1. What does maintaining homeostasis mean?
Purpose:
Mainly controlled by:
Signal pathway:

2. Replication, Transcription, and Translation Review
What was your proficiency score on the mock exam for Replication, Transcription, and Translation?

3. What – How – Why?
What: Describe DNA replication, transcription, and translation. SCI 2.7b, RWC 3.2f/g
How: Given word bank, compose P/A text impressions describing the processes of protein synthesis and DNA replication.
WHY? 30% next week!! CBM!!

4. Describe the structure of the DNA molecule.
DNA (Deoxyribonucleic Acid) is made of three things:
Phosphate group
Deoxyribose
(Sugar)
Nitrogen Base

5. Calculating base percentages
If an organism’s DNA has 32% cytosine, how much guanine does it have?
b) How much adenine does it have?

6. Explain the relationship between genes and DNA
DNA  organized into  genes

7. Recognize the relationship between genes and proteins.
Genes  transcribed and translated  proteins

8. Describe the events of DNA replication.
DNA  DNA – WHY??? When would this happen?
Cloning (dead skin, growth, etc)
What enzyme responsible:
DNA polymerase

9. Identify the genetic code
DNA is the genetic code How does this describe the genetic code? IMPORTANT!!!!! Use mRNA to code on The coding wheel

10. Distinguish between translation and transcription.
Transcription – WHAT HAPPENS? - DNA  mRNA WHERE? In the nucleus WHO Regulates this? RNA polymerase

11. Distinguish between translation and transcription.
mRNA Makes?
protein
WHERE?
In the Cytoplasm
tRNA brings what?
(anti-codon)

12. Quick Check 1. DNA is organized into which of the following a. genes
b. tRNA
c. histones
d. Amino Acids
Answer = A

13. Quick Check
2. Which of the following combinations make up a nucleotide?
a. sugar – nucleotide – glucose
b. nickel – acid - sugar
c. nitrogen base – sugar – phosphate
d. sugar – ribose – hydrogen
Answer = C

14. Quick Check 3. What enzyme is involved in replication?
a. DNA polymerase
b. RNA polymerase
c. Lactase
d. Ribosomal polymerase
Answer = A

15. 4. What does the following picture show? a. anticodons
b. the order in which amino acids are linked
c. the code for splicing mRNA
d. the genetic code
Answer = D

16. Quick Check
5. Which of the following would only happen in translation, not transcription? a. Codon b. Nucleolus c. mRNA d. tRNA
Answer = D

17. Quick Check 6. What is produced during translation? a. RNA molecules
b. DNA molecules
c. RNA polymerase
d. Proteins
Answer = D

18. Practice one DNA strand mRNA strand tRNA strand Protein sentence
ATG AAA AAC AAG GTA CAC ATC TAG
mRNA strand
UAC UUU UUG UUC CAU GUG UAG AUC
tRNA strand
AUG AAA AAC AAG GUA CAC AUC UAG
Protein sentence

19. What – How – Why?
What: Describe DNA replication, transcription, and translation. SCI 2.7b, RWC 3.2f/g
How: Given word bank, compose P/A text impressions describing the processes of protein synthesis and DNA replication.
WHY? 30% next week!! CBM!!

21. Summary – Text Impressions
Describe how DNA makes Proteins using the following words in order:
Nucleus
DNA
RNA polymerase
mRNA
Cytoplasm
Ribosome
tRNA
Codon
Anti –Codon
Amino Acid
Protein

22. Exemplar
In the _______ the process of transcription takes place. During this process ______ is separated by ______ and makes a complimentary strand of _____________. __________ leaves to the ______________ to be translated. mRNA is joined with a _________ where _____ attaches. tRNA knows where to attach because the _____, a sequence of 3 nitrogen bases, on the mRNA and the ___________ on the tRNA. The anti-codon is on one end of the tRNA while an __________ ______ is on the other end. Amino acids string together to form a _______ ________ in translation.