1.2: Ultrastructure of cells

Prior learning & retrieval practice

U2: Eukaryotes have a compartmentalised cell structure.

S2: Drawing of the ultrastructure of eukaryotic cells based on electron micrographs.

Exercise 1: Study the Quizlet decks below

A1: Structure and function of organelles within exocrine gland cells of the pancreas and within palisade mesophyll cells of the leaf.

Exercise 2: Describe functions of each of the organelles found in eukaryotes. State whether you would find it in a pancreatic exocrine cell or a pallisade cell or both.

S3: Interpretation of electron micrographs to identify organelles and deduce the function of specialized cells.

Exercise 7: For each of these images try to identify the organelles and deduce the function of the cell.

Essential idea: Eukaryotes have a much more complex cell structure than prokaryotes.

Exercise 8: Compare and contrast Prokaryotic and Eukaryotic cells.

(The command term compare and contrast refers to similarities and differences. When answering this kind of question you must refer to both of the items that you are comparing in the same sentences.)

Good words to use when comparing something in your IB exams are: both, while, whereas, and. You can also answer this type of question with a table.

Example:

1. Prokaryotes have 70S ribosomes while Eukaryotes have 80S ribosomes.

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