Manaus, city and river port, capital of Amazonas estado (state), northwestern Brazil.
Answer:
b. chloroplast
Explanation:
Chloroplasts are the double membrane-bound organelles that serve as the site for photosynthesis in eukaryotes. Chloroplasts are the organelles where eukaryotic autotrophs synthesize the organic nutrients by the process of photosynthesis. According to the given information, the first eukaryotic cells were heterotrophs as they derived energy by available organic compounds. They did not synthesize the organic nutrients to use them as fuel. Chloroplasts are not present in heterotrophic organisms such as animals. Therefore, chloroplasts are most likely to have appeared last in the eukaryotic cells.
The answer is A because they are parts of algae
Here is the complete question
When an individual is exercising heavily and when the muscle becomes oxygen-deprived, muscle cells convert pyruvate to lactate. What happens to the lactate in skeletal muscle cells?
A. It is converted to NAD+.
B. It produces CO2 and water.
C. It is taken to the liver and converted back to pyruvate.
D. It reduces FADH2 to FAD+.
E. It is converted to alcohol.
Answer
C. It is taken to the liver and converted back to pyruvate
