1. Answer Key For Practice Test

2. Questions 1-8 DNA Replication (making copies)
Nucleus
Deoxyribose sugar, phosphate group and nitrogenous base
polymer of nucleotides = DNA
Helicase
DNA Polymerase 46
Interphase (s phase)
46, All

3. Questions 1-3 Protein Synthesis
DNA codes for Proteins
Examples of proteins- insulin, testosterone, estrogen, helicase, DNA and RNA polymerase, catalase, lactase, dopamine, actin, myosin, dystrophin – all muscle fibers. Thyroxin (thyroid hormone), neurotransmitters, amylase, pepsin, trypsin, hemoglobin, etc. (1 million about)
Transcription and translation
ATCG’s (nitrogen bases)
Copy DNA code onto mRNA

4. Answers 4-8 5) mRNA 6) DNA A C G T G T G G C A A
4) Nucleus
5) mRNA
6) DNA A C G T G T G G C A A
7) Open DNA and add nucleotides to make single stranded mRNA
8) Translate mRNA message into amino acids (uses an anticodon)

5. Answers 9-14
9) Cytoplasm and ribosomes 10) Ribosomes (rRNA) and tRNA 11) Workbench and translate mRNA 12) 3 “letter” base pairs on mRNA = # of codons =3 13) Reads the codon on mRNA/found on tRNA 14) Apoptosis = cell death

6. 15
DNA Code: TAC GTA GCT GAT ACT GTT AAG TGA mRNA : AUG CAU CGA CUA UGA CAA UUC ACU tRNA : UAC GUA GCU GAU ACU GUU AAG UGA Amino Acid:MET HIS ARG LEU Stop GLU PHE Thr How many codons are above? Anticodons?