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Energy & Matter in E
Study Island answers/help (Energy & Matter in Ecosystems)
| Question | Answer |
|---|---|
| During cellular respiration, energy is stored in the form of _______. | ATP |
| Which of the following are products in the process of aerobic respiration? | carbon dioxide and water |
| The diagram below shows a food web. Which of the following is true about the food web? | Squirrels provide foxes and owls with energy. |
| Carbon fixation is the process through which carbon dioxide is removed from the air and incorporated into a solid. ..Which of the following could be caused by a decrease in carbon fixation? | an increase in the total biomass of consumers in the world |
| What is the ultimate source of energy for all ecosystems? | the Sun |
| Photosynthesis occurs in two sets of reactions within the chloroplast - light reactions and dark reactions. ..What is the main purpose of photosynthetic light reactions? | to change light energy into the chemical energy of ATP and NADPH |
| Which substance is removed from the atmosphere so that plants can carry out photosynthesis? | carbon dioxide |
| During photosynthesis, plants capture light energy from the Sun to break weak bonds in reactants, such as carbon dioxide and water, and form carbon-containing molecules, such as glucose. The carbon-containing molecules can then be used | to assemble larger molecules, such as DNA, proteins, and fats. |
| The diagram above depicts the nitrogen cycle. According to the diagram, how is nitrogen returned to the soil from animals? | urine and decomposition following death |
| Plant and animal cells release energy stored in the bonds of glucose molecules when they perform | cellular respiration. |
| What happens to the chemical elements that make up the molecules of living things as they pass through a food web? | Some of their energy is stored in newly made structures. |
| During photosynthesis, plants take in light energy from the Sun, carbon dioxide from the air, and water through their roots. Which of the following is a product of photosynthesis? | glucose sugar, oxygen |
| The energy pyramid below shows a possible amount of energy, in kilocalories, available in the organisms at each trophic level in..If this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid? | Energy is lost between each trophic level as heat. |
| Based on the food chain shown above, energy in this ecosystem flows from | the mouse to the snake. |
| A diagram of an Australian grassland food web is shown below. The grasses and gum trees are__________. | producers |
| There are many ways in which energy can flow through an aquatic ecosystem. One way is as follows: phytoplankton zooplankton shrimp moray eel shark How is each trophic level of the biomass pyramid related to the adjacent trophic levels? | Each trophic level contains one-tenth as much biomass as the level below it and ten times as much biomass as the level above it. |
| The diagram below shows an energy pyramid. Which of the following best explains why the number of organisms at each level decreases while moving up the energy pyramid? | The animals at each level use energy, so only a small amount of their energy is available to the next level. |
| Which of the following living things would be found closest to the beginning of a food chain? | caterpillar |
| During the process of photosynthesis, plants use energy from the Sun to convert carbon dioxide and water into glucose and oxygen. When phosphate groups are removed and molecules of ADP are formed, energy is released. This energy can be used to perform | cellular work. |
Created by:
_thequeenofoblivion_
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