Homework Answers
A is correct answer because ultimate source of energy is sun which it utilized by producers , cyanobacteria etc and pass this energy to other trophic levels.
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Most ecosystems get their energy from which source? a. Sun b. Deep sea vents c. Gasoline...
2.32 Volcanoes and deep sea hydrothermal vents are both associated with sulfur-rich environments. Mount Etna is...
2.32 Volcanoes and deep sea hydrothermal vents are both associated with sulfur-rich environments. Mount Etna is classed as a continuously degassing volcano and emissions of SO2 and H2S are around 1.5Tgy and 100Ggyi, respectively (Tg = 1012 g; Gg 10 g). (a) Draw Lewis structures for H2S and SO2, ensuring that the octet rule is obeyed by the S and O atoms. Your answer must be consistent with the fact that in SO2, the two sulfur-oxygen bonds are the same...
Of the following which is FALSE regarding decomposers in an ecosystem? A. They cycle energy into...
Of the following which is FALSE regarding decomposers in an ecosystem? A. They cycle energy into the system by converting molecules back into usable forms for other organisms in the ecosystem. B. They are critical to an ecosystem functioning; ecosystems require producers and decomposers at a minimum. C. They cycle nutrients in the form of usable biomass and productivity back into the ecosystem. D. They are critical to an ecosystem functioning because they convert unusable biomass back into a usable...
Water characterizes the most common and the most rare ecosystems worldwide. Why is it essential to...
Water characterizes the most common and the most rare ecosystems worldwide. Why is it essential to find ways to manage water resources for human populations? a) Humans utilize water from oceans, which is the most common ecosystem. b) Humans utilize freshwater, which is the rarest ecosystem. c) Humans utilize freshwater, which is the most common ecosystem. d) Humans utilize water from oceans, which is the rarest ecosystem.
Estimate the lifetime of sun whether your source was: a) Potential gravitational b)Energy of nuclear fusion...
Estimate the lifetime of sun whether your source was: a) Potential gravitational b)Energy of nuclear fusion of hidrogen and helium on PP cicle c)Calculate the minimal mass of a star with lifetime equal to universe's age, or 13.7 billions of years
Assume that most of the electromagnetic energy from the sun is in the visible region near...
Assume that most of the electromagnetic energy from the sun is in the visible region near 500 nm. Calculate the maximum value of the work function for a metal to be used in photovoltaic cells to convert solar energy into electricity Then identify which of the following metals could be used in such a capacity. The maximum value is: The following metals could be used in the photovoltaic cel described above (mark all that could be used):
5. The Galapagos Rift is between A. the Pacific Plate and the Cocos Plate B. Cocos...
5. The Galapagos Rift is between A. the Pacific Plate and the Cocos Plate B. Cocos Plate and the Nazca Plate C. the Cocos Plate and the South American Plate D. the South American Plate and the Caribbean Plate 6. Water temperature across most of the ocean floor is A. -6 degrees C B. 0 degrees C C. 4 degrees C D. 380 degrees C 7. Magma beneath oceanic ridges heats water to A. 100 degrees C B. 600 degrees...
answer 7) The substrate of an eye a) Allosterves to the b) Reactant c) Coenzyme d)...
answer
7) The substrate of an eye a) Allosterves to the b) Reactant c) Coenzyme d) Active site 8) Which of the following is FALSE regarding Gestrandorten a) When living "S" strain (encapsulated strain was (b) The "R" strain and "S" strain exchanged genes via segi c) After DNA from the heat killed "S"strain was mad with strain became pathogenic. d) When heat-killed "S" strain was injected into mice, the mic 9) Bacteria that live in deep sea hydrothermal vents...
Which of the following statements is FALSE? A. The addition of phosphorus to polluted coastal ecosystems...
Which of the following statements is FALSE? A. The addition of phosphorus to polluted coastal ecosystems often results in reduced growth of phytoplankton. B. Shallow marine waters have higher productivity partly because nutrients are easily transported from benthic habitats to surface waters. C. Productivity of marine ecosystems is primarily limited by nitrogen and iron but rarely by phosphorus. D. Rivers tend to have higher primary productivity rates than ponds and lakes. E. Shallow marine waters have higher productivity partly because...
Chemoorganotrophic heterotrophs oxidize carbohydrates as their primary source of energy. Glucose is the most common energy...
Chemoorganotrophic heterotrophs oxidize carbohydrates as their primary source of energy. Glucose is the most common energy source for such organisms and energy may be extracted from glucose via respiration or fermentation. a. Explain the difference between aerobic respiration, anaerobic respiration, and fermentation. b. Identify and briefly define the metabolic pathways involved in aerobic respiration. For each metabolic pathway your response should address the forms of carbon that enter and exit, the amount of ATP produced, and the number and types...
14. In chemiosmosis, what is the most direct source of energy that is used to make...
14. In chemiosmosis, what is the most direct source of energy that is used to make ATP? A) energy released as electrons flow through the electron transport chain B) energy released from substrate-level phosphorylation C) energy released from movement of protons through ATP synthase, down their electrochemical gradient D) energy released as electrons are transported across the inner mitochondrial membrane 15. Water is one of the end products of aerobic respiration. What is the source of the oxygen atom used...
2.32 Volcanoes and deep sea hydrothermal vents are both associated with sulfur-rich environments. Mount Etna is classed as a continuously degassing volcano and emissions of SO2 and H2S are around 1.5Tgy and 100Ggyi, respectively (Tg = 1012 g; Gg 10 g). (a) Draw Lewis structures for H2S and SO2, ensuring that the octet rule is obeyed by the S and O atoms. Your answer must be consistent with the fact that in SO2, the two sulfur-oxygen bonds are the same...
Assume that most of the electromagnetic energy from the sun is in the visible region near 500 nm. Calculate the maximum value of the work function for a metal to be used in photovoltaic cells to convert solar energy into electricity Then identify which of the following metals could be used in such a capacity. The maximum value is: The following metals could be used in the photovoltaic cel described above (mark all that could be used):
answer
7) The substrate of an eye a) Allosterves to the b) Reactant c) Coenzyme d) Active site 8) Which of the following is FALSE regarding Gestrandorten a) When living "S" strain (encapsulated strain was (b) The "R" strain and "S" strain exchanged genes via segi c) After DNA from the heat killed "S"strain was mad with strain became pathogenic. d) When heat-killed "S" strain was injected into mice, the mic 9) Bacteria that live in deep sea hydrothermal vents...
14. In chemiosmosis, what is the most direct source of energy that is used to make ATP? A) energy released as electrons flow through the electron transport chain B) energy released from substrate-level phosphorylation C) energy released from movement of protons through ATP synthase, down their electrochemical gradient D) energy released as electrons are transported across the inner mitochondrial membrane 15. Water is one of the end products of aerobic respiration. What is the source of the oxygen atom used...
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