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cell science
cell organelles
Question | Answer |
---|---|
what is the smallest unit that can do all of things necessary for lif? | A Cell |
Who was the first person to descride cells? | Robert Hooke |
who discovered single-cell oragnisms including bacterira? | Anton Van Leeuwenhoke |
Who concluded that plant parts were made of cells? | Matthias Schleiden |
Who concluded that all animal tissuse were made of cells? | Theodor schwann |
Who cuncluded that all cells come from existing cells? | Rudolf Virchow |
Why can chicken egg grow so large? | It does not have to take in nutrients |
What limits most cells to a very small size? | The surface area-to-volume ratio of the cell |
How would you calculate the surface area-to-volume ratio? | Divide the total volume by the surface area |
What are the three parts of the cell throry? | All organisms are made of one or more cells The cell is the basic unit of all living things All cells come from exsiting cells |
What kind of cells have cell walls? | Plants and fungi have cell walls |
What is a protective layer that covers a cells surface? | Cell Membrane |
What is the fluid inside a cell? | Cytoplasm |
What is the structure that performs a specific function in the cells? | Organelle |
What is the genectic material that carries information needed to make new cells or new organisms? | DNA |
What is an organelle that contains DNA and has a role in growth ,metabolism, and reproduction? | Nucleus |
What parts do all cells have in common? | Cell Membrane, Organelles, Cytoplasm, and DNA |
What are the two basic kinds of cells? | The cell without a nuclues and cell with a nuclues |
What are prokaryoes? | Are single-celled organisms that don't have a nuclues |
What are tha most common prokaryotes( and the smallest cells)? | the common one is the eubacteria |
What are ribisomes? | They are tiny round organelles made of protein and other material |
How do eubacteria and archaebacteria differ? | Because of the Ribsomes |
What are the three types of archaebacteria? | Heat-loving, Salt-loving , Methane-making |
How do eukaryotes compare in size to prokaryotes? | Eukaryotes are about 10 times larger |
What does a eukaryote have that a prokaryote does not? | Cells with a nuclues |
Which of these words describes humans? | Eukaryote |
What does multicellular mean? | Many cells |
What is the function of a cell? | It gives support to a cell |
What are the cell walls of plant and algae made of? | Cellulose and other materials |
What are cell walls of fungi made of? | Chitin |
What is the cell membrane? | The cell membrane is a protective layer that covers the cells surface,and also seperates contact from the cell enviorment. |
What three types of compounds contained in the cell membrane? | protein, lipids, and phospholipids |
What are two substances control the movement of materials into and out of the cell? | proteins and lipids control the movement of materials. |
A web of proteins in the cytoplasm is known as the ? | cytoskeleton |
What are the two functions of the cytoskeleton? | It keeps the cell membrane from callapsing and helps cells more. |