Answer Key For Practice Test

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Answer Key For Practice Test

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

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

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)

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

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?