Cell movement
What is diffusion?
Movement of particles from high to low concentration.
What is the pH scale?
A scale used to measure how acidic or basic something is.
What are macronutrients?
Nutrients needed in large amounts.
What are organic compounds?
Compounds that contain carbon.
What is a substrate?
The surface an organism lives on.
What is osmosis?
Movement of water across a semipermeable membrane.
What is an acid?
A substance that releases hydrogen ions (H⁺) in water.
What are micronutrients?
Nutrients needed in very small amounts.
What are inorganic compounds?
Compounds that usually do not contain carbon.
What are pesticides?
Chemicals used to kill or control pests.
What is active transport?
Movement of substances from low to high concentration using energy.
What is a base?
A substance that releases hydroxide ions (OH⁻) in water.
what are the 3 main nutrients in fertiliser?
nitrogen, phosphorus, and potassium.
What are the carbon exeptions for a inorganic compond?
carbon dioxide and carbon monoxide
What is the function of carbohydrates?
To provide energy.
What is a semipermeable membrane?
A membrane that lets some substances pass but not others.
What is a neutral solution?
A solution with a pH of 7.
What is nitrogen fixation?
The process of converting nitrogen gas into usable forms.
What is fuel combustion?
Hydrocarbon + oxygen → carbon dioxide + water + energy.
What is the function of proteins?
To build and repair tissues.
What is the diffrence between diffusion and osmosis?
Diffusion is the movement of any particles from high to low concentration, while osmosis is the movement of water only across a semipermeable membrane.
What is acid rain?
acid rain is form with the mix of Sulfur dioxides and Nitrogen oxides
What are nitrates?
A form of nitrogen that plants absorb from the soil.
What are the 4 main organic molecules in living things?
carbohydrates, lipids, proteins, and nucleic acids.
What is the nitrogen cycle?
The process by which nitrogen moves through the environment, being converted into different forms and absorbed by plants from the soil.