The Elements of Life In biology, the elements of life are the essential building blocks that make up living things. They are carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. The first four of these are the most important, as they are used to construct the molecules that are necessary to make up living cells. These elements form the basic building blocks of the major macromolecules of life, including carbohydrates, lipids, nucleic acids and proteins. Carbon is an important element for all living organisms, as it is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Even the cell membranes are made of proteins. Carbon is also used to construct the energy-rich molecules adenosine triphosphate (ATP) and guanosine triphosphate (GTP). Hydrogen is used to construct the molecules water and organic compounds with carbon. Hydrogen is also used to construct ATP and GTP. Nitrogen is used to construct the basic building blocks of life, such as amino acids, nucleic acids, and proteins. It is also used to construct ATP and GTP. Oxygen is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. It is also used to construct ATP and GTP. Phosphorus is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Show The Elements of Life In biology, the elements of life are the essential building blocks that make up living things. They are carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. The first four of these are the most important, as they are used to construct the molecules that are necessary to make up living cells. These elements form the basic building blocks of the major macromolecules of life, including carbohydrates, lipids, nucleic acids and proteins. Carbon is an important element for all living organisms, as it is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Even the cell membranes are made of proteins. Carbon is also used to construct the energy-rich molecules adenosine triphosphate (ATP) and guanosine triphosphate (GTP). Hydrogen is used to construct the molecules water and organic compounds with carbon. Hydrogen is also used to construct ATP and GTP. Nitrogen is used to construct the basic building blocks of life, such as amino acids, nucleic acids, and proteins. It is also used to construct ATP and GTP. Oxygen is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. It is also used to construct ATP and GTP. Phosphorus is used to construct the basic building blocks of life, such as carbohydrates, lipids, and nucleic acids. Upgrade to remove ads Only ₩37,125/year
Terms in this set (75)If you are registered to take a course called "The Ethics of Human Population Growth," which department at your school will likely be offering the course? Environmental Studiies Which of the following best describes the industrial revolution? an urban society with increased access to goods and fossil fuel use In a controlled experiment, if a researcher wants to examine the effect of feeding a high-calorie diet on an animal's weight, which one would be the independent variable? the high-calorie diet Which of the following is a nonrenewable resource? fossil fuels The main advantage of observational studies and natural experiments over manipulative studies is that natural experiments ___________. are able to test hypotheses in the field and with large study areas. Which statement is an INCORRECT description of peer review? Peer review is used rarely and only when researchers are at the beginning of their careers. Which statement describes or follows from the concept of sustainability? An example of sustainable use is that water extracted from underground resources must be equal to or less than the water that recharges the underground resources. What would be an outcome of a paradigm shift in science? Many fields of science would have to rethink their understanding of the world. What was the paradigm shift in how we view Easter Island? Evidence suggests that Easter Islanders did not devastate their environment, but instead suffered after foreigners arrived on the island. Of the following, which can be depleted if overused? Water Based on our general understanding of resource use in wealthy versus poor nations, if the people of a poor country deplete renewable resources at a rate 10% faster than the earth can replenish them, which percentage of overshoot might represent the United States? 40% If a scientist travels to the rain forest to observe and catalog new species, he or she would be conducting ___________. descriptive science The following statement is an example of a(n) __________: "People in Japan eat more fish on average than people of other countries." observation Which of the following would be most likely to be believed by the scientific community? an experiment that has been replicated 10 times with the same results A __________ is widely accepted, and has been extensively validated by a great amount of research. theory Which of the following is a scientific theory? "All organisms are composed of similar units of organization called cells." Which of the following is an example of a "wicked problem"? global warming When scientists determined that the earth was round rather than flat, this was a ___________. paradigm shift If a scientist makes an observation and eventually carries out an experiment to explain that observation, he or she is conducting ___________. hypothesis-driven science What is Earth's natural capital? It is the accumulation of Earth's wealth of resources. Which of the following is NOT something a proponent of campus sustainability would support? constructing a conventional science building that houses large laboratories and offices Are U.S. students who graduated in 2008 more environmentally literate compared to students who graduated in 2001? Students who graduated in 2008 are less environmentally literate Which of the following best describes the elements of our environment? all the living things and nonliving things in the environment around us How did the agricultural revolution lead to an increase in human population numbers? The shift from a nomadic lifestyle to settling down on farms with domesticated animals allowed for nutritional needs to be met more easily. Along with population growth, which of the following is a major root of the environmental problems caused by humans? our exploitation and consumption of resources When wolves were eliminated from Yellowstone National Park in 1926, the elk population exploded and biodiversity along streams declined dramatically as the elks consumed all of the riverside vegetation. When wolves were reintroduced the biodiversity of these riverside, communities increased dramatically. What kind of species is the wolf in the Yellowstone community? keystone Which of the following statements best describes competition for a niche?.. Two species could divide a niche through "resource partitioning." Which list includes biomes in the correct order based on those that have the lowest annual rainfall to those that have the highest? A) desert, grassland, temperate deciduous forest, tropical rain forest Which statement is an accurate description of a keystone species? A keystone species that is a predator controls the herbivore populations, which in turn maintains the plant populations and keeps balance. Using "+" for those that benefit, "−" for those that are harmed, and "0" for no effect, which of the following expressions best represents competition between species? − / − Which biome is correctly matched with its description? A temperate grassland biome has a hot, dry summer and fall, has few to no trees, and contains large grazing animals like bison. Which statement is correct concerning the process of ecological succession? After a disturbance, the community goes through a somewhat predictable set of changes until reaching a final state. Many wild orchids cannot be successfully dug up and transplanted because they need the native mychorrhizae (a fungus) in the soil to survive. What kind of interaction is this? mutualism Which of the following biomes has soil with the fewest nutrients and least organic matter? a tropical rain forest If you wanted to predict which biome you would find in an area, what two things would you would need to know about that area? its annual rainfall and temperature If you wanted to represent the relative importance of the trophic levels in a food chain, the most accurate way to do so would be a graph in the form of __________. a pyramid of energy Pick the answer that best evaluates the following statement: "It has been said that land animals can't exist without plants but that plants could exist without animals." This statement is true because plants are able to convert sun energy into food energy and animals must get their energy from plants or other organisms that eat plants. When a species is moved from its native area to a new area, it can become an invasive species and damage its new ecosystem. What is one reason these species are able to do damage to an ecosystem? When a species is transported, it leaves behind its predators and the diseases that previously kept its population in check. Therefore the species is able to grow to large and damaging numbers. How does predation differ from parasitism? Parasites rarely kill their host while predators kill their prey When looking at the distribution of the world's biomes, there is a predictable pattern that results when starting at the equator and moving north or south (a longitudinal change). Where else do we see the same sort of predictable pattern? starting at the base of a mountain and climbing up to the top Ecological restoration tries to _____. return ecosystems to a more "natural" state, often what they were like before industrial civilization altered them What kind of interaction occurs when two cardinals (birds of the same species) are trying to build a nest in the same tree? intraspecific competition When a parasite lives inside the human gastrointestinal tract, absorbing some of the human's nutrients at the human's expense, it is considered a(n) _____ interaction. exploitative A marine ecosystem is
exposed to a potentially devastating invasive species and responds by remaining stable throughout the invasion. It could be said that _____. the ecosystem demonstrated resistance to the disturbance If a human consumes both plant and animal products then he or she is considered a(n) _____. omnivore Which of the following would have the largest biomass in a terrestrial ecosystem? autotrophs While driving through an area in October you notice that most of the trees are full of beautiful autumn-colored leaves. When you return to the area again in December you notice that the trees have lost their leaves and are bare. Which of the following ecosystems might this be? a temperature deciduous forest Which of the following is the best strategy for protecting natural systems from degradation? Protect all natural ecosystems to the best of our ability before damage starts to occur and by acting in a sustainable way. The type of biome that has been converted most frequently by humans for agricultural use is the _____. temperate grassland Many plants devolved complicated defenses to protect themselves against ________. Herbivory The only process that can change a gene's DNA and therefore give rise to new genetic variations in a species is __________. a mutation Which of the following is considered a community? several interacting species living in the same Which statement most accurately represents the process that produced such dog breeds from the wild-type (feral) dog? Humans noticed dogs with large, floppy ears and a great sense of smell and wanted more like them. They then bred them with similar dogs over many generations. What expression is used to determine the overall growth rate of a population? (crude birth rate - crude death rate) + (immigration rate - emigration rate) Which statement below most accurately describes a phylogenetic tree? A phylogenetic tree is a branching diagram used to illustrate a scientist's hypothesis about how divergence took place among evolutionary lines. The sixth mass extinction event is likely being caused by __________. human-induced events The innate reproductive capacity of a species is its _____. biotic potential The carrying capacity is _______. the maximum population size that a given environment can sustain Density-dependent factors _______. have a greater impact at higher population densities. Which of the following is a typical K-selected species' adaptation? parental care of the young Starting with the smallest level of ecological organization and moving towards the highest, the order should go organism, _________. population, community, ecosystem, biosphere Which of the following would protect Earth's biodiversity? All of the listed responses are correct Which of the following populations would be most vulnerable to extinction? a small, endemic population Which of these best matches with a type III survivorship curve? an organism that produces huge numbers of offspring, most of which die quickly, with the few survivors not dying until old age When looking at the distribution of a population, we might find a uniform distribution when _______. individuals are competing for an evenly distributed resource such as space Bats and birds are unrelated animals, yet they both evolved wings. By acquiring similar traits (i.e., wings) as they adapted to similar environments, these species exhibit __________? convergent evolution Two organisms live in the same geographical area, are very similar genetically, and can breed with each other successfully. Which of the following statements is correct? These organisms are members of the same species If a scientist spends his time studying communities and the nonliving materials that they interact with, he or she would be called a(n) _______. ecosystem ecologist If we are not concerned about the effect of migration on population growth, the measure we would calculate is the _______. natural rate of population growth Consider a population of fish in the ocean. Which of the following would be a limiting factor for such a population? dissolved oxygen levels An insect species is an agricultural pest. It is small, extremely mobile, and reproduces rapidly. Which of the following statements is true about such a species? The insect species is r-selected. Why are island species particularly vulnerable to introduced species? Island species evolved in isolation and lack defenses against introduced species. Which of the following is a major reason that Hawaii has been able to prevent some species from going extinct? People are protecting public and private land. Which of the following would explain the extinction of upwards of 90% of species in existence over a short period of time? mass extinction events Assuming a population grows by a fixed percentage each year, which of the following starting populations would experience the biggest increase in its population from one year to the next? 2,000 individuals Students also viewedBiology25 terms drew49910 The Cycles of Matter16 terms HilarySmann13Plus Humans and the Environment Unit Test 88%25 terms lilymay91 Bio semester 1 unit tests121 terms MatteoACoscia Sets found in the same folderIB Environmental Systems and Societies145 terms Michael_Marek IB Environmental Systems and Societies T…124 terms VDandridgeTeacher Other sets by this creatorHUM 115 // CHAPTER 616 terms geraldine_zapata Truth claims13 terms geraldine_zapata HUM 115 Final Exam - Ch. 526 terms geraldine_zapata Critical thinking chapter 1,2,355 terms geraldine_zapata Verified questions
engineering What is the ratio of the dynamic viscosity of air to that of water at standard pressure and a temperature of 20$^{\circ}C$? What is the ratio of the kinematic viscosity of air to that of water for the same conditions? Verified answer
engineering For the beam and loading shown in Figure P10.21, integrate the load distribution to determine (a) the equation of the elastic curve for the beam. (b) the maximum deflection for the beam. Assume that $E I$ is constant for the beam. Verified answer chemistry What is a hypothesis? Verified answer
engineering If the frequency of the input voltage is changed to $2.5\text{MHz}$ in Fig. 31–15, what is the frequency of the output waveform? Verified answer Recommended textbook solutions Environmental Science for AP3rd EditionAndrew Friedland, Rick Relyea 957 solutions Environmental Science for AP2nd EditionAndrew Friedland, Rick Relyea 965 solutions Principles of Environmental Engineering and Science4th EditionMackenzie L. Davis, Susan J. Masten 429 solutions
Principles of Environmental Engineering and Science4th EditionMackenzie L. Davis, Susan J. Masten 429 solutions Other Quizlet setsecology multiple choice59 terms manderz67 Enviro top hat questions34 terms zharris22 research of social work exam 4 bloomsburg yoon25 terms julia_james45 Psychology chapter 130 terms mverdon176 What best describes a keystone species?A keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.
What is the best definition of a keystone species quizlet?A keystone species is a species that has a disproportionately large effect on its environment compared to its relative abundance. This differs from a foundation species because a foundation species is just usually a primary producer that dominates an ecosystem in abundance and influence.
Which of the following is a keystone species?Examples of keystone species include starfish, sea otters, wolves and elephants.
Which statement is true with regard to keystone species?Which statement is true with regard to keystone species? Keystone species can control the distribution of other species in an ecosystem.
|
Select the correct answer. which statement best describes a keystone species?
zusammenhängende Posts
Urheberrechte © © 2024 de.ketajaman Inc.
