Download 1.3-2 Prokaryotic and Eukaryotic Cells Student

Prokaryotic and Eukaryotic Cells 1.3-2 Student
Nucleus- a structure enclosed by a membrane that contains most of the cell’s _________. Eukaryotic cells
have a ________________ and Prokaryotic cells do not.
Prokaryotic Cells- lack a nucleus so the DNA _____________ in the cytoplasm.
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All organisms in the _________________ and Archaea Domains are prokaryotic.
All prokaryotes are __________________ organisms.
Eukaryotic Cells- contain a nucleus
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___________ and more complex than prokaryotic cells
Belong to the __________________ Domain
Most eukaryotes are multicellular, but some are unicellular
Eukaryotic cells have _____________________.
Organelles- any _________________ inside a cell that is enclosed by a membrane. Different organelles have
different _____________. Ex: nucleus, mitochondria
Levels of Organization
Specialized Cells- Multicellular organisms have many different types of _____________________ cells
- Each specialized cell has a particular _____________
- Cells with special functions generally have a _____________ that suits them for that job
- Ex: The function of a red blood cell is to carry oxygen to other cells. A red blood cell is small and
smooth. This helps it slip through small blood vessels. A red blood cell is also shaped like a fattened
disc. This gives it a lot of surface area for transferring oxygen.
Levels of Organization- Cells – Tissues- Organs- Organ Systems- Organism
Tissue- a group of __________ of the same kind that performs the same function
- Ex: muscle cells are organized into muscle tissue
Organ- a structure composed of two or more types of ______________ that work together to do a specific
task
- Ex: Stomach- consists of muscle, nerve, and other types of tissues Its task is to digest food
Organ system- a group of _______________ that work together to do the same job
- Ex: the stomach is part of the digestive system
Organism- Organ systems are organized into the ________________. The different organ systems work
_________________ to carry out all the life functions of the individual.
Why Are Cells So Small?
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Cells are so small that their diameter is measured in _____________________
To carry out life processes, a cell must be able to pass substances into and out of the cell. Anything
that enters or leaves a cell has to go through the cell _______________ on the surface of the cell.
A bigger cell needs more ______________ and creates more ____________. As the size of a cell
increases, its volume increases more quickly than its surface area. If the volume of a cell becomes too
great, it won’t have enough surface area to transfer all of its nutrients and wastes.