Which of the following best describes the function for the organelle labelled ‘d’?
(a) moves substances across the cell membrane
(b) transports materials around the cell
(c) controls all cell activities
(d) packages materials for export from the cell

Put the following processes of protein synthesis in the correct order: - dna strands unwind and separate - mrna copies dna according to complimentary base pairing - trna's anticodons bring amino acids to the corresponding mrna codons - amino acids bind to each other making a protein - mrna leaves the nucleus - a stop codon is reached, the newly formed protein is released to go do its job for the cell

What are the seven economic and social goals?

Explain why ecosystem diversity results in species diversity in a healthy biosphere