Bellwork : Draw the graph and answer the question

Bellwork: Draw the graph and answer the question

• The graph shows the rate of activity for the enzyme catalase at different temperatures. Catalase helps convert hydrogen peroxide to oxygen and water. The rate of catalase activity is directly related to the percent increase in oxygen.

• Based on the graph, what conclusions can be made about the functioning of catalase?

Science Fact of the Day:An Octopus has three hearts.

CO: I will understand and explain the process and purpose of

transcription.

LO: I will write notes and will create a mind map about Transcription.

Transcription Preview

Let’s get some things straight…

• Replication- to make an exact copy–Replication is like making a photocopy

• Transcription- to transfer from one recording form to another–Transcription is like taking notes

(same information, different form)

Why bother making copies?

Well…1. Copies are good to have as a backup—it’d be

bad if something happened to DNA 2. You can just put down the part of the

information you need—shorter/simpler

Think of it like this:DNA = master copyRNA = blueprints…you don’t need the

blueprints for the whole house to build the foundation

Central DogmaWe’re only talking about the first part today

DNA RNA Protein

Ribosome

Transla

tion

Transcr

iption

Nucleus

Transcription (big ideas)

• Is the first step in making a protein (polypeptide)• Occurs in the nucleus• DNA is used to make RNA– RNA is then sent out into the cell to make proteins– It’s usually just a section of the DNA strand (gene)

that codes for one specific protein

There are three main differences between DNA and RNA:

1) The sugar in RNA is ribose instead of deoxyribose.

2) RNA is single-stranded.

3) RNA contains uracil instead of thymine.

Comparing base pairing rules

DNA to DNAC GG CT AA T

DNA to RNAC GG CT AA U

Summarize the DNA to RNA base pairing rules in exactly 8 words.

Messenger RNA (mRNA) carries copies of instructions from DNA in the nucleus

to the ribosome to make proteins.

Translation Recap

Transcription Model (teacher guide)

• I need a person for A T G T C A at the front of the room

• I need people to form a complementary DNA strand

• Who wants to be helicase?• Now I need people to form a complementary

RNA strand• DNA polymerase please stand up…

Practice Replication and Transcription

• We’re going to make a paper foldable to practice.

• You’ll have 7 minutes to replicate and transcribe DNA after we fold the paper

Mind Map Example

• Word bank: lipid, fatty acid, biomolecule, protein, enzyme, carbohydrate, ring, chain, Nitrogen, monosaccharide, amino acid, polypeptide

Biomolecule

lipid

Fatty acid chain

carbohydrate

monosaccharide

polypeptide

nitrogen

Amino acidenzyme

protein

ring

=

Create your own mind mapExplain connection on the arrows

• Word bank: transcription, nucleus, DNA, mRNA, gene, adenine, guanine, cytosine, thymine, uracil, nucleotide, nucleic acid, helicase, replication