Answer:
B. Mitochondria
Explanation:
The mitochondria are the organelles that supply energy to the cell. They are also known as the powerhouse of the cell.
Answer: The correct answer is- A. Chromosome numbers vary widely.
Chromosome can be described as thread like structure that is composed of DNA ( deoxyribonucleic acid) and possesses genes ( segment of DNA coding for a particular protein) on it.
Eukaryotic cells ( such as plant cell, animal cell) have variable number of chromosomes.
For instance, human beings have 23 pairs of chromosomes whereas it is different in plants depending on the species.
Thus, A) is the right answer.
Answer:
AA is labels would correctly model photosynthesis
By lowering the activation energy of the reaction
The Milky Way is a spiral galaxy
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