Download Unit Exam on Cells

Unit II Test:
The Cell
Directions: Place the answer to the following questions on the scantron sheet. Do Not
write on the test paper.
Use the following to answer questions 1-4
a). active transport b). diffusion c). osmosis d). passive transport
1. Movement of particles from higher to lower concentration
2. Requires energy to move particles
3. Diffusion of water through a semipermeable membrane
4. No external energy needed to move particles
Use the following information to answer the next 2 questions
A blood cell is placed in 10% salt solution. Its interior is composed of 3% salt.
5. The blood cell would probably a). lyse b). crenate c). Retain its normal shape d). Lose
its salt content
6. The concentration of water in this example is a). greater inside the cell than outside b).
Greater in the immediate environment than in the cell c). Equal inside and outside the cell
d). Not important to the size of the cell
Answer questions 7-11 using the diagrams below:
7. This structure is responsible for energy production within the cell. a). 5 b). 1 c). 13 d).
4
8. This structure contains three layers of protein and lipid material a). 7 b). 15 c). 6 d). 14
9. Contains large amounts of cellulose a). 20 b). 15 c). 14 d). 13
10. Contains microtubules and microfilaments a). 17 b). 6 c). 7 d). 19
11. Contains all the codes for protein production in a cell. a). 10 b). 12 c). 13 d). 8
True or False (If false, explain why it is false.)
12. The chromosomes of prokaryotes are found in the nucleus
_____________________________________
13. A cell contains: a nucleus, mitochondria, cell wall and cytoplasm. It is a prokaryotic
animal cell ___________________________________
14. The nucleolus is the cell structure that produces ribosomes. __________________________________________
15. Structures that carry the hereditary information form one cell generation to another
during cell division are called chromosomes _______________________________
16. Each daughter cell receives a complete set of genes when centromeres separate during
anaphase _______________________________________________________
17. The chromosomes number in human skin cells number: a). 23 b). 46 c). 44 d). both a
and b are correct
18. The stage in mitosis when the chromosomes line up along the middle is a). interphase
b). prophase c). metaphase d). anaphase e). telophase
19. The main purpose of mitosis is to get daughter cells that a). are identical to the parent
cell b). have half the number of chromosomes as the parent cell c). get genetic diversity
d). are able to adapt
20. Most of the ATP molecules derived from nutrient metabolism are produced by:
a). anaerobic fermentation b). electron transport c). glycolysis d). Kreb's cycle and
electron transport chain
21. Cytokinesis follows ________ in the cell cycle. : a). anaphase b). interphase c).
metaphase d). telophase
22. In the electron transport chain, the final electron acceptor is a). oxygen b). water c).
NADH d). the mitochondrion
23. The reactants in the process of photosynthesis are: a). NADH and ATP b). carbon
dioxide and water c). Sugar and oxygen d). Chlorophyll and sunlight
24. The complete breakdown of one molecule of glucose will produce __molecules of
ATP ? a). 2 b). 16 c).24 d). 36
25. The main function of the S-phase of the cell cycle is to produce : a). cell parts b).
centromeres c). DNA d). spindle fibers
26. The light reaction of photosynthesis takes place in the : a). cytoplasm b). thylakoids
c). stroma d). outer membrane of the chloroplast
27. The Calvin cycle takes place in the : a). cytoplasm b). thylakoids c). stroma d). outer
membrane of the chloroplast
28. Glycolysis occurs in what part of the cell? a). nucleus b). mitochondrion c). plasma
membrane d). cytoplasm
29. During mitosis, the chromosome is attached to the spindle fiber by means of the
a). centrosome b). centriole c). centromere d). kinetochore e). chromatid
30. Which process takes place during the S phase of the cell cycle?
a). spindle formation b). DNA replication c). formation of chromatids d). replication of
centromeres
31. The "rungs" of the twisted ladder of DNA are made of a). sugar b). phosphate c).
sugar and phosphate d). bases
32. RNA differs from DNA in that a). uracil is replaced by thymine in RNA b). RNA is
double stranded c). the sugar in RNA is ribose rather than deoxyribose d). bases separate
prior to replication
33 . If a protein has 100 amino acids, how many RNA codons would be required for
translation to occur? a). 100 b). 33 c). 300 d). 500
Use the following to answer questions 34-37
a).Uracil b). Nucleotide c).Ribosome d).Thymine e). Adenine
34. Three part unit of phosphate, deoxyribose ,and a base.
35. Site of protein formation
36. Replaces thymine in RNA production
37. Nitrogen base that pairs with thymine
Use the following to answer questions 38- 41
a). Deoxyribose b). Ribose c). Phosphate d). Guanine
38. Base which combines with cytosine
39. compound connecting sugars in DNA and RNA molecules
40. Sugar in DNA molecule
41. Sugar in RNA molecule
42. Examples of this are DNA and RNA a). carbohydrates b). lipids c). nucleic acid d).
proteins
Essay Question
Directions: Read the following section. Line graph the data, answer the questions, and
write a lab report discussing the data.
Protein production is one of the main functions of a living cell. The amount of protein is
related to the amount of raw materials made available to the cell. Along with these
materials external conditions also play an important role in creating protein. The data
below was collected from an experiment trying to relate cellular protein production and
environmental pH. Examine the data and produce a line graph. Answer the questions that
follow and write a lab report defining your conclusion.
pH of the
solution
Specimen 1. Amount of Protein
produced per cell in mg/day
Specimen 2. Amount of Protein
produced per cell in mg/day
5.0
10
40
5.5
34
35
6.0
50
24
6.5
40
24
7.5
35
10
8.0
16
5
1. Graph Title: __________________________________________________________
2. What is the independent variable in this experiment?
___________________________.
3. What would be a good hypothesis for this experiment ?_________________________.
4. What is the average pH of the experiment? _______________.
5. What is the mean amount of protein produced by Specimen 1? _______________.
6. What is the mode found in Specimen 2? _________________.
7. Based on the above data, what type of environment would best suit the optimum
development of each of the two specimens?
_______________________________________________________________________
_______________________________________________________________________
8. Write a lab report analyzing the data. Include all the facts collected ( see graph ) to
back up your conclusions.
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_______________________________________________________________________
_____________________________________________________________________
Answers
1. b
2. a
3. c
4. d
5. b). crenate
6. a). greater inside the cell than outside
7. a). 5
8. d). 14
9. b). 15
10. b). 6
11. a). 10
12. False, cytoplasm
13. False, Eukaryotic plant cell
14. True nucleolus
15. True chromosomes
16. False, paired chromosomes
17. b). 46
18. c). metaphase
19. a). are identical to the parent cell
20. d). Kreb's cycle and electron transport chain
21. d). telophase
22. a). oxygen
23. b). carbon dioxide and water
24. d). 36
25. c). DNA
26. b). thylakoids
27. c). stroma
28. d). cytoplasm
29. c). centromere
30.b). DNA replication
31.d). bases
32. c). the sugar in RNA is ribose rather than deoxyribose
33 . a). 100
34. b
35. c
36. a
37. e
38. d
39. c
40. a
41. b
42. c). nucleic acid
1. Graph Title: ____Protein Production vs pH___________________
_
2. What is the independent variable in this experiment? ___pH__________.
3. What would be a good hypothesis for this experiment ?__Protein production varies
with pH.________.
4. What is the average pH of the experiment? __6.416_____.
5. What is the mean amount of protein produced by Specimen 1? __30.8______.
6. What is the mode found in Specimen 2? ___23________.
7. Based on the above data, what type of environment would best suit the optimum
development of each of the two specimens? _____specimen1 slightly acidic______
____speciman 2 more acidic than specimen 1_________