WorksheetsFinal Exam Review
Total questions: 24
Worksheet time: 12mins
Select ALL that are examples of biotechnology.
Identifying a broken bone using an x-ray
Identifying the father of a child by comparing DNA using DNA fingerprinting
CT Scan of the Brain
Looking at cells in the microscope
Analyzing DNA by gel electrophoresis allows researchers to conclude which of the following?
determine whether a particular allele of a gene is dominant or recessive
cut DNA with restriction enzymes
compare the phenotypes of different organisms
identify similarities and differences in the genomes of different kinds of organisms
Which of the following best describes what is occurring in Step 1 of Figure 1?
Step 1 involves the bacterial plasmid and the gene of interest being cut with different restriction enzymes.
Step 1 involves the inclusion (insertion) of the gene of interest within the bacterial plasmid.
Step 1 involves both the bacterial plasmid and the gene of interest being cut with the same restriction enzyme.
Step 1 involves the inclusion (insertion) of the bacterial plasmid with the gene of interest.
Select ALL the advantages of using GMO crops.
GMOs allow farmers to grow more crops on less land.
GMOs allow farmers to use less pesticide.
GMOs could lead to new food-borne allergies.
GMOs often have increased health benefits.
Which of the following is the BEST reason an individual who agrees with therapeutic cloning for the purposes of study and therapy might cite to support their argument.
Therapeutic cloning places an altered human cell in a woman’s uterus. In contrast, reproductive cloning takes place in a laboratory and cannot lead to a human being.
Therapeutic cloning holds great promise to alleviate human suffering and advance human knowledge.
The processes for therapeutic cloning and reproductive cloning both share a fundamental act of destroying a human embryo, a potential life.
The embryos used in therapeutic cloning research are babies with functional organs.
Why are RNA viruses such as HIV so hard to treat?
Changes in the viral genome (mutations) occur at a much higher frequency and therefore, viral adaptation occurs at a rapid rate.
Changes in the viral genome (mutations) occur at a much lower frequency and therefore, viral adaptation occurs at a slow rate.
Changes in the viral genome (mutations) occur at a much lower frequency and therefore, viral adaptation occurs at such a rapid rate.
Changes in the viral genome (mutations) occur at a much higher frequency and therefore, viral adaptation occurs at such a slow rate
According to Darwin, the process in which an organism is best suited for its environment is called
convergent evolution.
divergent evolution.
natural selection.
artificial selection.
What kinds of structures are reduced in size and seem to have no function, like your tail bone or wisdom teeth?
Homologous
Analogous
Petrified
Vestigial
In the picture to the right, all of the limbs show that they are made of the same types of bones and therefore the same types of cells. The bones are used to show that various organisms have related anatomy which suggests common ancestry. This critical piece of evidence provides support for evolution. The limbs to the right are_______ structures.
analogous
homologous
vestigial
identical
A population of green iguanas lived on a tropical island. Originally, most of the iguanas had feet without webbing between their toes and a long round tail. A few iguanas had webbed feet and a short, flat tail. As the years passed, the island became smaller and smaller because of flooding. Even the land areas were dotted with ponds and pools. The iguanas had a hard time finding the food they normally ate. To survive, the iguanas had to swim from island to island to find food.
How would you expect the iguanas to look hundreds of years after the island flooded and food became harder to find?
The iguanas would no longer be green
The iguanas will look the same but there will be less of them
There would be fewer iguanas with webbed feet
There would be more iguanas with webbed feet and flat tails
Genetic drift is
due to interbreeding with other species populations.
a random change in gene frequency in a population.
the effect of mutations as they spread through neighboring populations
a generational fluctuation in gene frequencies that produce no effect.
A variation in the gene pool of population of beetles existed in the original population before a small group migrated to a new habitat in search of food and shelter. Which of the following explanations correctly describes the resulting generations in their respective habitats?
Genetic variation amongst the beetles decreased because only a few individuals migrated to a new habitat.
Genetic variation amongst the beetles increased because only a few individuals migrated to a new habitat.
Genetic variation amongst the beetles increased because a population representative of the original population migrated to a new habitat.
Genetic variation amongst the beetles decreased because a population representative of the original population migrated to a new habitat.
If finches with large beaks and finches with small beaks increase in a population while finches with average sized beaks decrease, which pattern of natural selection has occurred?
stabilizing
directional
disruptive
genetic drift
Darwin’s Theory of Natural Selection states that there is a struggle to survive as organisms compete for resources and try to avoid predation. Over time, the organisms best adapted will survive and pass their traits onto offspring. Which of the following is the best explanation of the role mutations play in natural selection?
Mutations provide variation within a population and environmental pressures select for or against these adaptations
Mutations are always harmful and organisms with mutations will be selected against, leaving those that are best adapted to pass their traits on to offspring.
All mutations in somatic cells are passed on to offspring and over time as mutations are passed down through generations, populations will change.
Mutations that occur in gametes are always fatal to offspring which prevents new traits from entering into a gene pool.
Which of the following pieces of evidence does not support the theory of continental drift?
The presence of plates beneath the ocean floor on which continents have shifted due to the movement of these plates.
The presence of dramatically different human artifacts on different continents.
The presence of rocks of the same type that were present along the coasts of neighboring continents.
The presence of the same extinct animal fossil species on opposite neighboring continents.
Which of the following best explains the length of primary and secondary succession?
Primary succession does not take as long as secondary succession because primary succession begins with soil left after the disaster.
Primary succession takes longer than secondary succession because primary succession begins with no soil.
Primary and secondary succession take the same amount of time.
Secondary succession takes longer than primary succession because secondary succession begins with no soil left after the disaster.
Intraspecific competition is when_______________________.
two different species compete for resources
two of the same species compete for resources
both species benefit in the relationship
none of the above are correct
Secondary succession can begin with a forest fire. What is left behind after the fire?
nothing
soil
bare rock
a thriving ecosystem
The final end point of succession is called _________________.
staged community
climax community
community revitalization
community development
Plants such as the Venus Flytrap respond to stimuli such as touch. Which term refers to a plant’s response to touch?
gravitropism
thigmotropism
hydrotropism
phototropism
Plants will bend to grow toward the sun even when placed in a windowsill. Which term refers to a plant’s response to sunlight?
gravitropism
thigmotropism
hydrotropism
phototropism
In the pond ecosystem diagram shown below, which organism would be most affected by biomagnification?
Producers
1st level consumers
2nd level consumers
3rd level consumers
Otters are important to kelp forests along the northwestern coast of the United States because they feed on sea urchins and control their population. Sea urchins feed on the kelp, and if they overpopulate, they can wipe out whole kelp forests. This is because the kelp can no longer anchor itself and simply float away. In this way, otters not only regulate the sea urchin population, but they also influence the kelp forest. Which statement best describes the role of the otter?
The otter is an invasive species because they move into a new area and compete with native species, therefore harming the balance of the ecosystem.
The otter is a keystone species because they move into a new area and compete with native species, therefore harming the balance of the ecosystem.
The otter is an invasive species because if they are removed from the ecosystem, the food web and ecosystem can collapse.
The otter is a keystone species because if they are removed from the ecosystem, the food web and ecosystem can collapse
which biome has the greatest amount of biodiversity?
boreal forest
Tropical Rainforest
Temperate Forest
Dessert
