Exploring DNA and Protein Synthesis Concepts

What was the main conclusion of the Hershey-Chase experiment?

• Proteins are the genetic material.

• DNA is the genetic material.

• Bacteria can be infected by viruses.

• Radioactive labels can be used in experiments.

According to Chargaff's rules, which of the following is true?

• The amount of adenine is equal to the amount of cytosine.

• The amount of guanine is equal to the amount of thymine.

• The amount of adenine is equal to the amount of thymine.

• The amount of guanine is equal to the amount of uracil.

What did Rosalind Franklin's x-ray diffraction work reveal about DNA?

• DNA is a single helix.

• DNA is found only in prokaryotes.

• DNA is a double helix.

• DNA is composed of proteins.

Which of the following is a component of the DNA backbone?

• Adenine

• Thymine

• Sugar and phosphate

• Guanine

What is the role of helicase in DNA replication?

• It adds nucleotides to the new strand.

• It seals the gaps between Okazaki fragments.

• It synthesizes RNA primers.

• It unwinds the DNA double helix.

What is the function of DNA polymerase during replication?

• Unwinding the DNA helix

• Adding complementary bases to the new strand

• Sealing the DNA fragments

• Removing RNA primers

Where does transcription take place in eukaryotic cells?

• Ribosome

• Cytoplasm

• Mitochondria

• Nucleus

What is the role of tRNA during translation?

• Carrying the genetic code from DNA

• Synthesizing RNA primers

• Unwinding the DNA double helix

• Carrying specific amino acids to the ribosome

Which type of mutation involves the replacement of one base pair with another?

• Point mutation

• Chromosomal mutation

• Duplication mutation

• Frameshift mutation

What is a common effect of a frameshift mutation?

• No change in the protein

• A stop codon is introduced

• All amino acids after the mutation are incorrect

• A single amino acid change