Download Cell Test Review Answer Key

Cells Test Review Questions Answer Key
Name: _____________________________ Date: _____________ Hour: ___________
Vocabulary
1. __k___ Stem Cells
2. __j___ Specialized Cell
3. __b___ Cells
4. __l___ Tissues
5. __g___ Organs
6. __h___ Organ Systems
7. __d___ Diffusion
8. __c___ Cell Division
9. __i___ Osmosis
10. __e___ Endocytosis
11. __f___ Exocytosis
12. __a___ Active
Transport
a. The movement of substances across a cell membrane that
requires energy.
b. The smallest unit that can perform all the processes
necessary for life.
c. Occurs when one cell becomes two cells.
d. Particles move from areas of higher concentration to
lower concentration.
e. The movement of large particles into the cell.
f. The movement of large particles out of the cell.
g. Consists of two or more tissues working together to
perform a single job.
h. Consists of two or more organs working together.
i. The diffusion of water through a semi-permeable
membrane.
j. A cell such as red blood cells, muscle cells or neurons
that have a particular structure and function.
k. A cell that has the ability to turn into many different
types of cells.
l. A groups of cells working together to perform a single
function.
Cell Parts
Cytoplasm
13. Label the diagram above with each of the following cell parts and tell what their function is.
Organelle
Found in Animal
Function (job)
Cells
Cell Membrane
Yes
Boundary that separates the organism from its
surroundings.
Cell Wall
No
A rigid structure that surrounds the cell
membrane and provides support to the plant cell.
Nucleus
Yes
Control center of the cell which contains the
DNA.
Mitochondria
Yes
A provider of energy for a cell. It breaks down
glucose for energy.
Vacuole
Yes
Cell organelle that stores materials such as water,
salts, proteins, and carbohydrates.
Chloroplast
No
An organelle found in plant and algae cells where
photosynthesis occurs.
Cytoplasm
Yes
A jellylike fluid inside the cell in which the
organelles are suspended.
Put It All Together
14. Fill out the Venn diagram for plant and animal cells.
Plant cells are
able to produce
glucose through
photosynthesis
within their
chloroplasts and
have cell walls
for additional
support. They
also have larger
vacuoles than
animal cells.
Cells make up all living
things.
Cells exist in single
celled and multicelled
organisms.
All plant and animal
cells have a cell
membrane, cytoplasm,
vacuoles, mitochondria,
and nucleus.
15. What kinds of things are made of cells?
All living things are made of cells.
Animal cells
are multi-celled
organisms that do
not have
chloroplasts, cell
walls and only
have small
vacuoles.
16. Circle all of the following that are made of cells.
a. Leaf of a plant
b. Air
c. Spoonful of salt
d. Cap of a mushroom
e.
f.
g.
h.
Diamond necklace
Blood
Protein
Horse’s Muscle
17. Diffusion, osmosis, endocytosis and exocytosis all function to bring materials into and out of
the cell. How are they different from one another?
Diffusion is the general term for movement of a substance from an area of high
concentration to low concentration. Osmosis is the specific term for the diffusion of water
through a membrane. Endocytosis and exocytosis refer to the movement of large particles
into (endocytosis) and out of (exocytosis) the cell.
18. Describe how a single-celled organism grows and develops.
A single-celled organism has the ability to grow to an extent, at which point the cell
divides into two through binary fission to become two separate organisms.
19. Describe how a multicellular organism grows and develops.
A multicellular organism begins as two stem cells. Initially those stem cells divide
creating new stem cells. At some point the cells divide and become specialized. These
specialized cells continue to divide creating more cells with the same specialization. The
specialized cells create tissues which create organs and organ systems.
20. How is a stem cell related to the growth and development in a multicellular organism?
All multicellular organisms begin as stem cells. Stem cells can become any other type of
cells. Eventually these stem cells specialize.
21. What are some examples of specialized cells?
Red blood cells, cardiac muscle cells, neurons
22. How are single-celled organisms different from multicellular organisms?
Single-celled organisms consist of only one cell. This single cell has the ability to
perform all of the tasks necessary for life. Multicellular organisms are made of many
cells. The organism itself can be large or small. It is composed of specialized cells which
work together to perform the processes necessary for life.
23. Give an example of a single-celled organism and an example of a multicellular organism.
Bacteria, paramecium and amoeba are examples of single-celled organisms. Multicellular
organisms include trees, tulip plants, insects, and humans.
24. Put the following in the correct order from smallest to largest:
Atom
Tissue
Molecule
Cell
Organism
Organ
Organ System
Atom – Molecule – Cell – Tissue – Organ – Organ System - Organism
25. Where do all cells come from?
Other cells
26. Using the terms sensory cells, neurons, stimulus, and brain. Describe what happens when you
step on a Lego.
When a foot steps on a Lego, the Lego acts as a stimulus to the sensory cells on the foot.
These sensory cells send a signal through the neurons to my brain. In the brain other
neurons send messages back to my leg and foot muscles to pick up my foot quickly!