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Name:______________________________________________________ Date: ______________ Period:_____
BASIC UNIT OF LIFE: THE CELL
What is an organism?
Life form that uses ____________ to live
What four characteristics are 1) ________________
common to all living things? 2) the ability to ____________ and _________
(C 10)
3) the ability to ___________ to the ___________________
4) the ability to ________________
***If it does not have these characteristics, then it is _____________
What are the three things
1) ____________ (all energy used by life comes from the _______)
every organism needs in
2) ____________
order to live? (C 10)
3) ____________ to live
What is a cell? (C 11)
The _______________ unit of a living thing. It is the smallest part of an organism
that is still considered “__________”
What are unicellular
They are made of a ___________ cell. They are usually too ______ for you to
organisms? (C 11)
_______ directly. (ex. Found in _______ water, bacteria)
What are multicellular
They are made up of __________ cells. You can __________ these organisms.
organisms? (C 11)
(ex. Frog) Multicellular organisms have bodies that are more __________.
Different parts of the body of a multicellular organism perform different
____________. Cells _____________ to meet basic needs.
Stop and think:
1. For each of the following, say if they are living or nonliving.
a. A tree __________________
c. An insect _____________________
b. A cat ___________________
d. A desk _______________________
What is a microscope?
Which scientist gave the
cell its name? (C 12)
What is made of cells?
Where do cells come
from? (C 13)
State the three concepts
of the cell theory. (C 13)
What is a theory?
Who was Louis Pasteur?
(C 14)
What is spontaneous
generation? (C 14)
What experiment did
Pasteur do? (C 15)
An instrument which makes an object appear __________ than it is.
gave the cell its ________ in the 1660s while looking at a
sample of ________ (a layer of bark taken from an oak tree); he saw tiny compartments that
looked like empty “_______,” and he called these ______. Hooke was actually looking at
_______ cells, which is why they appeared _________.
was the first person to look at _______ cells in the 1670s; when looking at a drop of
________________, he saw _______________ organisms moving around.
Cells _________. One living cell divides into _____ living cells. (Cells come from
______________)
1) _________ living thing is made of ____________________ cells
2) Cells carry out the ____________ needed to support ___________
3) Cells come _______ from other _______________________
It is a widely accepted explanation of things observed in ____________. A theory must be
supported by _________________.
___________ scientist who observed that milk that turned ______ contained large numbers of
____________. He developed a process that used _______ to kill the bacteria. This is called
pasteurization and keeps milk __________ longer. He thought ___________ might also cause
illness in ____________.
The idea that bacteria grew from __________________ materials. Pasteur conducted an
experiment to show that this was ________________.
Stop and Think:
1.
Explain why the microscope was such an important tool?
2. Explain how Pasteur’s experiment supported cell theory and disproved the theory of spontaneous
generation.
3. What do scientists mean when they say that life comes from life?
Cells Vocabulary: Chapter 1
Word
Multicellular (11)
Unicellular (11)
Microscope (12)
Bacteria (14)
Cell Membrane (20)
Cytoplasm (20)
Nucleus (20)
Eukaryotic Cell (20)
Prokaryotic Cell (20)
Organelle (20)
Cell Wall (21)
Chloroplast (23)
Mitochondria (23)
Specialization (28)
Definition
Picture or Example