Answer:
Chloroplasts are the food producers of the cell. They are only found in plant cells and some protists. Animal cells do not have chloroplasts. Every green plant you see is working to convert the energy of the sun into sugars. Plants are the basis of all life on Earth. They create sugars, and the byproduct of that process is the oxygen that we breathe. That process happens in the chloroplast. Mitochondria work in the opposite direction and break down the sugars and nutrients that the cell receives.
Explanation:
Answer:
Energy transferred during a chemical reaction. ... In an exothermic reaction, the potential energy of the system goes down, and heat is given out. In an endothermic reaction, the potential energy of the system goes up, and heat is taken in.
Explanation:
Answer: A single strand
Explaination:RNA and DNA are macromolecules made up of nucleotides organised in chains. DNA has double strands organised in a helical shape.
Answer:
performing a controled experiment
Explanation:
this is because they can experience it themselcves, without having risk of external disturbance that would change tha outcome