Answer:
mitochondria, ribosomes, and vacuoles
Explanation:
chloroplasts and cell walls are only found in plants .
though rare, vacuoles are found in animal cells as well as plants .
mitochondria and ribosomes are in both types of cells .
Answer:
Viruses are not living things.
Answer: No.
Explanation:
Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply.
Answer:
Explanation:
In a lake, oxygenic phototrophs produce new organic material as well as O₂. If primary production rates are very high, the resultant excessive organic matter production can lead to bottom-water O₂ depletion from respiration and the development of anoxic conditions. This in turn stimulates anaerobic metabolisms, including anaerobic respirations and fermentations.
Organic matter that is not consumed in surface layers sinks to the depths and is decomposed by anaerobes.
A. Break down sugars to use their energy directly
