Cells & Biochem

Which macromolecule is primarily responsible for storing genetic information?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

Identify the organelle responsible for energy production in eukaryotic cells.

• Ribosome

• Mitochondria

• Golgi apparatus

• Lysosome

What is the primary structural difference between prokaryotic and eukaryotic cells?

• Presence of a cell wall

• Presence of a nucleus

• Presence of ribosomes

• Presence of DNA

Which process involves the synthesis of mRNA from a DNA template?

• Translation

• Replication

• Transcription

• Transformation

What is the role of ribosomes in the cell?

• DNA replication

• Protein synthesis

• Lipid synthesis

• Carbohydrate breakdown

How does pH affect enzyme activity?

• It changes the enzyme's shape, affecting its function.

• It increases the enzyme's concentration.

• It decreases the enzyme's concentration.

• It has no effect on enzyme activity.

Describe the structure of DNA.

• Single-stranded helix

• Double-stranded helix

• Triple-stranded helix

• Quadruple-stranded helix

Which macromolecule serves as the main component of cell membranes?

• Proteins

• Carbohydrates

• Lipids

• Nucleic acids

What is the function of the Golgi apparatus in a cell?

• Energy production

• Protein modification and packaging

• DNA replication

• Photosynthesis

Which of the following is a characteristic of prokaryotic cells?

• They have a nucleus.

• They lack membrane-bound organelles.

• They have multiple chromosomes.

• They have a complex cytoskeleton.