Characid fishes only found naturally only in South America and Africa. Fossils of these fish are not found on any other continents. What is the most likely explanation of this distribution pattern?
Characid fishes arose prior to the separation of the African and South American continents.
Insects, such as the grasshopper shown below, have ______.
a three-part body: head, thorax, and abdomen
DNA is found in structures called ______.
Which of the following lack vascular tissue?
What is biology?
the scientific study of life
An atom with an electrical charge is a(n) ______.
Which of the following would be an example of paedomorphosis?
the ability to reproduce evolving in caterpillars
Cutting DNA with a particular restriction enzyme produces DNA fragments that can be separated by ______.
Many proto-oncogenes regulate ______.
Which of the following elements, essential to life, is a trace element?
What did Darwin find in South America that suggested that the Andes mountains had been gradually lifted up over millions of years?
sea snail fossils high up in the Andes mountains
Which of these would be a valid hypothesis?
Humans and bacteria share a common genetic code.
Chromatin consists of ______.
DNA and protein
The expressed (coding) regions of eukaryotic genes are called ______.
What is the key to the recognition of codominance?
The heterozygote expresses the phenotype of both homozygotes
The feature present in reptiles and absent in amphibians that freed reptiles from dependence on water for reproduction is ______.
the amniotic egg
After replication, ______.
each new DNA double helix consists of one old strand and one new strand
What is the primary source of energy for nearly all of Earth's ecosystems?
Which of these is a community?
all of the organisms living in your home
Which of the following is abiotic?
When goats were introduced to an island off the California coast, the goats lived in the same areas and ate the same plants as the native deer. The deer population dwindled and finally disappeared. This is an example of _____. Choose one answer.
What will be the approximate shape of the age-structure diagram of a rapidly increasing population?
Which of these factors operates in a density-dependent manner?
If a population's growth rate decreases as the population size approaches carrying capacity, the population's growth follows a(n) ______ model.
______ is the maximum population size that a particular habitat can support.
Throughout most of human history, human population size _____.
grew very slowly
The number of individuals of a population per unit area is the ______.
Herring gulls fiercely defend the areas around their nests in cliff-top breeding colonies. Within the colony they would show a _____ dispersion pattern.
Which of these best describes Type III survivorship?
very high death rate very early in life followed by a decline in death rate
Which of these best describes Type I survivorship?
low death rate early in life, high death rate late in life
An unexpected freeze that kills a population of chipmunks is an example of ______
a density-independent factor
In most developed countries, overall population growth rates ______.
are near zero, so the population size is fairly stable
As a result of a disturbance, a community will ______
In order to assess the species diversity of a community, you would need to know the number of different species present as well as ______.
the relative abundance of the different species
In the global carbon cycle, carbon flows from animals to plants in the form of _____.
Advanced theory of Natural Selection, debated Wilberforce
Species are fixed, pro-slavery
Came up with the idea of natural selection independent of Darwin
Proposed the idea of tree-like evolution
Captain of the Beagle
Helped get Darwin on the Beagle
Wrote "Principles of Geology"
Was born on the same day as Abraham Lincoln
Medical Doctor, wrote how all organisms belong to one living filament
Individuals strive to change during their life in order to better adapt to their surroundings and these changes are passed on.
What happens to energy as it moves through the levels of a food chain?
Only about 10% is passed on to the next level
Which of the following statements best represents what was taught in class, which is consistent with the scientific consensus, concerning Global Warming.
It is "very likely" that an average increase in global temperature over the last 50 years is due in part to increased CO2 levels in the atmosphere.
Was an intelligent agent was involved in the creation of this world?
No, science can NOT address the question
Are some structures on organisms so complex that they cannot be explained by evolution?
Yes, science can address the question
Should there be a database of DNA fingerprints?
No, science can NOT address the question
Mark all of the following that ARE evolutionary adaptations leading to the modern human lineage. (You will need to mark all that apply)
-A knee more centered along the midline of the body -bipedalism -smaller cheek teeth -less robust jaw -Less spacing between canines and adjacent teeth
In class, I discussed that the fisherman of Colcholgue (the small fishing village where my Mother-in-Law is from) _____________ .
have noticed a decrease in the fish populations due to overexploitation 100%
What plays an important role in the function of a protein?
Darwin proposed the theory of natural selection as the mechanism of evolution . Which of the following would have been ideas/observations that support the theory of Natural Selection. Choose all that apply.
-The environment drives the direction of evolutionary change -Genetic variation, which leads to phenotypic variation is present in all populations. -Variation in individuals appears to be inherited.