Antibiotics and Bacterial Reproduction Quiz

What is the primary function of antibiotics?

• To kill viruses

• To increase bacterial reproduction

• To enhance human cell growth

• To destroy bacterial cell walls

Who discovered penicillin and how?

• Louis Pasteur, through fermentation

• Alexander Fleming, by accident

• Robert Koch, through staining techniques

• Edward Jenner, by vaccination

Why is penicillin ineffective against gram-negative bacteria?

• They are resistant to all antibiotics

• They have an outer membrane

• They lack a cell wall

• They reproduce too quickly

What is a practical way to test the effectiveness of antibiotics?

• Measuring bacterial growth in a petri dish

• Using a microscope to observe bacteria

• Soaking filter paper discs in antibiotics and placing them on an agar plate

• Counting the number of bacteria under a microscope

Why are antibiotics ineffective against viruses?

• Viruses are too small

• Viruses have a cell wall

• Viruses have a protein coat and no cell wall

• Viruses reproduce too quickly

What is the main method of bacterial reproduction?

• Conjugation

• Budding

• Binary fission

• Mitosis

What is the role of the TI plasmid in crown gall disease?

• It protects the plant from other bacteria

• It introduces DNA into the plant cells

• It helps the plant grow faster

• It kills the plant cells

How do scientists use Agrobacterium tumefaciens in genetic engineering?

• To increase plant growth

• To introduce new DNA into plant genomes

• To prevent plant diseases

• To kill harmful bacteria

What is a bacteriophage?

• A type of bacteria

• A virus that infects bacteria

• A plant pathogen

• A fungal spore

What is the potential use of bacteriophages in genetic engineering?

• To change bacterial DNA

• To prevent bacterial infections

• To increase bacterial reproduction

• To kill plant cells