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Biology, 6/e
Author Dr. George B. Johnson, Washington University
Author Dr. Peter H. Raven, Missouri Botanical Gardens & Washington University
Contributor Dr. Susan Singer, Carleton College
Contributor Dr. Jonathan Losos, Washington University

Plant Genomics

Multiple Choice Quiz

Please answer all questions



1

The bread wheat, Triticum aestivum, that is commonly used all over the world, is
A)hexaploid
B)tetraploid
C)triploid
D)diploid
2

The difference between a simple tandem array and a compound tandem array is
A)the frequency of different sequences
B)the direction the sequences face (left or right)
C)the number of different sequences involved
D)the number of repetitions of sequences
3

In the creation of a microarray (biochip), fragments of DNA are placed on a
A)microscope slide
B)circuit board
C)silicone chip
D)membrane
4

Proteomics is the study of
A)all proteins in an organism
B)gene-transcribing proteins
C)structural proteins of a cell
D)regulating proteins in humans
5

Increased genetic diversity following extended time in a tissue culture is a problem called
A)gene alteration
B)temporal modification
C)somaclonal variation
D)culture shock
6

A mass of dividing, undifferentiated cells in a tissue culture is called
A)a shield
B)a callus
C)an embryoid
D)an aggregate
E)a plasmodium
7

Approximately _______________ % of the world's production of fats and oils comes from plants.
A)15
B)25
C)45
D)75
E)95
8

Electroporation is a technique used with
A)calluses
B)pollen
C)protoplasts
D)organs
E)cell suspensions
9

To produce plants that are homozygous for all traits, the best choice is
A)cell suspension culture
B)callus culture
C)anther / pollen culture
D)plant organ culture
E)protoplast culture
10

Chloroplast DNA is
A)separate from nuclear DNA
B)coded by the nucleus
C)paternally inherited
D)a subset of nuclear DNA
E)transformed nuclear DNA
11

Cell suspension cultures require
A)organogenesis
B)b. electroporation
C)differentiation
D)aggregation
E)disaggregation
12

The function of "high-copy-number DNA" is
A)encoding most genes
B)encoding rRNA
C)encoding a single gene
D)encoding tRNA
E)unknown
13

Genetic engineering has modified _______________ for the creation of mono-unsaturated fatty acids.
A)PCR denaturase
B)QTL polymerase
C)LCP lipase
D)QLR esterase
E)ACP desaturase
14

Genetic engineering has succeeded in modifying canola oil to replace
A)yogurt
B)coconut oil
C)palm oil
D)cocoa butter
E)margarine
15

Most crops grown in the United States yield less than _______________ % of their genetic potential.
A)10
B)20
C)50
D)60
E)70
16

If you want to use a plant tissue culture as a chemical factory for vitamins, choose
A)suspension cultures
B)callus cultures
C)organ cultures
D)anther pollen cultures
E)protoplast cultures
17

The function of "low-copy-number DNA" is
A)encoding most genes
B)encoding rRNA
C)encoding a single gene
D)encoding tRNA
E)unknown
18

The fastest way to a ripe tomato using tissue culture is by
A)anther / pollen culture
B)plant organ culture
C)protoplast culture
D)callus culture
E)cell suspension culture
19

A characteristic feature of the chloroplast genome is the presence of
A)two simple tandem arrays
B)two repeat / repeat interspersions
C)two identical inverted repeats
D)two compound tandem arrays
E)two repeat / single-copy interspersions
20

Tools to detect polymorphism in plants are _______________ maps.
A)RFLP and QTL
B)AFLP and PCR
C)PCR and QTL
D)RFLP and AFLP
E)AFLP and QTL
21

A plant useful in the study of plant genomes because of its small genome size is
A)Avena sativa
B)Petunia porodii
C)Tulipa spp.
D)Arabidopsis thaliana
E)Pisum sativum
22

Sequencing efforts are underway for _______________ as a model for a small monocot genome.
A)rice
B)corn
C)barley
D)wheat
E)soy beans
23

Most plant tissue cultures are initiated from
A)calluses
B)explants
C)plantlets
D)protoplasts
E)anthers
24

Pores in protoplasts may be opened to DNA by the application of
A)magnetism
B)light
C)enzymes
D)ultrasound
E)electricity
25

A large inversion of chloroplast DNA is found in the _______________ family.
A)castor bean
B)sunflower
C)oats
D)Arabidopsis
E)pea
26

The function of "medium -copy -number DNA" is
A)encoding most genes
B)encoding rRNA
C)encoding a single gene
D)encoding tRNA
E)unknown
27

The high-copy-number-DNA in plants
A)codes for rRNA
B)codes for proteins required for plant metabolism
C)are called transposable elements
D)have no known function
E)function as enhancers and promoters
28

Which of the following are mismatched?
A)simple tandem array-repetitive sequence in the same orientation
B)compound tandem array-repetitive sequence in the same orientation
C)inverted repeats-repetitive sequence in the opposite orientation
D)single-copy gene-sequence is not repeated
E)all are correctly matched
29

The DNA in chloroplasts
A)is less complex and less diverse than the nuclear DNA in plants
B)has many prokaryotic features
C)is not subject to modifications caused by transposable elements
D)is used to trace evolutionary patterns in plants
E)all of the above
30

The genome sequencing of rice is important because
A)the rice genome is very unique and contains genes not found in other plants
B)the rice genome is very large compared to the DNA of other grains and so more genes will be identified
C)it can identify genes associated with disease resistance, growth capacity, etc.
D)it has a rapid life cycle and has many identifiable mutations
E)all of the above
31

Unlike the somatic cells of animals, plant cells can be grown in tissue culture and regenerate new plants
A)because each cell contains the entire genome
B)because plant cells can dedifferentiate and revert back to seeds
C)because plant cells are able to express genes that weren't previously expressed
D)both a and b
E)both b and c
32

Which of the following are mismatched?
A)cell suspension culture-somatic cell embryogenesis
B)protoplast isolation-hybrids
C)homozygous plants-anther/pollen culture
D)callus culture-differentiated tissues regenerate
E)all are correctly matched
33

Plant transformation is
A)when a plant grown in culture generates increased genetic variation
B)when plant cells in suspension cultures form individual embryos that can grow into plants
C)the incorporation of foreign DNA into the plant genome
D)when dedifferentiated callus cells develop into tissue that is different from the original source tissue
E)none of the above
34

The world currently farms an area about the size of South America and the food production from this area is expected to sustain the growing population.
A)True
B)False
35

The genetic engineering of crop plants can make them healthier and more beneficial to humans.
A)True
B)False
36

Plant genomes are more complex than other eukaryotic cells at the DNA level but not necessarily at the chromosome level.
A)True
B)False
37

The evolutionary history of wheat shows how one species can affect the emergence of new species.
A)True
B)False