Download Practice Exam for learning objectives 1-21

Practice Exam for Unit II
1. The DNA that codes for proteins that regulate the activity of structural genes is contained in a(n):
a. operon
b. regulatory gene
c. inducer
d. intron
2. An inducible operon is turned _______ unless a(n) _______ binds to the _______.
a. on, inducer, repressor
b. on, repressor, inducer
c. off, inducer, repressor
d. off repressor, inducer
3. Introns
a. are non coding sequences of DNA
c. must be removed before protein synthesis
b. can be repetitive sequences
d. all of the above
4. Oncogenes are different from normal cells because they
a. have contact inhibition b. use growth factors
c. have an extra gene
d. none of the above
5. If you wanted to separate DNA pieces by size you would
a. use electrophoresis
b. need a plasmid
c. need a vector
d. run a polymerase chain reaction (PCR)
6. Restriction enzymes
a. cut DNA at the same specific sequence every time b. can have sticky ends or blunt ends
c. are used for cloning
d. all of the above
7. The human genome project relied on
a. cloning
b. restriction fragment length polymorphism
c. chromosome walking
d. all of the above
8. Plants are green because chlorophyll
a. absorb green light
c. reflect green light
b. absorb red, orange, and blue light
d. b and c
9. Chloroplast components include
a. double membrane, matrix, thylakoid
c. double membrane, stroma, grana
b. single membrane, thylaokoid, grana
d. none of the above
10. Light reactions occur in the ______ and dark reactions occur in the ______.
a. thylakoid membrane, stroma
b. matrix, thylakoid membrane
c. stroma, intermembranse space
d. thylakoid membrane, grana
11. Non-cyclic photophosphorylation makes
a. ADP and FADH2
b. ATP and FADH2
c. ADP and NADPH
12. Unlike non cyclic photophosphorylation, cyclic photophosphorylation makes only
a. NADPH
b. ATP
c. FADH2
d. ADP
13. Cyclic photohosphorylation occurs when there is no
a. NADP
b. NADPH
c. ATP
d. ADP
14. The most important fact about the dark reactions is that they produce
a. NADPH
b. ATP
c. G3P
d. Rubisco
15. Rubisco
a. is responsible for carbon fixation in most plants
c. is the first enzyme used on the light reactions
b. transfers its CO2 to PEPCO in C4 plants
d. all of the above
16. In the Calvin Cycle ______ are recycled and ________ are used each time
a. 6 G3P, 3 CO2 b. 3 RuBP, 3 G3P
c. 3 Rubisco, 3FADH2
d. 3 RuBP, 3 CO2
d. ATP and NADPH
17. C4 plants use ____ to capture CO2 from the air unlike C3 plants that use ______.
a. Rubisco, PEPCO
b. PEPCO, Rubisco
c. RuBP, G3P
d. G3P, RuBP
18. The advantage of using PEPCO is that it
a. produces the most ATP
b. is not inhibited by CO2
c. is not inhibited by O2
d. a and b
19. A good example of a C4 plant is
a. corn
b. soybeans
c. cactus d. an oak tree
20. CAM plants
a. use PEPCO to capture O2
c. open their stomata at night to prevent CO2 loss
b. open their stomata at night to prevent H2O loss
d. prevent photorespiration
21. A good example of a CAM plant is
a. corn
b. soybeans
c. cactus d. an oak tree
22. Photorespiration
a. helps plants by capturing O2
c. hurts plants by capturing CO2
b. helps plants by capturing CO2
d. hurts plants by capturing O 2
23, Photorespiration occurs in _______ plants.
a. C3
b. C4
CAM
d. all plants
24. Photorespiration occurs because of the enzyme
a. RuBPb. G3P c. PEPCO
d. Rubisco
25. Photorespiration occurs in ________ plants and is the reason ________ plants are more efficient.
a. C3, C4
b. C4, C3
c. C3, C3
d. C4, C4
26. Which of the following is not a characteristic of an angiosperm
a. flower
b. fruits
c. cones
d. 275, 000 plants species
27. All of the following are characteristics of monocots except
a. parallel venation
b. tap root system
c. vascular bundles complexly arranged
of 3
28. Root systems serve to
a. provide anchorage
c. absorb water and minerals
d. floral parts in multiples
b. can be used for food storage
d. all of the above
For 29-31 match the root type with the root function
29. Fibrous roots
a. often modified for food storage
30. Tap roots
b. gives plant extra support in form of prop root
31. Adventitious roots
c. anchor the top of the soil
32. When a terminal bud is removed
a. the plant stops growing b. the plant dies
c. the axillary buds grow d. a leaf grows in its place
33. A horizontal stem that grows underground is called a
a. rhizome
b. tuber c. bulb
d. all of the above
34. All of the following are parts of a leaf except
a. blade b. petiole
c. sepal d. all of the above are parts of a leaf
35. A compound leaf
a. has more than one function
b. consists of divided leaflets
c. is in an atypical spot on the plant
d. consists of leaflets
36. Root hairs are an extension of
a. dermal tissue cells
b. vascular tissue cells
c. ground tissue cells
d. root hairs are not extensions of a cell; they are cells
37. Tracheids and vessel elements are both cells found in
a. xylem tissue b. phloem tissue c. ground tissue d. protoplast tissue
38. In ________ tracheids are specialized into two cell types
a. angiosperms b. fungi c. gymnosperms d. all of the above
39. Sieve-tube member cells have no_______ and therefore need companion cells
a. mitochondria b. chloroplasts c. Endoplasmic reticulum
d. nucleus
40. Ground tissue cells include
a. parenchyma cells
b. collenchyma cells
c. sclerenchyma cells d. all of the above
41. In ________ the vascular bundles are arranged in a ring and the _________ is on the inside of the ring.
a. dicots, pith
b. dicots, cortex c. monocots, pith
d. monocots, cortex
42. Collenchyma are
a. typical plant cells
b. specialized for support c. are found in growing tissues
d. all of the above
43. The primary cell wall is
a. developed in all plants b. is between the membrane and secondary cell wall (when one is present)
c. is held to other primary cells wall by the lamella
d. a and c
44. Because trees have the quality of indeterminate growth
a. they grow all the way to maturity
b. they never stop growing
c. any of their cells can become a needed cell
d. any of their cells can become a needed cell up until maturity
45. Meristematic tissue
a. is at the tips of shoots and roots
b. . has cells that are undifferentiated
c. none of the above
d. all of the above
46. Biennials
a. produce flowers and seeds twice a year b. grow in one year and produce flowers/seeds the second year
live for many years
d. live for just one year
47. Apical meristems provide _________ and lateral meristems provide ____________.
a. primary growth, secondary growth
b. secondary growth, primary growth
c. growth in angiosperms
only, growth in gymnosperms only d. growth in gymnosperms only, growth in angiosperms only
48. Which of the following are root zones dedicated to growth
a. zone of elongation
b. zone of maturation
c. zone of cell division
d. all of the above
49. The protoderm is a root tissue that functions in
a. production of root xylem tissue
b. production of root xylem tissue
c. epidermal production
d. sugar production
50. The casparian strip
a. produces new vascular tissue
c. produces epidermal tissue
b. keeps unwanted molecules out of the vascular tissue
d. forms a waxy coating on the leaves to keep water in
51. Mycorrhizae have a symbiotic relationship with the ______ of plants to help _________
a. roots, water and mineral absorbtion
b. leaves, capture energy from sunlight
b. phloem tissue, transport sugars
c. root meristems, grow stronger roots
52. Vascular bundles in the stems of dicots form a ring around the perimeter with the xylem towards the
a. pith
b. cortex
c. roots d. leaves
c.
53. Every year of growth in a plant documented by rings of _____ tissue with the oldest ring on the ____.
a. phloem, outside
b. phloem, inside c. xylem, outside d. xylem, inside
54. Which of the following is considered tissue making up wood
a. the phloem tissue
b. the cork tissue c. the xylem tissue
55. The cells in the leaf that contain chlorophyll are
a. mesophyll cells
b. epidermal cells
56. Phloem tissue transports
a. sugar up
b. sugar down
d. b and c
c. guard cells
c. sugar up and down
57. Water tension in plant cells gives them a
a. flaccid appearance
b. turgid appearance
d. all of the above
d. water and mineral up and down
c. evolutionary advantage d. none of the above
58. ___________ flow allows water and minerals flow directly into the xylem vessels
a. symplastic and apoplastic
b. a symplastic c. apoplastic
d. casparian
59. Transpiration is caused by
a. pumping of water and minerals into roots
c. mycorrhizae taking water from the plant
b. water evaporating out of stomata
d. guttation
60. Phloem transport is driven by
a. root pressure b. osmotic pressure flow c. all of the above
61. Megaspores
a. make pollen grains
b. make microspores
62. A dioecious flower
a. has only a staminate or a carpellate
d. none of the above
c. are produced by the ovule
b. is imperfect
c. is unisexual
d. are diploid cells
d. all of the above
63. During __________ nutrients are mobilized from storage in seeds
a. germination b. dormancy
c. reproduction d. none of the above
1. B
8. D
15. A
22. D
29. C
36. A
43. D
50. B
57. B
2. C
9. C
16. D
23. A
30. A
37. A
44. B
51. A
58. B
3. D
10. A
17. B
24. D
31. B
38.C
45. D
52. A
59. B
4. D
11. D
18. C
25. A
32.C
39. D
46. B
53. D
60. B
5. A
12. B
19. A
26. C
33. A
40. D
47. A
54. C
61. C
6. D
13. A
20. B
27.B
34. C
41. A
48. D
55. A
62. D
7. C
14. C
21. C
28. D
35. D
42. C
49. C
56. C