When oxygen is scarce, pyruvic acid can accumulate and is converted to carbon dioxide and ethanol which causes formation of pyruvate to yield acetaldehyde
Answer:
Gradually released into the atmosphere by photosynthetic microbes, it formed two important gases new to fledgling Earth: breathable oxygen gas, or O2, and ozone, or O3. Together, the buildup of these gases enabled life to emerge onto land and evolve into the rich diversity of life-forms that inhabit Earth today.
A classification systemwhere entries are arranged based on some hierarchical structure. filesystem, filing system. asystem of classifying into files (usually arranged alphabetically) grouping, pigeonholing. a systemfor classifying things into groups.
Answer:
b
Explanation:
Chloroplast which is are only found in plant cells and algal. The chloroplast has a very high concentration of chlorophyll. The chloroplast is the cell organelle that produces energy by using photosynthesis.
The virus goes inside the cells nucleus and corrupt everything apart of it. The RNA in the virus gets forcefully put in the DNA lining so the virus can replicate millions of times. As that's happening, the nucleus takes action and replicates the virus then breaks down. Destroying the cell, the virus move on to its next cell.
