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Does 1kg of lettuce have more energy than 1kg of beef?

1kg of beef has more energy than 1kg of lettuce but it isn't directly related to the trophic level energy loss. Given that each level of the food chain has a decrease of 10% of available energy You'...
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38 votes

Does 1kg of lettuce have more energy than 1kg of beef?

The so-called '10% law' is a common, albeit very rudimentary, rule-of-thumb in foodweb analysis. It's commonly attributed to Raymond Lindeman, though he cited a wide range of ratios in natural systems....
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8 votes

Does 1kg of lettuce have more energy than 1kg of beef?

The (food) energy in 1kg of lettuce or 1kg of beef depends on each's composition, not on its trophic level. Normally we can digest fats, protein and carbohydrates, but other organisms like certain ...
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4 votes
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Is the pyruvate dehydrogenase reaction considered part of the Krebs Tricarboxylic Acid Cycle?

It is outside both the remit and competence of this site to divine the intentions of university teachers in questions that they set to students. What we can do is explain the scientific points that ...
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4 votes
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Besides fats, proteins, and carbs, what compounds can the body use for energy?

There are two significant energy sources for humans besides fats, carbohydrates, and protein listed in this USDA report that I found: Organic acids: these are compounds like citric acid and malic ...
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3 votes

Does 1kg of lettuce have more energy than 1kg of beef?

Note that the decrease in food energy from one trophic level to the next is 90%, not 10%, if only 10% of the energy is actually passed on to the next level. To compare 1 kg of lettuce with 1 kg of ...
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How does exercise cause weight loss if the corresponding chemical reactions have the same mass on the LHS and the RHS?

Excretion. You've really answered your question in your own comment, except that you don't seem to have realized that there is no "apart from sweat and bodily waste being expelled from the body&...
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1 vote

Does 1kg of lettuce have more energy than 1kg of beef?

only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next. "biomass in a trophic level is passed from one level to the next" is a lot of ...
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1 vote

Does 1kg of lettuce have more energy than 1kg of beef?

Just to complement @DKNguyen's excellent answer, think about this: if you were raising cows on lettuce, how many cows would you have and how much lettuce would you have? Obviously you could not have ...
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