1/5 7th Grade Agenda Learning Objective: Learn about Protein Synthesis Collect HW: Reading & Note taking 97 – 98 Video: Test you brain Textbook Reading p. 178 – 181 HW: Reading & Note taking 99 – 100 Reminder HW: Science Fair Background due 1/13 & 1/14 (10 Points)

Reflection Prompt: Write 3 things that you did during the winter break.

Science Fair Background 10 Points Due 1/13 & 1/14 Research and write 2 paragraphs related to your topic. Do not write your opinion. It must contain researched facts.

Meiosis Meiosis is the process by which the number of chromosomes is reduced by h____ to form sex cells – spe___ and eggs. alf rm

Meiosis Meiosis I Meiosis II

Protein Synthesis osome Cells use information from a gene on a chrom_________ to produce a specific protein. osome

RNA Before protein synthesis can take place a “messe____” carry the genetic code from the DNA inside the nucleus into the cytoplasm. This genetic messenger is called ribonucleic acid or RNA nger

RNA

DNA vs RNA DNA RNA Copy One Strand Leaves the nucleus Master Copy Two Strands Never leave nucleus Copy One Strand Leaves the nucleus

Step 1 in Protein Synthesis Messenger RNA Production

Step 2 in Protein Synthesis Messenger RNA attaches to a Ribosome

Step 3 in Protein Synthesis Transfer RNA attaches to a Messenger RNA

Step 4 in Protein Synthesis Protein Grows