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Science B4

QuestionAnswer
What is the smallest basic unit? Cells
Who was the first person to describe cells? Robert Hooke
Who discovered single-celled organisms? (Including bacteria) Anton Van Leeuwenhoek
Who concluded that all plant parts are made of cells? Matthias Schleiden
Who concluded that all animal tissues are made of cells? Theodor Schwann
Who concluded that all cells come from existing cells? Rudolf Virchow
Why can a chicken egg grow so large? Because 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 surface area of the cell by the cell's volume.
What are the 3 parts of the cell theory? 1.)All organisms are made of cells. 2.)The cell is the basic unit of all living things. 3.)All cells come from existing cells.
What kind of cells have cell walls? Plants and fungi
What is the protective layer that covers a cells surface? The cell membrane
What is the fluid inside of a cell? The cytoplasm
What is the structure that preforms a specific function in the cells? The organelle
What is the genetic material that carries information needed to make new cells or organisms? DNA
What is the organelle that contains the DNA and has a role in growth,metabolism, and reproduction? The nucleus
What parts do all cells have in common? Cell membrane,Organelles, cytoplasm and DNA
What are the two basic kinds of cells? Prokaryotes and Eukaryotes
What are Prokaryotes? Single-celled organisms that do not have a nucleus or membrane-bound organelles
What are the most common types of prokaryotes? Eubacteria and Bacteria.
What are ribosomes? A cell organelle compised of RNA and protein.
How do eubacteria and archaebacteria differ? The ribosomes are different.
What are 3 different types of archeabacteria? Heat-loving, salt-loving, and methane making.
How do eukaryotes compare in size to prokaryotes? Eukaryotes are about 10 times larger!
What does a eukaryotic cell have that a prokaryotic cell doesn't? Cells with a nucleus.
What type of cells are humans? Eukaryotes or Prokaryotes? Eukaryote
What does "MULTI-CELLULAR" mean? Many cells
What is the function of a cell wall? To give support and protection to the cell.
What are the cell walls of plants and algae made of? Cellulose
What are cell walls of fungi made of? Chitin
What is a cell membrane? A protective layer that covers a cells surface.
What are 3 types of compounds contained in the cell membrane? Proteins, Lipdis, and fospholipdis.
What 2 substances control the movement of materials in and out of the cell? Proteins and lipdis.
What is the web of proteins in the cytoplasm known as? an organelle
What are the two functions of the cytoskeleton? It helps the cell move and keeps it from collapsing.
Created by: aubreywalters