Cells (from textbooks) Flashcards
Examples of prokaryotes?
Bacteria & blue-green algae
Characteristics of prokaryotes?
unicellular organisms
cells have a cell wall
cells lack a true nucleus so their DNA is free in the cell
Cells lack other membrane bound organelles
Most feed by absorbing food eg(tuberculosis and bacterium)
Examples of protoctista
protozoa and algae
characteristics of protoctista
most are unicellular but some are also multicellular but they lack any complex development of tissues and organs
cells have a true nucleus and are surrounded by a membrane and other membrane bound organelles
protozoans are animal like and ingest food or absorb food
algae are plant like, contain chlorophyll and make their own food by photosynthesis
examples of algae
amoeba, paramecium, euglena, sargassum (seaweed)
examples of fungi
yeasts, molds and mushrooms
characteristics of fungi
most are multicellular with a body composed of hyphae, a few are unicellular
cells have cell walls that contain chitin
cells lack chlorophyll
most reproduce by spores
feed by absorbing food
another name for plants
plantaea
another name for animals
animalia
another name for cell membrane
plasma membrane
The cytoplasm and nucleus together are referred to as ?
protoplasm
What are the four other structures collectively referred to as the nucleus ?
nuclear membrane
nucleoplasm
chromatin thread
nucleolus
What are glycogen granules
a food store in animal cells
What is the cell membrane composed of?
protein and lipid
What is the cytoplasm composed?
about 80% water and 20% dissolved substances including protein
