Answer: B. It protects the inner organs
Explanation: For example, your ribs protect the lungs, heart, stomach, and more!
Explanation:
Small substances constantly pass through plasma membranes. Active transport maintains concentrations of ions and other substances needed by living cells in the face of these passive movements. Much of a cell's supply of metabolic energy may be spent maintaining these processes.
Answer:
4
Explanation:
Amino acids are coded for by codons, which are triplets of nucleotides.
To work out how many amino acids are present, simply divide the cells into triplets.
AUG CGA UAC UGA
There are four triplet codons, so the sequence codes for four amino acids.