DNA Function Chp. 10 Biology

Background Vocab Hemoglobin Insulin RNA- (ribonucleic acid) Plays several roles in the manufacture of proteins Made of nucleotides Nitrogenous bases A , U, C, and G A gene is a long section of a DNA molecule whose sequence of building blocks specifies the sequence of amino acids in a particular protein. Protein- fundamental component of living cells Enzymes Hormones Antibodies Hemoglobin Insulin

How does DNA work DNA (nucleic acid)  RNA  Amino Acids – building blocks of Proteins Protein  Do a job (perform a function) Analogy to remember what’s going on, build a house DNA is the blue prints (instructions) Amino Acids are the lumber Proteins are the house…

How are genes Expressed? Protein Synthesis from DNA- Chp. 10

Transcription vs. Translation Transcription in the nucleus Make mRNA from DNA DNA  mRNA Translation in the cytoplasm Make Proteins at the ribosome mRNA  proteins “translate a language” nucleic acid  amino acid

? ? Translation Transcription Translating nucleic acid language to amino acid language ? Transcription

Link to Good Video “Wikipedia. Is the best thing ever. Anyone, in the world, can write anything they want about any subject. So you know you are getting the best possible information.” Who said this?

1.__________ 3. 4. 2. 5. enzyme? mRNA DNA

Quiz time! G Translation A- Amino Acid B- tRNA C- Anticodon D- Codon E- mRNA F- Ribosome (rRNA) G- Polypeptide Chain or protein Picture? A? B? C? D? E? F? G? Quiz time! G

Quiz time! 1a. 8. 6. 4. 3.__ 5. 2. 7. 1b.