Card Set Information
Biology (chapter 7)
All cells arise from
The basic unit of structure & function in an organism is the _____
As cells size decreases, its surface area-to-volume ratio _______
"cells arise only from exsisting cells" is part of the ____________
The surface area-to-volume ratio limits a cell's _____
Eukaryotic cells contain specialized structures called __________
A cell with a nucleus is a ________ cell
Scientists think that _______ cells evolved about 1.5 billion yrs ago
All substances that enter or leave a cell must cross the cell__________
The _______ houses a cell's DNA, which contains genetic material
The organelles where protein synthesis occurs in a cell are the _______
Prokaryotic cells have a cell ______ that surround cell membrane
Some prokaryotic cells have a ________ that surrounds the cell wall
____________ cells have a system of internal membranes that divides the cytoplasm into compartments
The web of protein fibers that support the shape of cell is____________
The cytoskeleton's network of __________ fibers anchors cell organelles
A ribosome is made of _____ and many proteins
DNA instructions are copied as ____ messages
Ribosomes use RNA messages to assemble _________
The ____________ is a structure that makes ribosomes parts in the nucleus
Rough ER has ___________ attatched to its surface
____________ ER has no attatvhed ribosomes
Vesicles that contain newly made proteins move through the ____________ from the ER to the Golgi Apparatus
Vesicle help maintain _____________ by storing and realeasing various substances as the cell needs them
Lysosomes work by fusing with other ____________
Photosynethesis takes place in the _______ of plant cells
Both plant & animal cells have cell membranes. But plant cells are surrounded by a ____________
In multicellular organisms, similar cells group together to make ____________
A group of identical cells that can survive alone if separated are called ____________ organisms
What are the three parts of the cell theory?
*all cells arise from exsisting cells
*Cells are the basic structures & functions in an organism
*All living things are made up of 1 or more cells
Whats happens to a cell's surfave area-to-volume ration as the cell gets larger?
What is the difference in the location of DNA in a prokaryotic cell and in a eukaryotic cell?
DNA is in the nuclues in eukaryotic cells
What is the functions of organelles in eukaryotic cells?
carry out specialized functions
What kind of ribosomes make proteins that remain inside the cell?
Whats the function of the contractile vacoule in a protist?
holds and carries out water
What are three extra structures in plant cells?
Chloroplast, cell wall, central vacoule
What are the levels of organization of cells in multicellular organism