CELL-LESSON-3-MIDTERM-FINAL PDF

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CarefreeLynx9086

Uploaded by CarefreeLynx9086

University of Perpetual Help

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biology cell biology cell theory plant cells animal cells

Summary

This document presents lecture notes on cell biology. It covers topics such as animal cells, plant cells, and cell theory, along with the early discoveries of cells.

Full Transcript

Opening Prayer God our Father May everything we do Begin with your inspiration and continue with your saving help Let your acquisition of knowledge always find its origin in you And through you attain wisdom Lord, pour out on us the spirit of understanding, Truth...

Opening Prayer God our Father May everything we do Begin with your inspiration and continue with your saving help Let your acquisition of knowledge always find its origin in you And through you attain wisdom Lord, pour out on us the spirit of understanding, Truth and Peace Help us to strive with all our hearts to know what is pleasing to you When we know your will Make us determine to do it. Amen. Animal cells range in size from a few microscopic microns to a few millimetres. The shape of animal cells also varies, with some being flat, others oval or rod- shaped. Animal cells are eukaryotic cells with a membrane-bound nucleus. Animal cells are generally smaller than plant cells. Another defining characteristic is its irregular shape. Plant cells are eukaryotic cells that vary in several fundamental factors from other eukaryotic organisms. The plant cell is rectangular and comparatively larger than the animal cell. Plant cells are the building blocks of plants. Photosynthesis is the major function performed by plant cells. Photosynthesis occurs in the chloroplasts of the plant cell. It is the process of preparing food by the plants, by utilising sunlight, carbon dioxide and water. Antonie van Leeuwenhoek's microscopes, which he crafted by hand using secret methods, had powers of magnification ranging from 50 to 300 times. His microscopes allowed him to see sperm for the first time in history.

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