Explain why most energy fails to be converted to a usableform when one organism eats another.

Provide an example of an activity that would rely primarily on fats (lipids) for energy and another activity that would rely primarily on carbohydrates.

INTERPRETING DATA Scientists estimate that only 10 percent of the energy present at each level of the food chain is available to the next level. Scientists also estimate that only 1 percent of the light energy from the sun that reaches photosynthetic organisms is converted to chemical energy during photosynthesis. Use this information and the two food chains below to answer the questions that follow. Food chain A Human vegetarians Food chain B Human meat eaters Cattle Read each question, and write your answer in the space provided 1. Assume that 1 million kilocalories (kcal) of energy from the sun is available to the autotrophs in the food chains above. Determine the amount of energy that will be available at every level of each food chain.

The main source of sugars that are consumed by organisms that carry out cellular respiration is: Animals Bacteria Fermentation Photosynthesis

Is any stored from of energy going to be converted and, if so to what?

Do larval mosquitos or adult mosquitos have more nutritional value in the context of a food chain? Why?

The biomass available for consumption by the herbivores and decomposers is called as what?

State the second law of thermodynamics and apply it to the energy transfer from a trophic level to the next higher trophic level in a food chain.

In a food web primary consumers get their energy by?

Describe the source of the energy stored in the meat and the bun of a hamburger, and explain how the energy got from the source to the two foodstuffs.