2.8+Cells+NCEA

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Describe Cell Structure and Function
Achievement Criteria


 * Achievement || Achievement with Merit || Achievement with Excellence ||
 * ·Describe cell structure and function. || ·Explain cell structure and function. || ·Discuss cell structure and function. ||

1Cells will include: plant cells, animal cells, and unicellular organisms.

2Cell structure and function will include: ·cellular components and organelles: cell wall, cell membrane, cytoplasm, nuclear membrane, nucleus, chromosomes, mitochondria, chloroplast, centriole, cilia, flagellum, vacuole, contractile vacuole, ribosome, endoplasmic reticulum, lysosome, golgi body, eye spot; ·cell processes: -movement of materials: diffusion, osmosis, active transport, secretion -cell respiration and photosynthesis as they relate to the overall functioning of the cell (detail of the stages in the processes is not required) -enzyme activity and DNA replication; ·factors that affect cell structures and processes; <span style="font-family: Tahoma,Geneva,sans-serif;">·reasons for similarities and differences between cells such as size, shape, relative numbers of organelles present, size of organelle (eg vacuole, cell membrane), internal structure.

<span style="font-family: Tahoma,Geneva,sans-serif;">3Terms: <span style="font-family: Tahoma,Geneva,sans-serif;">·Describe requires the student to define, give characteristics of, or an account of. <span style="font-family: Tahoma,Geneva,sans-serif;">·Explain requires the student to provide a reason as to how or why something occurs. <span style="font-family: Tahoma,Geneva,sans-serif;">·Discuss requires the student to show understanding by linking biological ideas.It may involve justifying, relating, evaluating, comparing and contrasting, or analysing.

=<span style="font-family: Tahoma,Geneva,sans-serif;">Special notes = <span style="font-family: Tahoma,Geneva,sans-serif;">Questions will require candidates to interpret diagrams and new information, draw diagrams, and write answers involving one or more paragraphs.

<span style="font-family: Tahoma,Geneva,sans-serif;"> Understanding of the following is expected:

<span style="font-family: Tahoma,Geneva,sans-serif;">·knowledge as given in the explanatory notes of the standard <span style="font-family: Tahoma,Geneva,sans-serif;">·terms as given in the explanatory notes of the standard <span style="font-family: Tahoma,Geneva,sans-serif;">·how enzymes function and the factors that affect enzyme activity within cells: temperature, pH, substrate, concentration, co-enzymes, enzyme poisons, lock and key model and induced fit.