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Essay writing in biology: An example of effective student learning?

  • Published: December 1996
  • Volume 26 , pages 437–459, ( 1996 )

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  • Petrus Zeegers 1 &
  • Lynne Giles 1  

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The views of first-year biology students ( N =337) on an essay writing assignment were evaluated by means of a questionnaire. The students were asked to reflect on the strategies they employed, the number and type of resources used, their areas of difficulty and to evaluate their own performance. The data were used to elucidate possible areas of discrepancy between the approach taken by the students and that suggested by the Biology Department via information in student manuals and evaluation criteria. The data were also compared to similar studies on student writing previously reported for students of psychology and history. Finally a series of recommendations is made to help staff to allow their students to develop improved writing strategies, minimise the possible difficulties encountered and allow the writing exercise to fulfil its desired outcome, that of being an integral part of the process of learning.

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Zeegers, P., Giles, L. Essay writing in biology: An example of effective student learning?. Research in Science Education 26 , 437–459 (1996). https://doi.org/10.1007/BF02357454

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Biology Notes, Worksheets, and Quizzes

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BIOLOGY ESSAYS

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Martin Otundo Richard

Describe the digestion of a starchy meal along the human alimentary canal. S (13 mks) Answer-Starch in food is first broken down in the mouth by action of teeth/ chewing; This increases the surface area exposed enzyme action; saliva contains salivary amylase which breaks down some starch to maltose; saliva has a slightly alkaline pH which is optimum for the enzyme; The food moves down to the oespophagus and stomach; where the acidic pH, due presence of dilute Hcl, prevents further action of salivary amylase; In the duodenum, pancreatic amylase continues digestion of starch to maltose; Pancreatic amylase is produced in the pancrease; and enters the duodenum through pancreatic ducts; the acidic chyme is neutralized by the sodium bicarbonate in bile/ pancreatic juice; Maltose digestion continues in the ileum; whose walls secrete succus entericus/ intestinal juice; which contains enzyme maltase; which breaks down maltose to glucose; (Max 13 marks) (b) Describe the process of urea formation. (7marks) answer Excess amino acids / proteins; are transported to the liver 2. (a) Describe how gaseous exchange occurs in terrestrial plants. (13 marks) Answer Gaseous exchange takes place in a spongy mesophyl During the day air diffuses into large air spaces of spongy mesophyll; through stomata; the Carbon (IV) Oxide in the air diffuses into Photosynthetic cells; in solution form; during photosynthesis Carbon (iv) Oxide is used while oxygen is produced. Oxygen diffuses out of the leaf; through stomata; During the night; air diffuses into the air spaces (of spongy mesophyll), the air dissolves into film of moisture; then oxygen diffuses into the cells; and is used in respiration during which carbon (iv) oxide is produced, the Carbon (iv) Oxide diffuses out of the leaf; through stomata; due to concentration/diffusion gradient; Gaseous exchange takes place through epidermis (of young leaves and stems); epidermis of the root carries out gaseous exchange with air in the soil; some plants have pneumatophores/breathing roots; in which gaseous exchange occurs through lenticels; (found in

biology essays pdf

akshay pawar

Sudeep Sharma

Prasenjit Ghosh

Aims: 1. To enable candidates to acquire the knowledge and to develop an understanding of biological terms, concepts, facts, principles, formulae, etc. 2. To develop the ability to apply the knowledge of biology in unfamiliar situations. 3. To develop experimental skills required in biology practical work. 4. To create awareness about the problems of the environment and the manner in which these problems can be overcome. 5. To develop the ability to appreciate biological phenomena in nature and the contribution of biology to human welfare. 6. To develop interest in plants and animals and in their respective environments. 7. To develop scientific attitude towards biological phenomena. 8. To create awareness of the fundamentals of human biology, food, health, nutrition and population control.

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