Human are called heterotrophs because they can not prepare their own food from simple carbons sources but obtain ready made food from other organisms like plants etc.
Answer:
G1 - S - G2 (may be is option D)
Explanation:
The interface begins with phase G1 where the cell increases its volume and the mass is doubled.
Then, we continue with the S phase where DNA and histones are synthesized.
Afterwardsy we reach the G2 phase where the chromosomes are duplicated.
Finally we reach, the begining of mitosis.
Active transport requires energy, whereas passive doesn't.
Both Endocytosis and Exocytosis are transports that require energy from the cell in order to transport particles. Therefore, they're forms of active transport.
Cell wall and chloroplast
