A fresh leaf was homogenised and the suspension subjected to differential centrifugation. The procedure is shown in the flow chart below. Which of the following represents the order in which these organelles were removed from the suspension?

Afraction 1 chloroplasts, fraction 2 mitochondria, fraction 3 nuclei, fraction 4 ribosomes

Bfraction 1 nuclei, fraction 2 mitochondria, fraction 3 chloroplasts, fraction 4 lysosomes

Cfraction 1 nuclei, fraction 2 chloroplasts, fraction 3 ribosomes, fraction 4 lysosomes

Dfraction 1 nuclei, fraction 2 chloroplasts, fraction 3 mitochondria, fraction 4 ribosomes

ZIMSEC Biology 9190/1 Paper 1, November 2004, Q1

Get the full paper, not just one question

Danho has every sitting for this paper, with your progress tracked question by question, offline.