In South African universities where the medium of instruction is English, writing and conceptualisation in English Second Language in Life Sciences are problematic for first year learners. This study focused on the extent to which Afrikaans – and Xhosa mother tongue speakers employ strategies in order to cope with the demands of scientific writing and how it affects their academic performance. The Basic Interpersonal Communication Skills (BICS) and the Cognitive and Academic Language Proficiency (CALP) theories of Cummins as well as the model of Collier provided a theoretical framework for this study. Tests and tutorials were analysed by means of content analysis. Writing strategies such as coherence has an impact on academic performance but there is no set pattern or degree in which different mother tongue speakers employ them. A collaborative approach that sensitises learners to the meaningful use of strategies to enhance their competency in scientific writing is recommended.Educational StudiesM. Ed. (Natural Science Education
