3.1
1. The improvements in the microscope help scientists see the cells better and distinguish the different organelles inside the cell.
2. Prokaryotic cells do not have a nucleus and most internal structures that eukaryotic cells.
3. This method builds on the work of early scientists by changing the soup broth with bacteria in it to a preserved petri dish.
4. Both cells and atoms are basic building blocks.
5. This poison would not kill bacteria because bacteria do not have a nucleus.
3.2
1. The cytoskeleton provides support for the cell and helps the organelles in the cell move.
2. The nucleus is protected by a double membrane which has pores that provide a pathway to the cytoplasm.
3. The mitochondrion provides energy to the cell using its stored energy.
4. The cell wall provides support for the cell and keeps unwanted pathogens outside of the cell.
5. Mitochondria and chloroplast both provide energy for the cell. …show more content…
Transport proteins that are pumps are active transport while those that are channels are passive transport.
2. Endocytosis and exocytosis transport larger things while diffusion only works if the thing is small. They require energy input; diffusion does not. They also enable larger particles to enter a cell, particles that are too large to diffuse across a cell membrane.
3. This action is osmosis. This does not require energy. Diffusion; no
4. This is active transport. It requires energy.
5. Cells would use too much energy just for transporting molecules. This might cause the organism/animal to spend most of its time taking in energy by eating. Cells would require vast amounts of energy to perform even simple functions. Perhaps organisms would have to take in more food to provide more energy. If food were limited, perhaps only photosynthetic organisms would be able to survive. Perhaps organisms would move and respond more slowly and be more sedentary. Perhaps organisms would be simpler, and highly specialized organs would not have
1. The improvements in the microscope help scientists see the cells better and distinguish the different organelles inside the cell.
2. Prokaryotic cells do not have a nucleus and most internal structures that eukaryotic cells.
3. This method builds on the work of early scientists by changing the soup broth with bacteria in it to a preserved petri dish.
4. Both cells and atoms are basic building blocks.
5. This poison would not kill bacteria because bacteria do not have a nucleus.
3.2
1. The cytoskeleton provides support for the cell and helps the organelles in the cell move.
2. The nucleus is protected by a double membrane which has pores that provide a pathway to the cytoplasm.
3. The mitochondrion provides energy to the cell using its stored energy.
4. The cell wall provides support for the cell and keeps unwanted pathogens outside of the cell.
5. Mitochondria and chloroplast both provide energy for the cell. …show more content…
Transport proteins that are pumps are active transport while those that are channels are passive transport.
2. Endocytosis and exocytosis transport larger things while diffusion only works if the thing is small. They require energy input; diffusion does not. They also enable larger particles to enter a cell, particles that are too large to diffuse across a cell membrane.
3. This action is osmosis. This does not require energy. Diffusion; no
4. This is active transport. It requires energy.
5. Cells would use too much energy just for transporting molecules. This might cause the organism/animal to spend most of its time taking in energy by eating. Cells would require vast amounts of energy to perform even simple functions. Perhaps organisms would have to take in more food to provide more energy. If food were limited, perhaps only photosynthetic organisms would be able to survive. Perhaps organisms would move and respond more slowly and be more sedentary. Perhaps organisms would be simpler, and highly specialized organs would not have