2.4 DNA Review Lesson

DNA Replication

Characteristics of DNA

Multiple Choice

Which of the following best explains the semiconservative model?

• Each new DNA molecule contains two original strands.
• Each new DNA molecule contains one original and one new strand.
• DNA replication results in two identical DNA molecules.
• Each new DNA molecule is made up of only new strands.

Match

Match the following

• ATTACG

• GGGCAA

• TAGGGC

• GGCAAT

• AGCTAC

TAATGC

CCCGTT

ATCCCG

CCGTTA

TCGATG

• TAATGC

• CCCGTT

• ATCCCG

• CCGTTA

• TCGATG

Multiple Choice

Which of the following best represents DNA replication?

• DNA unwinds, DNA polymerases add new bases, DNA rewinds together, and 2 DNA molecules are formed.

• DNA unwinds, DNA polymerases remove bases, DNA ligase separates the strands, and 1 DNA molecule is formed

• . DNA rewinds, DNA polymerases break the bonds, DNA unwinds again, and 3 DNA molecules are formed.

• DNA polymerases unwind DNA, bases are randomly added, DNA molecules form without rewinding.

Transcription vs Translation

DNA vs RNA

Multiple Choice

What is transcription and where does it occur?

• Transcription is the process of copying DNA into RNA, occurring in the nucleus

• Transcription is the process of translating RNA into DNA, occurring in the mitochondria.
• Transcription is the synthesis of proteins from amino acids, occurring in the ribosome.
• Transcription is the replication of RNA into DNA, occurring in the endoplasmic reticulum.

Multiple Choice

What is translation and where does it occur?

• Translation occurs in the ribosomes and turns mRNA into Proteins

• Translation occurs in the cytoplasm and turns proteins into mRNA.

• Translation occurs in the mitochondria. It takes DNA and turn into energy.

• Translation occurs in the nucleus and it transcribes DNA to mRNA.

Match

Transcribe this DNA strand into mRNA.

• ATGCAT

• GGACCA

• AAAUAU

• CGATAG

• TTAATG

UACGUA

CCUGGU

UUUAUA

GCUAUC

AAUUAC

• UACGUA

• CCUGGU

• UUUAUA

• GCUAUC

• AAUUAC

Multiple Choice

What amino acid are coded from the following mRNA strand: GGG

• Ser

• Leu

• Cys

• Gly

Multiple Choice

What amino acid are coded from the following mRNA strand: AUA-AUG

• Isoleucine, Methionine
• Phenylalanine, Glycine
• Valine, Serine
• Leucine, Glutamine

Multiple Choice

What amino acid are coded from the following mRNA strand: AAG-GGG-UUU-CCA-CCG

• Arg-Ser-Tyr-Gly-Gly
• Met-Leu-Ser-Ala-Arg
• His-Cys-Trp-Glu-Thr
• Lys-Gly-Phe-Pro-Pro

Multiple Choice

What amino acid are coded from the following mRNA strand: CCA-GGU-CAU-UUU

• Pro-Gly-His-Phe
• Asp-Cys-Gln-Trp
• Val-Thr-Glu-Arg
• Ala-Ser-Leu-Tyr