Flashcards in Chapter 3 Deck (20):
Robert Hooke discovered..
Anton van Leewenhuek discovered..
Plants are made of cells
All living things are made of cells
Define cell theory
Unifying concept of biology
Cell theory 3 principles:
-All organisms are made of cells;
-All cells are produced by other living cells;
-The cell is the basic unit of life
Levels of organization:
What are the basic units of life?
group of cells that have the same basic structure & function
Tissues grouped together to create complex functions
Group of organs working together to complete a function
Characteristics Shared by Most Cells:
What is the structure of the nucleus?
is composed of Cell's DNA enclosed in double-membrane or Nuclear Envelope
What kind of cells were observed in the cheek lab?
Eukaryotic cells because you could see the nucleus
What are chromosomes made of?
What are chromosomes consisted of?
contains instructions for traits & characteristics
What are cell membranes composed of?
2 phospholipid layers
What is the head & tail of a Phospholipid Bilayer?
Hydrophilic & Hydrophobic
Define the opposites Hydrophilic & Hydrophobic.
Hydrophilic: polar, likes & is attracted to water
Hydrophobic: non polar, does NOT like & repels water