HW: IP: Replication Thursday March 9, 2017 I can: Agenda (10) Catalyst

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Presentation transcript:

HW: IP: Replication Thursday March 9, 2017 I can: Agenda (10) Catalyst understand the steps of DNA replication Agenda (10) Catalyst (15) Amoeba Sisters DNA Structure & Function (20) GN: Replication (20) Kahoot! (20) IP: Replication (5) Exit Ticket Catalyst What types of cells contain DNA? What are the 3 parts of the nucleotide? Where are the strong bonds located in DNA? Weak bonds? What is the sequence complementary to: C A T G C A T G HW: IP: Replication

Exit Ticket Review 1. What is the complementary base to cytosine in DNA? A. uracil  B. thymine C. guanine D. adenine

Exit Ticket Review 2. Which helps form the backbone of DNA? A. uracil base B. ribose sugar  C. guanine base  D. phosphate group

Exit Ticket Review 3. Which sequence of DNA pairs with the strand TAT CCC GAT? A. AAA UCG GAG B. ATA GGG CTA C. ATU CCG GAT D. UUU CAC GGA

Exit Ticket Review 4. Where are the weak bonds located in a molecule of DNA? A. Between the sugar and phosphate backbone. B. Between the nitrogen bases. C. Between the carbohydrates and lipids. D. Between the phosphate and bases.

When a cell divides, how does it make sure that a complete set of DNA instructions is passed on to each cell?

Before a cell divides, it duplicates its DNA in a copying process called replication. This process ensures that each cell made has a complete set of DNA directions.

Replication During replication, the DNA molecule separates into two strands, then produces two new complementary strands following the rules of base-pairing: A with T C with G T C G A C T G G

DNA replication is carried out by a series of enzymes DNA helicase “unzips” DNA by breaking the hydrogen bonds between base pairs. the molecule unwinds ----- Meeting Notes (3/15/16 15:52) -----

DNA replication is carried out by a series of enzymes 2. DNA polymerase adds complementary nucleotides to the (old) template.

3. DNA polymerase “proofreads” each new DNA strand, because sometimes it makes typos.

Each DNA molecule resulting from replication has one original strand and one new strand. This method of replication is said to be semi-conservative.

KAHOOT

To Do: Exit Ticket (TODAY) IP: Replication (TOMORROW) DNA and RNA Review (SHOW ME WHEN COMPLETE) Extra Credit (challenge crossword, biochemistry reviews) Test Corrections