Directions: Use the information provided and your knowledge of Life Science to answer the following questions. Show all work where necessary.
Directions: Use the information provided and your knowledge of Life Science to answer the following questions. Show all work where necessary.
Before seeds grow into plants, they rely on the food reserves stored inside them. When the seed begins to germinate, enzymes break down stored starches and sugars into smaller molecules. These molecules enter the mitochondria of the seed’s cells, where cellular respiration takes place.
During cellular respiration, glucose combines with oxygen to release energy that supports cell division, root growth, and other life processes.
The chemical equation is:
C6H12O6 + 6O2 --> 6CO2 + 6H2O + Energy ( ATP + Heat)
Because some of this energy is released as heat, germinating seeds in a closed container can become noticeably warmer than non-germinating seeds or inactive controls.
This experiment shows that energy is released when chemical bonds in food molecules are broken and rearranged - the same process that occurs in human and animal cells.
Graph of Information - Figure 1.
Figure 2.
Which observation best supports that germinating seeds are undergoing cellular respiration?
Compare the temperature change between dry seeds and germinating seeds. What does this difference indicate about the processes occurring inside the seeds?
Explain why germinating seeds release heat even though they are not exposed to sunlight.
Which condition would MOST LIKELY decrease heat production in germinating seeds?
Using the table and Figure 1, describe the pattern in heat release as seeds move from dry to early germination to full germination.
Does the data support the claim that germination increases the rate of cellular respiration?
Claim:
Evidence:
Reasoning: