Analyze the provided energy-flow diagram. Calculate energy in A, energy lost in B, name energy in C, and state two aims of calculating feed energy value.

Biology
Analyze the provided energy-flow diagram. Calculate energy in A, energy lost in B, name energy in C, and state two aims of calculating feed energy value.

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Answer

850~kJ

2.5.1
The energy in C is the net energy (energy available for production and maintenance after heat production).

Net energy

2.5.2
The function represented by D is production.

Production

2.5.3

a) Energy in A

Step 1: Gross energy = 1000 kJ1000~\mathrm{kJ}
Feces energy lost = 150 kJ150~\mathrm{kJ}

Step 2: Substitute into formula for energy after feces loss:

1000 kJ−150 kJ=850 kJ1000~kJ - 150~kJ = 850~kJ

Energy in A = 850 kJ850~\mathrm{kJ}

850 kJ\boxed{850~kJ}

b) Energy lost in B

Step 1: Metabolic energy = 800 kJ800~\mathrm{kJ}
Energy to C = 500 kJ500~\mathrm{kJ}

Step 2: Substitute into formula for heat production:

800 kJ−500 kJ=300 kJ800~kJ - 500~kJ = 300~kJ

Energy lost in B = 300 kJ300~\mathrm{kJ}

300 kJ\boxed{300~kJ}

2.5.4
Two aims of calculating the energy value of a feed:

  1. To evaluate and compare the nutritive value of different feeds.
  2. To formulate balanced and economical rations for animals.
(2) Formulate balanced rations for animals}$$
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2.5.1 The energy in C is the net energy (energy available for production and maintenance after heat production).

Analyze the provided energy-flow diagram. Calculate energy in A, energy lost in B, name energy in C, and state two aims of calculating feed energy value.
Biology

This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.

ScanSolve AI Answer
2.5.1 The energy in C is the net energy (energy available for production and maintenance after heat production). Net energy 2.5.2 The function represented by D is production. Production 2.5.3 a) Energy in A Step 1: Gross energy = 1000~kJ Feces energy lost = 150~kJ Step 2: Substitute into formula for energy after feces loss: 1000~kJ - 150~kJ = 850~kJ Energy in A = 850~kJ 850~kJ b) Energy lost in B Step 1: Metabolic energy = 800~kJ Energy to C = 500~kJ Step 2: Substitute into formula for heat production: 800~kJ - 500~kJ = 300~kJ Energy lost in B = 300~kJ 300~kJ 2.5.4 Two aims of calculating the energy value of a feed: 1. To evaluate and compare the nutritive value of different feeds. 2. To formulate balanced and economical rations for animals. (1) Evaluate/compare nutritive value of feeds (2) Formulate balanced rations for animals