U4 L3: DNA & Mutations

What is the best definition for Deoxyribonucleic Acid?

• DNA is the molecule that contains the genetic instructions for life and is passed from parent to offspring on the chromosomes.

• DNA is a lipid that stores fat in the body and contains all the genetic material to successfully build a human.

• DNA is a carbohydrate that provides energy and is passed on the chromosomes.

• DNA is a type of protein found in cells along with mRNA.

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What is the best definition of a Gene?

• A gene is a unit of heredity that is always visible in an organism.
• A gene is a molecule that carries oxygen in the blood.
• A gene is a segment of DNA that encodes instructions for protein synthesis.
• A gene is a type of protein found in cells.

What is the best definition of a Chromosome?

• A chromosome is a small organelle responsible for energy production.
• A chromosome is a type of protein found in cells.
• A chromosome is a structure made of DNA and proteins that carries genetic information.
• A chromosome is a liquid that transports nutrients in the body.

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What is the best definition of a Trait?

• A trait is a characteristic or feature of an organism determined by its genetics.
• A trait is a type of genetic mutation that is harmful to an organism.
• A trait is an environmental factor that influences an organism's behavior.
• A trait is a random characteristic that has no genetic basis.

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What is the best definition for Messenger RNA or mRNA?

• Messenger RNA (mRNA) is a molecule that carries genetic information from DNA to the ribosome for protein synthesis.
• Messenger RNA is a protein that helps in cell division.
• mRNA is a molecule that transports nutrients to cells.
• mRNA is a type of DNA that stores genetic information.

What is the best definition for Transfer RNA or tRNA?

• tRNA is a type of DNA that stores genetic information.
• Transfer RNA (tRNA) is responsible for synthesizing lipids in the cell.
• Transfer RNA (tRNA) is a molecule that transports amino acids to the ribosome for protein synthesis.
• tRNA is a protein that helps in cell division.

What is the best definition for DNA Replication?

• DNA replication is the process of breaking down DNA into smaller fragments.
• DNA replication is the process of copying the DNA molecule to produce two identical DNA molecules.
• DNA replication is the process of converting RNA into DNA.
• DNA replication is the synthesis of proteins from amino acids.

What is the best definition for Nitrogen Bases?

• Nitrogen bases are carbohydrates that provide energy.
• Nitrogen bases are the building blocks of nucleic acids, consisting of adenine, thymine, cytosine, guanine, and uracil.
• Nitrogen bases are proteins that help in muscle building.
• Nitrogen bases are lipids that store fat.

What is the best definition of Protein Synthesis?

• The method by which cells break down proteins for energy.
• A technique used to extract DNA from cells.
• The process of converting carbohydrates into fats.
• The process by which cells create proteins based on genetic instructions.

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What is the best definition for a Mutation?

• A genetic mutation is a type of protein.
• A genetic mutation is a change in an organism's appearance.
• A genetic mutation is a process of cell division.
• A genetic mutation is a change in the DNA sequence of an organism.

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