What are the four bases represented by the letters A, C, G, and T?

Adenine, Cytosine, Guanine, Thymine

Arginine, Cysteine, Glycine, Tyrosine

Aspartic acid, Glutamic acid, Histidine, Lysine

Alanine, Asparagine, Glutamine, Tryptophan

How are the two DNA strands related?

They are complementary to each other

They have the same sequence of bases

They are identical copies of each other

They have opposite orientations

What is the function of the enzyme primase?

To synthesize a short RNA primer

To add bases to the growing DNA strand

How is the leading strand of DNA synthesized during replication?

In the opposite direction of the template strand

Discontinuously in small fragments

By a different enzyme than the lagging strand

What is the final step in DNA replication?

Formation of a double-stranded DNA molecule

What happens to the chain of amino acids once the last one is added?

It folds into a 3D complex shape to form a protein

Which of the following accurately describes the relationship between DNA polymerase and its functions?

DNA polymerase reads and copies the DNA template strand during replication

DNA polymerase is responsible for breaking down DNA molecules in the cell

DNA polymerase plays a role in RNA transcription and translation

DNA polymerase primarily functions in the process of photosynthesis

REPLICATION TRANSCRIPTION TRANSLATION (RETAKE)

History and structure of DNA, DNA Replication, Transcription and translation. What is DNA? What are genes? DNA structure.

SB2. Obtain, evaluate, and communicate information to analyze how genetic information is expressed in cells. a. Construct an explanation of how the structures of DNA and RNA lead to the expression of information within the cell via the processes of replication, transcription, and translation. Learning Targets _______Identify the structural components of DNA and RNA Success Criteria _______Can accurately identify the key structural components of DNA (deoxyribose sugar, phosphate group, nitrogenous bases: adenine, thymine, cytosine, guanine). _______Can identify the key structural components of RNA (ribose sugar, phosphate group, nitrogenous bases: adenine, uracil, cytosine, guanine). _______Can describe the differences in the sugar backbone of DNA and RNA (deoxyribose vs. ribose). _______Can identify the double-stranded structure of DNA and the single-stranded structure of RNA. _______Identify the parts of protein synthesis and the location of each process Success Criteria _______Can identify and describe the two main processes of protein synthesis: transcription and translation. _______Can correctly explain that transcription occurs in the nucleus where DNA is transcribed into mRNA. _______Can explain that translation occurs in the cytoplasm at ribosomes where mRNA is translated into amino acid sequences to form proteins. _______Compare and Contrast DNA to RNA Success Criteria _______Can clearly identify similarities between DNA and RNA, such as both being nucleic acids and containing nucleotide structures. _______Can explain differences in DNA and RNA, including sugar types (deoxyribose vs. ribose), strand number (double-stranded DNA vs. single-stranded RNA), and nitrogenous base usage (thymine in DNA vs. uracil in RNA). _______Can describe the function of DNA as genetic storage and the function of RNA in protein synthesis (mRNA, tRNA, rRNA). _______Analyze the reasoning for enzymes usage in both DNA replication and protein synthesis. Success Criteria _______Can identify key enzymes involved in DNA replication (e.g., helicase, DNA polymerase, ligase) and explain their functions (e.g., helicase-unwinding DNA, DNA polymerase-synthesizing new DNA strands, ligase-sealing nicks in the DNA backbone). _______Can identify enzymes involved in protein synthesis (e.g., RNA polymerase) and explain their role in transcribing DNA into mRNA. _______Can analyze why enzymes are essential for speeding up chemical reactions…(ensuring accuracy, and catalyzing steps in replication and protein synthesis) _______Can provide specific examples of how enzyme malfunction can impact genetic replication or protein synthesis. _______Perform the steps of DNA replication and protein synthesis in order to demonstrate their understanding of how the structure of DNA supports the genetic expression in successive generations. Success Criteria _______Can demonstrate a step-by-step understanding of DNA replication, including unwinding, complementary base pairing, and proofreading. _______Can demonstrate the steps of transcription (formation of mRNA from DNA) and translation (conversion of mRNA into a polypeptide). _______Can show how DNA's structure (double helix, base pairing) ensures accurate replication for passing genetic information to offspring. _______Can illustrate how changes in DNA sequence can lead to changes in protein structure and function, thus affecting traits in successive generations.

transcription , replication and translation

Transcription, Translation, Replication, and Cloning

DNA replication and transcription

DNA polymerase III A prokaryotic enzyme with 5’ to 3’ Polymerase activity. The Hydrolysis of pyrophosphate (PPi) drives the energy required to create the covalent phosphodiester bond.A prokaryotic enzyme with 5’ to 3’ Polymerase activity.DNA polymerase is a multisubunit enzyme where the subunits of the enzyme form a ring that encircles and moves along the template strand of the DNA, thus serving as a sliding DNA clamp. Therefore the enzyme cannot diffuse away from its task.DNA polymerase III has proofreading capabilities and therefore the error rate of RNA transcription is 1 in 10 million bases (1X107).To ensure DNA replication fidelity, DNA polymerase III can edit its mistakes. DNA polymerase III has 3’ to 5’ Exonuclease activity.The 5’ to 3’ polymerase activity then replaces it with the correct nucleotide.

replication

Replication and Repetition in Science - Starter Quiz

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