MICROSCOPY & MICRO-ORGANISMS
We use this piece of equipment to view tiny cells and microorganisms.
What is a microscope?
This structure controls what goes in and out of the cell.
What is the cell membrane?
These cells carry oxygen around the body.
What are red blood cells?
These are the tiny things that all matter is made of, according to the particle model.
What are particles (atoms or molecules)?
A pure substance made of only one type of atom is called this.
What is an element?
This is the total magnification if the eyepiece is ×10 and the objective is ×4.
What is ×40?
This plant cell structure is rigid and helps the cell keep its shape.
What is the cell wall?
These cells have long extensions to carry electrical messages around the body.
What are neurones (nerve cells)?
In this state of matter, particles are very close together and arranged in a fixed pattern.
What is a solid?
A substance made from two or more different types of atoms that are chemically joined is called this.
What is a compound?
This blue-coloured liquid is used to make the nucleus easier to see in cheek cells.
What is a nuclear stain (e.g. methylene blue)?
This green structure in plant cells absorbs light for photosynthesis.
What is the chloroplast?
These cells have tiny hairs that move mucus in the airways.
What are ciliated cells?
In this state of matter, particles can move around each other but are still touching.
What is a liquid?
A substance made from two or more substances simply mixed but not chemically joined is called this.
What is a mixture?
Microorganisms are often described as this, because they are made of just one cell.
What is single-celled / unicellular?
This jelly-like substance inside the cell is where many reactions happen.
What is the cytoplasm?
These plant cells have a large surface area to absorb water from the soil.
What are root hair cells?
In this state of matter, particles are far apart and move quickly in all directions.
What is a gas?
A mixture of a metal with other elements (often other metals) is called this and includes examples like steel.
What is an alloy?
In the collapsing-can demo, heating the can first changes this inside it before it is suddenly crushed.
What is the air/water vapour pressure inside the can?
This large, fluid-filled structure in a plant cell helps maintain turgor (firmness).
What is the vacuole?
Fill in the missing level of organisation: cells → ______ → organs → organ systems.
What are tissues?
Gases can be compressed because of this feature of their particles.
What is they are far apart with lots of empty space between them?
These are the two main groupings of elements on the Periodic Table, based on their physical properties.
What are metals and non-metals?