Some examples from this set of practice questions
1.
what is the basic unit of life and the smallest unit of organisation in living organisms?
Answer: cells
2.
what are the two main types of cells found in living organisms?
Answer: prokaryotic cells and eukaryotic cells
3.
what type of cell lacks a nucleus?
Answer: prokaryotic cells
4.
what is the function of the cell membrane?
Answer: the cell membrane regulates the passage of substances in and out of the cell and provides structural support.
5.
what organelle is responsible for energy production in eukaryotic cells?
Answer: the mitochondria
6.
what is the difference between tissues and organs?
Answer: tissues are groups of similar cells working together. Whereas organs are composed of multiple tissues together to perform specific functions.
7.
what are chloroplasts and where are they found?
Answer: they are organelles found in plant cells and they are responsible for photosynthesis, converting sunlight into energy.
8.
name the organelle where protein synthesis happens.
Answer: ribosomes
9.
define passive transport.
Answer: the movement of substances across the cell membrane without the use of energy, driven by concentration gradient.
10.
what is osmosis and why is it important for cells?
Answer: Osmosis is the diffusion of water molecules across a selectively permeable membrane. It\'s crucial for maintaining water balance in cells.
Some examples from this set of practice questions
1.
what is immunity?
Answer: Immunity is the body\'s ability to resist and fight off infections and diseases.
2.
What is an infectious disease?
Answer: An infectious disease is a disease caused by microorganisms like bacteria, viruses, or fungi that can be transmitted from one individual to another.
3.
What is the role of white blood cells in the immune response?
Answer: White blood cells, such as lymphocytes and phagocytes, are responsible for detecting and destroying pathogens in the body.
4.
How do antibiotics work against bacterial infections?
Answer: Antibiotics kill or inhibit the growth of bacteria by targeting specific bacterial structures or processes.
5.
How does HIV weaken the immune system?
Answer: HIV attacks and damages the immune system\'s white blood cells, weakening the body\'s ability to fight infections.
6.
What is the difference between a virus and a bacterium?
Answer: Viruses are smaller than bacteria and cannot reproduce on their own; they require a host cell to replicate.
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