Living Things Flashcards
(22 cards)
What are the seven characteristics of living things
Nutrition Respiration Excretion Growth Reproduction Movement Response
Nutrition
The way a living thing gets their food
Respiration
The release of energy from food
Excretion
The removal from the body of the waste products of chemical reactions
Movement
Animals respond to stimuli and move from place to place
Growth
All living things grow
Reproduction
All living things reproduce
Cells
All living things are made up of cells
What is a vertebrae
An animal that has a backbone
What are invertebrates
Animals with no backbone
Chloroplasts
Contained in the plant cell. They contain clorophyll which plants use to make food
Vacuole
Space in a plant cell filled with sap
Cell membrane
A thick skin contained in both the plant and animal cell that controls what enters and leaves the cell.
Nucleus
Controls the cells activities. Contained in both the plant and animal cell.
Cytoplasm
A jelly like fluid in which food, minerals and salts are dissolved. Contained in both the plant and animal cell.
What is contained in a plant cell
Chloroplasts, a cell wall, a vacuole, a cell membrane a nucleus and a cyroplasm
What is contained in an animal cell
A cell membrane a nucleus and a cytoplasm.
Some have temporary vacuoles
What is cell division
A single cell divides into two parts. These parts divide again and again. Growth in animals and plants is a result of cell division
What is a tissue
A group of similar cells with a special function.
eg muscle cells, nerve cells and blood cells
What is an organs
An organ is a group of tissues that work together to perform a special function. For example, a nose contains skins tissue,bone tissue and blood tissue. A leaf contains phloem and xylem tissue.
What is a system
A group of organs working together.
Eg the digestive system consists of the oesophagus the stomach and the intestines.
Describe an experiment to prepare a slide from a plant tissue
Place drop of water on centre of glass slide. Add a drop of iodine.
Cut onion open on cutting board and use a forceps to peel away a small piece from one of the inner layers of the onions skin.
Spread the onion skin onto the water on the slide and put cover slip over.
Examine onion cells under high power and low power magnification.
Make a sketch of the onion cells.
As a result the nuclei are easier to see.
