AP Bio Central Dogma Quiz

A visually engaging representation of DNA structure and genetic processes, including images of double helix, RNA transcription, and protein synthesis happening inside a cell, vibrant colors and a clear scientific illustration style.

AP Bio Central Dogma Quiz

Test your knowledge of the Central Dogma of Biology with this engaging quiz. Whether you're a student, teacher, or just a biology enthusiast, this quiz will challenge your understanding of key concepts related to DNA, RNA, and protein synthesis.

Topics Covered:

Chargaff's Rules
Function of DNA Polymerase
DNA Replication Processes
Transcription and Translation in Prokaryotes

13 Questions3 MinutesCreated by TestingTree79

Chargaff observed that the amount of

A) purines is roughly equal to the amount of pyrimidines in all tested organisms

B) A is roughly equal to the amount of T in all tested organisms

C) A + T is roughly equal to the amount of G + C in all tested organisms

D) Both A and B

A fundamental requirement for the function of genetic material is that it must be

A) conserved among all organisms with very little variation

B) passed intact from one species to the next species

C) accurately replicated

D) found outside the nucleus

The primary function of DNA polymerase is to

A) add nucleotides to the growing daughter strand.

C) seal nicks along the sugar–phosphate backbone of the daughter strand.

B) unwind the parent DNA double helix.

D) All of these are correct

The lagging daughter strand of DNA is synthesized in what appears to be the “wrong” direction. This synthesis is accomplished by

A) synthesizing short Okazaki fragments in a 5’-to-3’ direction.

B) synthesizing multiple short RNA primers to initiate DNA replication.

C) using DNA polymerase I to remove RNA primers from Okazaki fragments.

D) All of these are correct.

Thirty percent of the bases in a sample of DNA from eukaryotic cells is adenine. What percentage of cytosine is present in this DNA?

A) 10 percent

B) 20 percent

C) 30 percent

D) 40 percent

Which of the following represents a bond between a purine and a pyrimidine (in that order)?

A) C–T

B) G–A

C) G–C

D) T–A

Which of the following statements about DNA replication is false?

A) Okazaki fragments are synthesized as part of the leading strand.

B) Replication forks represent areas of active DNA synthesis on the chromosomes.

C) Error rates for DNA replication are often less than one in every billion base pairings.

D) Ligases and polymerases function in the vicinity of replication forks.

Which of the following would not be found in a DNA molecule?

A) Purines

B) Ribose sugars

C) Phosphates

D) Sulfur

Transcription in prokaryotic cells

A) occurs in the cytoplasm, whereas translation occurs outside the cell.

B) is initiated at a start codon with the help of initiation factors and the small subunit of the ribosome.

C) is initiated at a promoter and uses only one strand of DNA, the template strand, to synthesize a complementary RNA strand.

D) is terminated at stop codons.

Which of the following about RNA polymerase is not true?

A) It synthesizes mRNA in a 5’-to-3’ direction reading the DNA strand 3’-to-5’.

B) It synthesizes mRNA in a 3’-to-5’ direction reading the DNA strand 5’-to-3’.

C) It binds at the promoter and unwinds the DNA.

D) It does not require a primer to initiate transcription.

Which answer is the correct translation of the following mRNA sequence: 3’-G A U G G U U U U A A A G U A- 5’

A) NH2 met—lys—phe—leu—stop COOH

B) NH2 met—lys—phe—trp—stop COOH

C) NH2 asp—gly—phe—lys—val COOH

D) NH2 asp—gly—phe—lys—stop COOH

What part of the tRNA base-pairs with the codon in the mRNA?

A) The 3’ end, where the amino acid is covalently attached

B) The 5’ end

C) The anticodon

D) The promoter

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AP Bio Central Dogma Quiz

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