Unit 6 Lesson 2A

What is the central dogma of molecular biology as explained by Francis Crick in 1958?

• RNA → DNA → Proteins

• DNA → RNA → Proteins

• Proteins → RNA → DNA

• DNA → Proteins → RNA

What role does RNA play in the flow of genetic information?

• Stores genetic information

• Acts as a messenger

• Forms the final product

• Provides energy

Approximately how many protein-coding genes do humans have?

• 10,000 to 15,000

• 15,000 to 20,000

• 20,000 to 25,000

• 25,000 to 30,000

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What is the primary function of proteins in cellular structure?

• Store genetic information

• Provide energy

• Form the building blocks of cells

• Act as enzymes

What is the function of hormones in the body?

• They act as protein-based messengers.

• They store energy.

• They break down nutrients.

• They form cell membranes.

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What is the process of copying DNA to mRNA called?

• Translation

• Replication

• Transcription

• Mutation

Where does transcription occur in eukaryotic cells?

• Cytoplasm

• Nucleus

• Ribosome

• Cell membrane

What is a similarity between DNA and RNA?

• Both contain uracil

• Both are nucleic acids

• Both are found only in the nucleus

• Both are temporary copies of genetic information

Which nucleotide is found in RNA but not in DNA?

• Thymine

• Adenine

• Uracil

• Cytosine

What is the primary role of DNA in cells?

• Temporary copy of genetic information

• Long-term storage of genetic information

• Transport of proteins

• Energy production