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, What is a membrane comparable to? a semi-permeable plastic pag
What is the membrane composed of? phospholipids
What are transport holes? proteins that help certain molecules and ions move in and out of the cell
What is cytoplasm? the fluid that fills the cell; aka cytosol
What are organelles? groups of complex molecules that help a cell survive; larger the cell the more
organelles needed
What do all cells contain? DNA and RNA
What can all cells do? synthesize protein
What does each cell of an organism consist of? nucleic acids, cytoplasm, and a cell membrane
What are make the mitochondria and chloroplasts they are specialized organelles that have specific functions within the cell
unique?
How do single-celled organisms differ from multicellular? single-celled organisms contain all of the components necessary for life, while
multicellular organism cells can be specialized
How does life begin on the cellular level? life begins as a single cell by either asexual or sexual reproduction
How are cells grouped together? in tissues
How are tissues grouped together? in organs
How are organs grouped together? in systems
What is a considered a complete individual? an organism
What are ribosomes involved in? synthesizing proteins from amino acids
How many ribosomes are in a single cell? numerous and take up about one quarter of the cell
Where are ribosomes located in the cell? some are mobile and some are embedded in the endoplasmic reticulum
What does the golgi apparatus (golgi complex) do? synthesizes materials such as proteins that are transported out of the cell