Chapter 7 Flashcards
What is the purpose of antibiotics
Breaks down cell wall and water floods the cell and kills it
An protist is a
Eukaryote
What makes its own food
Producer
Autotroph
What helps maintain homeostasis
Cell membrane
What does a red blood cell do
Transports oxygen
Stem cells can become whatever you want them to be because they’re not
Specialized
What are the levels of organization
Cells Tissues Organs Organ systems Organism
Are electron microscopes more powerful than light microscopes
Yes
Electron microscopes can only be used to see
Non living things
Preserved cells
Tissues
What is a transmission electron microscope used for TEMs
Used to study cell structures and large protein molecules
Specimens must be cut into ultra thin slices
A scanning electron microscopes SEMs produces what kind of image
3D images
Specimens don’t have to be cut
Cells come in a variety of shapes and sizes true or false
True
All cells are surrounded by what
Cell membrane
At some point all cells contain what
DNA
Cells are classified by what two categories
If it does/doesn’t have internal membranes bound by organelles
What has no organelles
Prokaryotes
In eukaryotes DNA is separate from the rest of the cell true or false
True
Examples of eukaryotes are
Plants
Animals
Fungi
Protists
Cell theory states that new cells are produced from
Existing cells
The person who first used the term cell was
Robert Hooke
Electron microscopes are capable of revealing more details than light microscopes because
The wavelengths of electrons are shorter than those of light
Is a bacterium a prokaryote
Yes
One way prokaryotes differ from eukaryotes is that they
Do not have a membrane separating DNA for the rest of the cell
What are the two major parts of a eukaryotic cell
Nucleus
Cytoplasm
