cell biology Flashcards
(17 cards)
how big are animal cells
0.01-0.05 nano meters
how big are plant cells
0.01-0.10 nano meters
how has the sperm cell adapted
lot of mitochondria in the mid section aswell as a large tail
how has the nerve cell adapted
has branches to communicate with other cells fatty sheath which insulates the cell and speeds up nerve impulses
how has the phloem adapted
Dissolved sugars and amino acids can be transported both up and down the stem. Companion cells, adjacent to the sieve tubes provide energy required to transport substances in the phloem
how has the xylem adapted
no top or bottom walls so continous flow of water walls are thick and woody
what is the formula of magnification
manification =sise of image /real sise of object
what is a nucles
contains genitic material including dna and controls reactions in the cell
what is a cytoplasm
a jelly like material that fills a cell houses and supports all the cell’s organelles
what is a cell membrane
its a permiable strucrue that controls what go in and out of the cell
what is a mitocondria
a cell orgenell that carries out reperation (for energy)
what is a ribosme
a cell orginell that carries out protein synthises
what is a vacoule
its a sac filled with sap or other liquid to keep the cell turgid (pant cell)
what is a chloroplast
a cell orgenell that carries out photosynthisismade to make a cells food (plant cell)
what is a cell wall
helps support the plants structure (plant cell)
what is a prokaryotic cell
prokaryote is a single-celled organism whose cell lacks a nucleus and other membrane-bound organelles.
what is a eukaryotic cell
The eukaryotes constitute the domain of Eukaryota or Eukarya, organisms whose cells have a membrane-bound nucleus. All animals, plants, fungi, seaweeds, and many unicellular organisms are eukaryotes.
