Answer:
organelles are very similar to present-day bacteria, suggesting a common ancestor.
Explanation:
Some evidence suggests that some organelles like mitochondria and chloroplasts within eukaryotes were once used to be independent eukaryotes.
Endosymbiosis theory says that ancestral prokaryotic cells engulfed bacteria like cyanobacteria which with time evolved into mitochondria and chloroplast. Molecular evidence also proves that these organelles were once prokaryotic organisms because they show similar genetic makeup and ribosome type.
So these organelles are similar to present-day bacteria showing that they have a common ancestor.
Answer: you need to divide mass by volume, the honey will sink to the very bottom and the corn oil will float to the top
Explanation:
The best answer is c) trust me
Answer:
The students with the purple shirts are moving through the gym doors most often.
Explanation:
- The students with the purple shirts represent potassium ions
- Potassium ions move freely across the membrane by passive transport and are important in maintaining membrane potentials
- The movement of sodium ions is through active transport therefore this is a process that requires energy (ATP) and thus these ions are less likely to move across the membrane often