Cell drinking : pinocytosis
cell eating :phagocytsis
As I had said before, but was deleted, the amino acid was Histidine, this is known because of the codon is CAU, and is found from various tables that show the codons and their corresponding amino acids.
Protects the cell and provides structure
The most important thing for the survival of the rapidly growing population in the capital city is the food. The food is the very basic need of an individual. The other facilities needed by the population, such as recreational spots, better communication and transportation systems are all secondary to the food. The lack of food will lead to starvation and ultimately death.
Hence, the correct answer is option (b) - structures for growing food in or near cities.
