I. Celluar Biology
Cells are the smallest structural and functional unit of an organism. Cells are considered the basic units of life because every living thing is made up of cells. It is important to study cells and learn how they work because cells help us have a better understanding of how living things develop and function. Without cells, our body and other living things we would not be alive, which is why cells are so important because without them there would no you or me.
II. How big are objects in the biological world?
Objects in the biological world are very small compared to objects in the real world. The metric scale is used to measure objects in the biological world by using grams as units of length, capacity, and weight/mass. Objects in the biological world are as tiny as 20 nanometers, compared to objects in the real world that is a huge difference in our eyes.
III. Levels of Organization
Biological systems are organized depending on the basic unit's level, the biological system is organized into eleven different levels. The biological system starts off as an atom then later atom's come together to form molecules, after that a cell is produced. After the cell is produced a tissue is created, then comes an organ. After organs are developed they create organ systems which lead too living organisms, after living organisms are create we get living growth and development.
IV. Types of Cells
Despite the similarities between prokaryotic and eukaryotic cells, they seem to have a fair amount of differences. Prokaryotic cells lack a membrane-bound nucleus, while eukaryotic cells contain a nucleus enclosed with membranes. Eukaryotic cells are usually more multicellular while prokaryotic cells are more unicellular.
V. Compare and Contrast Prokaryotes and Eukaryotes
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Eukaryotic Cells
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VI. Visualizing Cells
- High-power objective lenses allow you to see more detail in the specimen.
- The field of view decreases which means you see less of what you're observing.
- Bacteria produce chemicals that destroy plant tissue or cause abnormal growth. Bacteria feed by releasing enzymes which kill or injure plant cells, and then absorb the nutrients that become available.