A grasshopper's body is made up of molecules and atoms, including glucose carbon, oxygen, and other chemical compounds. Figure 2: Partial Carbon Cycle shows some ways that carbon is cycled through the ecosystem
Image Description:
A grasshopper produces a molted exoskeleton, which decays into the air and a plant. Carbon dioxide is released into the atmosphere, which then makes plants take in carbon dioxide from atmosphere and causes decay.
Carbon atoms from glucose molecules that a grasshopper eats may become part of the grasshopper's protective covering, or exoskeleton, and then return to the ecosystem when the exoskeleton is shed. Figure 1: Cell Respiration Reaction shows the chemical reaction that takes place within the grasshopper's cells
Figure 1: Cell Respiration Reaction
6O2 + C6H12O6->6C02+ 6,H20+energy
Oxygen Glucose Carbon dioxide
A student makes a claim that an atom of carbon in a grasshopper's body could once have been an atom in the body of a prehistoric animal. Which evidence best supports this claim?
Figure 2 shows that grasshoppers molt their exoskeletons.
Figure 1 shows that carbon is present when energy is produced.
Figure 1 shows that carbon atoms are used in more than one type of molecule.
Figure 2 shows that carbon continually circulates through the ground, the atmosphere, and living things.
The evidence that best supports the claim that an atom of carbon in a grasshopper's body could once have been an atom in the body of a prehistoric animal is Figure 2, which shows that carbon continually circulates through the ground, the atmosphere, and living things. This suggests that atoms of carbon can be reused and recycled in different organisms over time.
Carbon atoms from glucose molecules that a grasshopper eats may become part of the grasshopper's protective covering, or exoskeleton, and then return to the ecosystem when the exoskeleton is shed. Figure 1: Cell Respiration Reaction shows the chemical reaction that takes place within the grasshopper's cells
Figure 1: Cell Respiration Reaction
6O2 + C6H12O6->6C02+ 6,H20+energy
Oxygen Glucose Carbon dioxide
Part A: The equation shows a reaction that occurs during the decomposition of a grasshopper's body. In which way does this process compare to the cell respiration process in Figure 1?
Both processes release extra oxygen into the atmosphere.
One process is the reverse of the other process.
Both processes result in the same types of molecules being produced.
One process produces larger molecules than the other process.
The correct answer is: One process is the reverse of the other process.
Part B
Which statements about both the decay and cell respiration processes are true?
Choose two correct answers.
Atoms are broken down to produce energy.
No atoms are lost during the chemical reaction.
New atoms are produced through chemical change.
Different types of atoms are needed for each new substance.
Atoms are rearranged to form different compounds.
The two correct statements about both the decay and cell respiration processes are:
1. Atoms are broken down to produce energy.
2. Atoms are rearranged to form different compounds.