organisation of the organism Flashcards
cell structure of a plant
cell wall- a rigid outer layer made of cellulose that provides support and protection to the cell
cell membrane- a permeable membrane that encloses the cell and controls the passage of substances in and out of cells
nucleus- the control center of the cell, containing DNA and responsible for regulating cell activities
cytoplasm- a gel like substance filling the cell and supporting various cellular components
chloroplast- organelles that are responsible for photosynthesis
ribosomes- site of protein synthesis
mitochondria- organelles involved in cellular respiration
vacuoles- large fluid like sacs, that store water, nutrients and waste materials
cell structure of a animal cell
cell membrane- a flexible barrier that encloses the cell ,controlling the movement of substances in and out
nucleus- controls cell activities and contain genetic material
cytoplasm- gel like substance that fills the cell, providing support to the organelles
ribosomes- responsible for protein synthesis
mitochondria- produces energy for the cell via cellular respiration
vacuoles- store water, nutrients and waste materials
cell structure of a bacterial cell
cell wall- the rigid outer layer providing support and protection
cell membrane- a thin layer that separates the cell from its external environment and regulates the entry and exit por favor substances
cytoplasm- the semi-fluid matrix inside the cell where metabolic reactions occur
ribosomes- responsible for protein synthesis
circular DNA- contain genetic information
plasmids- extrachromosomal DNA, they contain extra genes that provide advantages.
how are new cells produced?
new cells are produced by division of existing cells
what are the specialised cells functions?
ciliated cells- movement of mucus in the trachea and bronchi
root hair cells- absorption of mineral from the soil to the plant
palisade mesophyll cells- photosynthesis
neurons- conduction of electrical impulses
red blood cells- transport oxygen around the body
sperm and egg cells- reproduction
functions of cells, tissue, organ, organ system, organism
cell- makes up all living organisms and tissue in the body
tissue- a group of similar cells that work together to preform a specific function or job
organ- a structure made up of different types of tissues that work together
organ system- a group of organs that work together to perform a major function or support a specific process in the body
organism- a complete living thing made up from different organ systems
formula of magnification
the formula= magnification= image size divided ny real size
