MULTIPLE CHOICE:
Choose the correct answer for questions 1-6:
1. What is the most correct definition to the term differentiation?
a. When one cell is different from another.
b. The specialization of a cell to efficiently carry out one function/task.
c. Cell that lacks a membrane-delimited nucleus and other membrane-bound organelles.
d. The cellular substance outside the nucleus in which the cell's organelles are suspended.
2. Which of the following sequences correctly list from the smallest (least complex) to the largest (most complex)?
a. Cell → Tissue → Organ → Organ System → Organism
b. Cell → Organ → Tissue → Organ System → Organism
c. Cell → Tissue → Organ → Organism → Organ System
d. Organ → Organ System → Organism → Tissue → Cell
3. If a light microscope has a eye piece magnification of 10X and you are using a view lens of 25X, what is the magnification of the microscope?
a. 100X
b. 150X
c. 200X
d. 250X
e. 300X
4. Which of the following equations is correct for finding magnification?
a. magnification = size of image / size of specimen
b. magnification = size of image / weight of specimen
c. magnification = (size of lens * size of image) / size of specimen
d. magnification = size of specimen / size of image
5. A ___________ is a line added to a micrograph or a drawing to help show the actual size of structures.
a. Calculator
b. Transformer
c. Scale Bar
d. Magnifier
6. Which of the following statements is not true?
a. Viruses are cells
b. Prokaryotes are cells
c. Eukaryotes are cells
d. Organisms are made of cells
MATCHING:
Match each of the following terms with its correct definition for questions 7-12:
7. Cell wall
8. Plasma membrane (cell surface membrane)
9. Mesosome
10. Cytoplasm
11. Ribosome
12. Naked DNA
a. Contains enzymes that catalyze the chemical reactions of metabolism and DNA in a region called the nucleotide
b. Synthesize proteins by translating messenger RNA. Some proteins stay in the cell and others are secreted
c. Controls entry and exit of substances, pumping some of them in by active transport
d. Increases the area of a membrane for ATP production. May move the DNA to the poles during cell division
e. Forms a protective outer layer that prevents damage from outside
f. Stores the genetic information that controls the cell and is passed on to daughter cells
TRUE or FALSE:
Tell if a statement is true or false by selecting “a” for “true” – or “b” for “false” – for questions 13-21.
13. It is possible to view living organism with an electron microscope.
a. True
b. False
14. A cell the size and shape of a regulation basketball has been found living in a pond located in the Amazon. (HINT: Is it possible for a cell to maintain itself at this size and volume, are there limitations to cell size?)
a. True
b. False
15. The main component of a plant cell wall is cellulose.
a. True
b. False
16. Hydrophilic molecules are not attracted to water.
a. True
b. False
17. Membrane proteins can form channels for molecules to pass through.
a. True
b. False
18. Passive transport requires no energy.
a. True
b. False
19. Through endocytosis molecules are released from the cell.
a. True
b. False
20. In the mitosis phase, telophase, the cell splits and becomes two cells.
a. True
b. False
21. The excessive and uncontrollable formation of new cells through mitosis is known as cancer and can form tumors.
a. True
b. False
