Answer:
Without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration. ...
Explanation:
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A. in the past few decades the carbon dioxide levels have been rising
Answer: the contractile vacuole
Explanation: The contractile vacuole is a star-like structure located toward the cell's posterior. This organelle aids the cell in the removal of excess water. Without it, the euglena would be able to absorb so much water through osmosis that the cell would burst.
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Answer: ASAP The transcription of the information in DNA involves the pairing of the nitrogen bases of DNA with RNA nucleotides to form a molecule of messenger RNA.
