BSC 1005 FINAL

question

What name is given to a gene that causes cancer?
answer

oncogene
question

The study of the full protein sets that genomes encode is _____.
answer

proteomics
question

Which of the following is the best definition for recombinant DNA? DNA that includes pieces from two different sources an alternate form of DNA that is the product of a mutation DNA that results from bacterial conjugation DNA that carries a translocation
answer

DNA that includes pieces from two different sources
question

Cutting DNA with a particular restriction enzyme produces DNA fragments that can be separated by ______.
answer

gel electrophoresis
question

How is it that the cells in different body tissues are able to perform different functions?
answer

The cells exhibit different patterns of gene expression.
question

How can a single RNA transcript be translated into different polypeptides?
answer

There is more than one way to splice an RNA transcript
question

Ethical dilemmas raised by DNA technology and knowledge of the human genome include ______.
answer

all of the above
question

Which of these is most likely to cause the development of a six-legged frog? mutation of homeotic genes artificial selection conversion of a proto-oncogene to an oncogene dietary supplementation
answer

mutation of homeotic genes
question

What would you assume if you found RNA transcripts of lactose-utilizing genes within E. coli?
answer

the presence of lactose
question

Data suggest that the normal version of BRCA1 functions as a(n) ______.
answer

tumor-suppressor gene
question

Which of these plays a role in the regulation of transcription in both prokaryotic and eukaryotic cells? RNA splicing transcription factors gene operons attachment of RNA polymerase to the promoter
answer

attachment of RNA polymerase to the promoter
question

When plasmids are used to produce a desired protein, the ______.
answer

desired gene is inserted into the plasmid and the plasmid is taken up by the bacterium
question

Cells communicate with one another via ______.
answer

signal transduction pathways
question

What is the first level of control of eukaryotic gene transcription?
answer

DNA packing and unpacking
question

HIV (human immunodeficiency virus) must use its own ______ to reproduce.
answer

reverse transcriptase
question

In eukaryotic cells, repressor proteins inhibit transcription by binding to ______.
answer

silencers
question

STR analysis is a DNA profiling technique that makes use of the fact that different people have
answer

different numbers of repeats of short DNA sequences at certain sites in the genome.
question

Which of the following best defines the term transgenic organism?
answer

an organism containing a gene from another species
question

In human gene therapy,
answer

normal versions of genes are transferred to patients who carry a mutated allele
question

Inheritance of certain genes increases the risk of getting certain cancers; thus, it can be said that ______.
answer

predisposition to these cancers is inherited
question

Introns are ______.
answer

noncoding DNA sequences
question

In an operon, the ______ acts as an on/off switch.
answer

operator
question

Gel electrophoresis separates DNA fragments on the basis of differences in their ______.
answer

length
question

Which of these techniques could tell you how gene expression differs between individuals with and without cystic fibrosis?
answer

DNA microarray
question

The scientific field that studies complete sets of genes is called ______.
answer

genomics
question

In bacteria, what name is given to a cluster of genes with related functions, along with their DNA control sequences?
answer

operon
question

In The Origin of Species, Darwin argued that the mechanism of descent with modification was _____.
answer

natural selection
question

The founder effect differs from a population bottleneck in that the founder effect ______.
answer

involves the isolation of a small colony of individuals from a larger population
question

Which of the following is a component of the fossil record?
answer

bones of extinct whales
question

The original source of genetic variation that serves as the raw material for natural selection is ______.
answer

mutation
question

The smallest biological unit that can evolve is the ______.
answer

population
question

During his trip on the Beagle, Darwin found that ______.
answer

plants and animals living on a continent seemed more closely related to each other than to plants and animals living in similar regions on other continents
question

What does evolutionary fitness measure?
answer

relative reproductive success
question

Homology is evidence of ______.
answer

common ancestry
question

Which of the following is a population?
answer

the termites infesting your house
question

The total collection of alleles in a population at any one time make up that population’s ______.
answer

gene pool
question

Genetic drift is the result of ______.
answer

chance
question

Which of the following is most likely to decrease genetic variation?
answer

stabilizing selection
question

Natural selection results in ______.
answer

a population that is adapted to its current environment
question

Natural selection can be defined as ______.
answer

a process in which organisms with certain inherited traits are more likely to survive and reproduce than individuals with other traits
question

Which one of the following can create new alleles?
answer

mutation
question

Which of the following are homologous?
answer

the forelimb of a dog and the forelimb of a cat
question

Which of the following is not a requirement of natural selection?
answer

catastrophic events
question

Of the following taxonomic levels, species found within the same ______ are the most closely related.
answer

family
question

How do New World monkeys differ from Old World monkeys?
answer

New World monkeys have a prehensile tail.
question

A period of mass extinction is often followed by ______.
answer

explosive diversification
question

What type of reproductive isolating mechanism is described by a situation in which female fireflies only mate with males who emit light in a particular pattern?
answer

behavioral isolation
question

Which of the following taxonomic levels is most inclusive?
answer

class
question

What distinguishes animals from other eukaryotes?
answer

They ingest food.
question

Unique features of vertebrates include the presence of a(n) ______.
answer

skull and backbone
question

Which one of the following is the only domain that contains eukaryotes?
answer

Eukarya
question

Which anthropoids are most closely related to humans?
answer

chimpanzees
question

The common ancestor of all animals is likely to have been a(n) ______.
answer

colonial, flagellated protist
question

The wing of a penguin is ______ the wing of a butterfly
answer

analogous to
question

The wing of a bald eagle is ______ the wing of a penguin.
answer

homologous to
question

Which of the following is a binomial? Rhizosolenia sapiens diatom Nitzschia jouseae
answer

Nitzschia jouseae
question

Where did humans first appear?
answer

Africa
question

Under the biological species concept, what criterion is used to assign populations of organisms to the same biological species?
answer

being able to interbreed and produce fertile offspring
question

Which of these human characteristics evolved first? language loss of body hair erect posture enlarged brain
answer

erect posture
question

A reproductive barrier that prevents species from mating is an example of ______.
answer

a prezygotic barrier
question

The current geological era is the ______.
answer

Cenozoic
question

The science of naming, identifying, and classifying organisms is called ______.
answer

taxonomy
question

Analogous structures are evidence of ______.
answer

convergent evolution
question

Features unique to mammals include ______.
answer

the presence of hair
question

When two frog species, Rana pipiens and Rana sylvatica, mate, the offspring die early in embryonic development. This is an example of ______.
answer

reduced hybrid viability
question

If you study how two species of finches compete for food, you are trying to answer a question about _______.
answer

community ecology
question

The greenhouse effect causes an increase in global temperatures. This increase is primarily due to ______.
answer

CO2 and other greenhouse gases slowing the escape of heat from Earth
question

Which of the following can moderate climate by absorbing heat when the air is warm and releasing heat when the air is cold? glaciers oceans mountains clouds
answer

oceans
question

Which of the following is not a result of global warming? changes in the breeding seasons of some species. shifts in the ranges of some species melting permafrost. decreasing sea levels.
answer

decreasing sea levels.
question

Temperature increases due to global warming have been greatest _____.
answer

close to the poles
question

Which of the following is abiotic? a plant a fungus a rock a protist
answer

a rock
question

Which of these biomes is one of the most biologically productive of all biomes? open oceans temperate grasslands estuaries coniferous forests
answer

estuaries
question

What level of ecology is concerned with groups of individuals of the same species?
answer

population
question

Long, snowy winters as well as evergreen trees such as pine and fir are found in ______.
answer

coniferous forest
question

What level of ecology is concerned with groups of individuals of different species?
answer

community
question

Permafrost, or permanently frozen subsoil, characterizes _____.
answer

tundra
question

In what part of the ocean are phytoplankton found?
answer

pelagic realm
question

Which of the following is a behavioral response to environmental variability?
answer

migrating to a different location
question

Which of the following organisms are not ultimately dependent on sunlight for energy? predators bacteria that feed on dead organic matter species that live in hydrothermal vent habitats marine species that live in the aphotic zone
answer

species that live in hydrothermal vent habitats
question

In an aquatic ecosystem, what name is given to the region where photosynthesis can occur?
answer

photic zone
question

Water-storing plants and deeply-rooted shrubs are plants that characterize ______.
answer

deserts
question

What term applies to the physical and physiological changes experienced by astronauts who spend months in space?
answer

acclimation
question

What level of ecology is concerned with the adaptations of individuals?
answer

organismal
question

What are estuaries?
answer

a transition area between a river and the ocean
question

Ecology is the study of ______.
answer

interactions between organisms and their environments
question

The effect of deforestation has been to ______.
answer

increase the amount of carbon dioxide in the atmosphere
question

The temperate zones ______.
answer

are relatively wet
question

Which nutrients often limit the distribution and abundance of photosynthetic organisms?
answer

nitrogen and phosphorus

Get instant access to
all materials

Become a Member