Microscopic World Quiz: 15 Biology Questions
The microscopic world is invisible to the naked eye but essential to life. Bacteria, viruses, cells, tardigrades… How many of these tiny wonders do you know?
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Frequently asked questions: The Microscopic World
A preview of what awaits you in this the microscopic world quiz: 15 multiple choice questions, each with a detailed explanation so you learn as you play. Here are a few sample questions (and their answers, no peeking before you play!).
What is the fundamental difference between a bacterium and a virus?
Answer: Bacteria are living cells, whereas viruses cannot reproduce on their own. Bacteria are living single-celled organisms that can reproduce on their own. Viruses, which are much smaller, are not considered alive because they need a host cell in order to multiply.
How do most bacteria reproduce?
Answer: By binary fission (splitting in two). Most bacteria reproduce by binary fission: the parent cell splits into two identical daughter cells. In optimal conditions, some bacteria can divide every 20 minutes.
What is the human microbiome?
Answer: All the micro-organisms that live in and on our body. The human microbiome refers to the billions of micro-organisms (bacteria, viruses, fungi) that live in and on our body, mainly in the gut. They play a crucial role in digestion, immunity and even mood.
What are mitochondria in a cell?
Answer: The organelles that produce the cell's energy (ATP). Mitochondria are often called the "powerhouses" of the cell. They produce ATP (adenosine triphosphate), the molecule that supplies the energy needed for almost all cell functions.
What is a bacteriophage virus?
Answer: A virus that specifically infects bacteria. A bacteriophage (or "phage") is a virus that infects and reproduces exclusively inside bacteria. Phages are the most abundant biological entities on Earth and are being researched as a way to fight antibiotic-resistant bacteria.
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