SAS Science: Cells- The Basic Unit of Life (Ch. 4)
Name:
I.
Date:
Period:
Using Science Skills
For items 1-8, use the diagram of the ANIMAL CELL below to identify the
parts of the cell from the list provided. Fill in the correct letter or letters on your scantron.
a. Nucleus
b. Rough Endoplasmic
Reticulum
c. Smooth Endoplasmic
Reticulum
d. Nucleolus
e. Ribosomes
ab. Nuclear Membrane
ac. Golgi complex
ad. Chromosomes
ae. Cell membrane
bc. Cell wall
bd. Lysosome
be. Mitochondria
cd. Cytoplasm
II.
Multiple Choice
Fill in the letter of the correct answer on the scantron.
9. The smallest structural and functional unit of all living things is a(n)
a. Atom
c. nucleus
b. Organelle
d. cell
10. Where do cells come from?
a. Organelles
c. animacules
b. other cells
d. blood
11. Plant cells are supported by a rigid structure that surrounds the cell membrane called a
a. Golgi complex
c. cell wall
b. Cytoskeleton
d. ribosome
12. In plant and bacterial cells, photosynthesis takes place in
a. Chlorophyll
c. ribosomes
b. Chloroplasts
d. the nucleus
13. The protective barrier surrounding the animal cell, which protects its contents from the cell’s
environment, is the
a. Cytoskeleton
c. cell membrane
b. cell wall
d. central vacuole
14. In plants, the vesicle that stores water and liquids and helps support the cell is called the
a. large central vacuole
c. large central vesicle
b. endoplasmic reticulum
d. lysosome
15. A group of cells working together to perform the same function makes up a(n)
a. organism
c. tissue
b. organ system
d. structure
16. An organ consists of
a. two or more tissues
c. two or more systems
b. a group of cells
d. nerve and muscles
17. DNA is found in what structure in the nucleus?
a. Chromatin
c. centromere
b. Chromosome
d. nucleolus
18. Chromosomes are made up of what?
a. one chromatin and one centromere
b. one chromatin and two centromeres
c. two chromatins and one centromere
d. two chromatins and two centromeres
19. An organ system has
a. only one kind of tissue
c. two or more organs
b. two or more functions
d. only one type of cell
20. How many cells are needed for a unicellular organism to perform all necessary life functions?
a. One
c. thousands
b. Two
d. trillions
21. The activity a cell performs is its
a. Structure
c. function
b. System
d. differentiation
22. The parts of an organism are arranged in a(n)
a. Structure
c. function
b. System
d. organ
23. According to the cell theory, what makes up all living things?
a. only one cell
c. more than one cell
b. one or more cells
d. a system of cells
24. Where is DNA stored in the eukaryotic cell?
a. in the cytoplasm
c. in the ribosome
b. in the nucleus
d. in the lysosome
25. The fluid inside every cell, and almost all of the cells contents, is called the
a. Nucleus
c. organelles
b. Membrane
d. cytoplasm
26. According to the cell theory
a. most organisms are made up of cells
b. some cells are not in an organism
c. cells come from existing cells
d. only animals are made up of cells
27. A cell with a membrane-bound nucleus is
a. Unicellular
c. prokaryotic
b. Multicellular
d. eukaryotic
28. A eukaryotic cells ability to differentiate to become specialized cells helps tissues, organs, and
systems
a. grow large in size
c. work more efficiently
b. produce larger cells
d. stay healthy
29. Prokaryotes are different from eukaryotes because they contain
a. no nucleus and a flagellum
b. a nucleus and a flagellum
c. no nucleus and a cell wall
d. a nucleus and a flagellum
30. Proteins are made from amino acids in the smallest organelle, which is called a(n)
a. Mitochondria
c. ribosome
b. Lysosome
d. chloroplast
31. A network of protein in the cytoplasm of some cells, which defines the shape of animal cells, is
called the
a. Cell wall
c. Golgi complex
b. Cytoskeleton
d. nucleus
32. The plant organelle where photosynthesis occurs is a(n)
a. Mitochondria
c. ribosome
b. Lysosome
d. chloroplast
33. Digestive enzymes are released, that destroy worn-out organelles and get rid of waste materials from
the
a. Cytoskeleton
c. ribosome
b. Lysosome
d. Golgi complex
34. In prokaryotic cells, DNA is stored in the
a. cytoplasm
c. Golgi complex
b. cytoskeleton
d. nucleus
35. A group of organs with a specific job inside the body are called a(n)
a. Organism
c. cell
b. Organ
d. organ system
36. Maze like structure that contains ribosomes is called the
a. Rough endoplasmic reticulum
b. Smooth endoplasmic reticulum
c. Rough Golgi complex
d. Smooth Golgi complex
37. The nucleus is surrounded by
a. The cell membrane
c. The endoplasmic reticulum
b. The nuclear membrane
d. The Golgi complex
38. Which organelle is NOT found in the plant cell?
a. Cell wall
c. mitochondria
b. Lysosome
d. vacuole
39. Which organelle is NOT found in the animal cell?
a. Cell membrane
c. Golgi complex
b. Nucleus
d. chloroplast
40. The nucleolus contains
a. Ribosomes
c. nucleic acid
b. Chromosome
d. DNA
NAME:
III.
Period
Date
Short Answer (5 points each)
Write an answer to each of the following questions.
41 Describe the function of the nuclear membrane, chromatin, and nucleolus.
42. What is one advantage of having specialized cardiac muscle cells? What is one disadvantage?
43. In plant cells, what is the relationship between mitochondria and chloroplast?
44. Why did Hooke think that cells existed only in plants and fungi and not in animal cells? Explain his
discovery and observations.