DNA Structure & Function Notes Day I

Good Afternoon C Block Tuesday December 11th 2012

Please take out ALL of your Biology NOTES (Mitosis, CR, Photosynthesis)

&

2 pieces of paper

& a pencil

*2nd Biology Review Session is TOMORROW afterschool from 2:45 PM – 3:30 PM

**Last Day to turn in Paper Towels is THIS Friday

**Final Day to turn in your bathroom passes is TUESDAY Dec 18th (PLEASE turn them

in as early as possible)

Homework QsPhotosynthesis/CR

Due on Thurs. Dec 6th1. Describe the relationship between

cellular respiration and photosynthesis. How are they interconnected?

2. Explain what the process of cellular respiration breaks down.

3. Describe 3 potential ENVIRONMENTAL factors that can disrupt or influence the process of photosynthesis.

4. Where does the process of CR occur within the cell?

Photosynthesis/CR Review

BellworkPhotosynthesis/CR Review Bellwork

December 11th, 20121. Include the SUN, a plant or tree,

water, oxygen, a human being, carbon dioxide, glucose (sugar) and energy

Draw arrows showing the relationships between the reactants & products

2. Using the picture write out the word equations for Photosynthesis and CR?

DNA Anticipatory QsEasel Groups

1. DNA is made up of 3 parts – predict what those parts might be.

2. Where is DNA contained within cells?3. What type of information do you believe DNA

contains (be as specific as possible)?4. How much of your genetic information do you

believe you receive from each parent?

“DNA Structure” Video

Directions

Please set up your notes Cornell style

Title your notes: DNA Structure & Function

Remember to include name, date and block

Today is December 11th

DNA Structure & Function

DNA= Deoxyribonucl

eic acid

The Components That Make Up DNA….

DNA (long molecule) made up of repeating units called Nucleotides

Nucleotides are made up of 3 parts:

1. Phosphate Group

2. Simple Sugar (deoxyribose)

3. Nitrogen base

The four Nucleotide BASES found in DNA are:

Adenine (a Purine) Cytosine (a Pyrimidine)

Guanine (a Purine) Thymine (a Pyrimidine)

The Shape of a Nucleotide

DNA BACKBON

E

Please copy down picture of Sugar-Phosphate backbone

DNA consists of two associated polynucleotide strands that wind together in

a helical fashion

Thus DNA is called a DOUBLE HELIX STRUCTURE

Each base pair has a complimentary base pair (A=T

& G=C)The amount of A is always equal to the amount of T; same with G & CThe nitrogen bases hold together the two strands of DNA with weak hydrogen bondsThe two strands are complementary together

**A & T (Always Together)**C & G (Good Company)

DNA Compliment Quick Practice

(Half Sheet of Paper)Write out the complimentary strands for the following DNA segments:

1. A T G G T C A T C

2. C A C C G T A G C

3. T G G A C G T A T

DNA Replication Partner Check

December 11th1. Synthesize the complimentary DNA strand:

TAC ATC CGG CTT ACA ACG ATC

2. Label the following structure:

A.

B.

C.

DNA Replication Exit Slip

December 11th1. In DNA, Adenine bonds to (a.)____ and

Guanine bonds to (b.)________.

2. DNA is a (c.)_______ helix. So, pair this strand of DNA with it’s partner:

TAC GGT CCG Half a strand of DNA

_____________ Matching partner strand

(d.)

DNA Structure and Function Notes Summary

At the bottom of your notes please respond to the following prompts in a paragraph.

Explain your understanding of the structure of DNA. What are the pieces that make up DNA?What is it that DNA does for us and WHY is it such an important macromolecule?