characteristics of life and viruses
All living things are made up of?
Cells
What type of charge does a proton have?
Positive
Who was credited with inventing the first microscope?
Zacharius Jansen
What is the function of the cell wall?
It protects the cell and gives it structure.
Is the cell membrane considered selectively permeable?
yes
What is the basic unit of life?
Cells
What type of charge does a neutron have?
No charge
Who looked at cork cells through a microscope?
Robert Hooke
What is the function of lysosomes?
Contain enzymes to begin breaking down food.
Is the phosphate head hydrophilic or hydrophobic?
Hydrophilic
All living things grow and...
Develop
What charge does an electron have?
Negative
Who concluded that all plants are made of cells?
Mathias Schleiden
What is the function of the central vacuole?
Stores water.
Are lipid tales Hydrophilic or hydrophobic?
Hydrophobic
What is the levels of organization in order?
cell,tissue,organ,organ system, and finally organism.
Whats an element?
A pure substance
Who concluded that all animals are made of cells?
Theodore Schwann
What is the function of ribosomes?
What is the function of cholesterol?
Provides structure to the cell membrane and prevents fatty acid chains from sticking together.
Are viruses living or non-living
Non-living
where are protons and neutrons located?
Nucleus
Who concluded that New cells come from preexisting cells?
Rudolf Virchow
What is the function of the mitochondria?
The power house of the cell.
What is the name of the cell membrane model?
Fluid mosaic model