Question

which of the following carbon compounds helps form muscles and bone and controls cell processes?

• nucleic acids
• proteins
• lipids
• carbohydrates

question 5
which of the following organelles is responsible for providing a barrier between the cell and its surroundings?

• golgi apparatus
• cell membrane
• nucleus
• cytoplasm

Explanation:

Proteins are essential for forming muscles and bones and play a role in controlling cell - processes. The cell membrane acts as a barrier between the cell and its surroundings, regulating the movement of substances in and out of the cell.

Answer:

1. B. proteins
2. B. cell membrane