Answer:
Explanation:
Staining is done for onion cells to visualize the cytoplasm of yellow and white onions because they are not pigmented. The staining of human cheek cells with methylene blue is necessary to stain the nucleus to get clear image of it under microscope because methylene blue binds to negative charge nucleic acids
While for leaf epidermal cells smears, staining is not necessary as they are visible under light microscope without staining and they also have pigmented materials inside them such as chlorophyll chloroplast. The cork cell is a non-living and have a cell wall whose structure is visible under light microscope.
According to the law of conservation of energy, energy is not lost, although kinetic energy can be converted into thermal energy by friction. hope i helped <3
1. b - plants make their own food (glucose)
2. 1 - fish and upwards have a jaw (there are fish that do not have jaws, but this is likely where the divergence happens - before 1 is likely jawless fish.
3. b - cellular respiration
4. They belong to the same kingdom (Animalia) but different phyla (dogs are in the phylum Chordata - insects are not)
Is the 1st step in asking ecological questions
