chromosomes, thus the DNA stays inside the nucleus whereas, after transcription, RNA goes outside the nucleus (through the pores in the nuclear membrane) to the ribosomes so that translation can begin.
Chem 7/8- tomorrow is test day. Study your notes (first), worksheets, etc.
I'll be in Room 301 at about 8AM for extra help tomorrow. Come prepared with specific questions that are giving you difficulty.
We reviewed for tomorrow's exam by explaining the causes of each gas law according to K-M theory and tenets. We also displayed each law graphically and went over some practice questions and test-taking techniques and mnemonics (don't forget to draw a PTV card on your test paper!!!)
We briefly discussed the Charles's Law lab, which will be due on Friday.
I will hand out review questions for the quarterly exam, tomorrow after the test.
Chem 9- tomorrow is test day. Study your notes (first), worksheets, etc.
I'll be in Room 301 at about 8AM for extra help tomorrow. Come prepared with specific questions that are giving you difficulty.
We reviewed for tomorrow's exam by explaining the causes of each gas law according to K-M theory and tenets. We also displayed each law graphically and went over some practice questions and test-taking techniques and mnemonics (don't forget to draw a PTV card on your test paper!!!).
I didn't collect your Charles Law lab today so hand that in tomorrow. Thanks!
I will hand out review questions for the quarterly exam, tomorrow after the test.
Today, in finer detail, we compared the molecular structures of DNA and RNA. We noted the differences between their nucleotides:
DNA contains DEOXYribose sugar, which has one less oxygen attached to the 5-atom ring than does RIBOSE, the sugar in an RNA nucleotide. There is a picture of the two different sugars, posted in the notes.
DNA always has THYMINE as the complementary base pair to ADENINE.
RNA forms by temporarily forming complementary base pairs with the DNA coding strand. A pairs with U (uracil) and G pairs with C.
RNA NEVER has THYMINE in it; instead it contains the very similar molecule, URACIL, anywhere that thymine would have been placed during transcription.
RNA is single-stranded helix-shaped molecule but DNA is a double-stranded helix-shaped molecule due to the complementary base pairs (A-T and G-C) that are held together via hydrogen bonding attractions.
In eukaryotes, the chromosomes, thus the DNA stays inside the nucleus whereas, after transcription, RNA goes outside the nucleus (through the pores in the nuclear membrane) to the ribosomes so that translation can begin.
Chem 7/8- tomorrow is test day. Study your notes (first), worksheets, etc.
I'll be in Room 301 at about 8AM for extra help tomorrow. Come prepared with specific questions that are giving you difficulty.
We reviewed for tomorrow's exam by explaining the causes of each gas law according to K-M theory and tenets. We also displayed each law graphically and went over some practice questions and test-taking techniques and mnemonics (don't forget to draw a PTV card on your test paper!!!)
We briefly discussed the Charles's Law lab, which will be due on Friday.
I will hand out review questions for the quarterly exam, tomorrow after the test.
Chem 9- tomorrow is test day. Study your notes (first), worksheets, etc.
I'll be in Room 301 at about 8AM for extra help tomorrow. Come prepared with specific questions that are giving you difficulty.
We reviewed for tomorrow's exam by explaining the causes of each gas law according to K-M theory and tenets. We also displayed each law graphically and went over some practice questions and test-taking techniques and mnemonics (don't forget to draw a PTV card on your test paper!!!).
I didn't collect your Charles Law lab today so hand that in tomorrow. Thanks!
I will hand out review questions for the quarterly exam, tomorrow after the test.
# posted by C @ 12:18 PM 
