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The cell wall is a rigid structure that surrounds cells in plants, algae and fungi. It’s made mainly of the carbohydrate cellulose in plant and algae cells. In fungi, the cell wall is made of chitin. Its primary function is to support cells and prevent them from changing shape.
Module 2: Foundations in biology . SPECIFICATION. 2.1.1 Cell structure Learners should be able to demonstrate and apply their knowledge and understanding of: The use of microscopy to observe and investigate different types of cell and cell structure in a range of eukaryotic organisms.
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Cytoplasm . Single circular strand of DNA and plasmids (small rings of DNA found in the cytoplasm) The structures mentioned above (e.g. cell membrane) are examples of organelles - structures in a cell that have different functions.
The cytoskeleton in cells consists of microtubules and microfilaments. [2] Describe the roles of the cytoskeleton. [1] [3] (b). The pancreas is an organ that secretes protease enzymes. Outline how the organelles in pancreatic cells work together to produce and release these protein molecules from the cells.
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Mitosis Worksheet & Diagram Identification 1. Chromosomes move to the middle of the spindle during what phase? _____ 2. What are sister chromatids? When do they separate? _____ _____ 3. During which phase do chromosome’s first become visible? _____ 4.
Describe what cells, tissues, organs and organ systems are. Give named examples of cells, tissues, organs and organ systems in an organism. Explain what the different levels of organisation in an organism are.
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Which organelle is found in the cytoplasm of plant cells?
What cytoskeleton consists of microtubules and microfilaments?
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What are the two centrosome Oles called?
The diagram shows part of an epithelial cell from an insect’s gut. This cell is adapted for the three functions listed below. Use the diagram to explain how this cell is adapted for each of these functions. Use a different feature in the diagram for each of your answers. (a) the active transport of substances from the cell into the blood
