Algae in an aquatic food chain convert solar energy into 93, 000 kilocalories of plant tissue. Which of the following values best represents the amount of energy available for secondary consumers in the food chain? A 930 kilocalories B 9, 300 kilocalories 93, 000 kilocalories 930, 000 kilocalories
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- Discuss the differences between GE (Gross energy), ME (Metabolizable energy), and DE (Digestible Energy). Among the three values, which one is the most accurate estimate of energy value of a feedstuff and why?Old People e = 100 calories λ = 10 per night h = 2 hours Middle Aged People e = 400 calories λ = 20 per night h = 5 hours Young Adults e = 300 calories λ = 10 per night h = 2.5 hours Suppose that the organism need 1000 calories per night. - Which food item should the organism prefer, and which ones would you expect them to eat on a regular basis? Explain why and show calculations. - Explain marginal value theorem, and how it might relate to an organisms foraging decisions. - λ for Old People should increase in the coming years. How could that affect this organisms feeding on humans?It takes about 0.5 kg of meat to support a human for one day. Assuming that beef is the only available nutrient, how much meat energy (kilograms of meat) will it take to get you to 20 years old? 10. How much plant energy (kilograms of plant) will it take to feed the beef that gets you to 20 years old?
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- A bird eats sunflower seeds from a bird feeder on a snowy day. Of the 1000 J of energy that was in the consumed seeds, the bird stored 10 J of energy in its body, eliminated 150 J of energy in its waste, and used the remaining energy to respire. What is the production efficiency of this bird? Useful equation: PE = Pn/An x 100Choose 1 of the biochemical nutrients. Discuss how it enters the ecosystem, leaves the ecosystem, and describe how human activity is taking the cycle out of balance.Question 2 What key nutrients might be essential for an effective "nutritional supplement beverage"? Edit View Insert Format Tools Table 12pt Paragraph v |BIU A ev T'v ...
- Nutrients (such as N, P. K) are important for the increase in net primary production which will be used by the consumers for growth and reproduction. In an aquaculture pond, why is it disadvantageous to exceed the saturation levels of fish feed (proteins, lipids, carbohydrates, vitamins) for the growth of aquaculture fishes. What are effects of this activity in the aquatic environment and organisms. Discuss in light of the lecture made earlier about productivity and nutrient cycling?A batch bioreactor at 37°C is used to perform a bioprocess. Assume you are using as nutrient source a complex mixture of sugars that requires an enzyme to be broken to glucose and other monomers. (i) Sketch and discuss the evolution of the biomass concentration as a function of time. (ii) Sketch and discuss the evolution of the product concentration (antibiotic) as a function of time. (iii) Discuss how the productivity will be altered if the reactor temperature was increased to (i) 45°C and (ii) 67°C.Select the ultimate source of energy for nearly every organism on this planet. Select one: A. Plants B. Primary producers C. Heat D. Sugars E. The sun