Chapter 2:cells Flashcards
What does animals structure include
-nucleus
-cell membrane
-ribosomes
-mitochondria
-cytoplasm
Structure of plant cell
-cell membrane
-cell wall
-ribosome
-permanent vacuole
-cytoplasm
-mitochondria
-nucleus
-chloroplast
What characteristics are common in plant cell and animal cells
-cell membrane
-ribosomes
-cytoplasm
-mitrochondria
-nucleus
What characteristics differ from plant cells and animal cells
Plant cells also include:
-cell wall
-chloroplast
-permanent vacuole
Structure of a bacteria cell
-Cell wall
-Cell membrane
-circular loop of DNA
-plasmid
-ribosomes
-cytoplasm
Function of nucleus
-contains chromosomes made of the genetic material which controls all the activities of the cells
Function of cytoplasm
-jelly like substance where many metabolic reactions take place
-supports internal cell structures
-a gel like substance composed of water and dissolved solutes
Function of cell membrane
-partially permeable so some substances will go through some won’t
-hold the cell together
-seperates the inside of the cell from the outside of the cell
Function of ribosomes
-site of protein synthesis
Function of mitochondria
-energy is released from glucose
Function of cell wall
-protect the cell
-supports the cell
-gives shape to the cell
Function of chloroplast
-contains green chlorophyll and enzymes for photosynthesis
Function of vacuole
-contains cell sap:a solution of sugar and salt dissolved in water
Storage for certain materials
Function of plasmid
-contains extra genes to those found in the chromosomal DNA
What did specialised cell
Cells which have developed certain characteristics in order to perform particular functions
Function of ciliates cells
Movement of mucus in the trachea and bronchi
Function of root hair cells
Absorption
Function of palisade mesophyll cells
Photosynthesis
Function of neurones
Conduction of electrical impulses
Function of red blood cells
Transport of oxygen
Function of sperm and egg cells
Reproduction
What is tissues
A group of cells with similar structures,working together to perform a shared function
What is a organ
A structure made of a group of tissues,working together to perform a specific function
Example of organ
Stomach
What is organ system
A group of organs with related functions working together to perform body function d
Example of organ system
Digestive system
How are organisms made
Cells make up tissues which makes up organs which make up organ systems which makes up organisms
Equation for magnification
Magnification =image size / actual size
Unit of magnification
It had a X in front of it
Hos to convert micrometer to millimetre
Divide by 1000
