give an example of each level of biological organization‚ starting with an ecosystem and ending with atoms. 4. Describe the two main dynamic processes in an ecosystem. 5. Compare the structure of prokaryotic and eukaryotic cells. 6. Distinguish between the three domains and four eukaryotic kingdoms of life. Evolution: Biology’s Unifying Theme 7. Describe the two main points that Darwin made in his book On the Origin of Species by Means of Natural Selection. 8. Describe the two observations that led
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linear magnification of drawings and the actual size of specimens in images of known magnification f. Explain the importance of the surface area to volume ration as a factor limiting cell size g. State the multicellular organisms show emergent properties h. Explain that cells in multicellular organisms differentiate to carry out specialized functions by expressing some of their genes but not others. i. State that stem cells retain the capacity to divide and have the ability to differentiate along
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reproduce best distinguishes living things from nonliving matter. The continuity of life is based on reproduction of cells‚ or cell division. In unicellular organisms like amoeba‚ division of one cell reproduces the entire organism. Multicellular organisms depend on cell division for: — Development from a fertilized cell — Growth — Repair Cell division is an integral part of the cell cycle‚ the life of a cell from formation to its own division. CELL
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c) Can a cell be multicellular? a) Cell: Smallest unit that displays the properties of life; always contains cytoplasm surrounded by a plasma membrane. b) Unicellular Organism: An organism that consists of only one cell‚ unlike a multicellular organism that consists of multiple cells. c) No single cell is multicellular; however‚ it has been noted that a cell can evolve and become multicellular. 2. a) What is a difference between prokaryotic and eukaryotic cells? b) What is
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Sponge Characteristics Kingdom Animalia Phylum porifera Multicellular Eukaryotic Simplest animals All aquatic Can be found in many colors and shapes Most are filter feeders Filter feeders- eat by straining particles from the water Do not have tissues Lack muscle and nerve cells Sessile- unable to move from where they are attatched Secrete roxing to: 1. Prevent other sponges from growing in their area 2. Protection from predators and paracites Sponge reproduction Reproduce both sexually and asexually
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they are very similar. Bacteria are the more complex organism of the two and were eventually were put to further use in the evolutionary path of the eukaryotic cell. The theorized course by which prokaryotes paved the way to the first eukaryotic cells is known as endosymbiosis. The Endosymbiosis theory attempts to explain the origins of eukaryotic cell organelles such as mitochondria in animals and fungi and chloroplasts in plants. Endo means “within” and symbiosis is a type of “cooperation”. An
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learnings: 1) In 1665‚ Robert Hooke first discovered and named the cells. 2) Cell is the structural and functional unit of all living organisms. 3) Organisms may be unicellular or multicellular. A single cell constitutes the unicellular organism whereas many cells coordinately function in case of multicellular organism. 4) The size‚ shape and volume of the cell are related to the specific function that they perform. 5) A cell generally shows plasma membrane‚ nucleus and cytoplasm 6) Plasma
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DNA responsible for providing the cell with its unique characteristics. The nucleus is the brain of eukaryotic cells. It is only present in eukaryotic cells (which are eukaryotic because they have a nucleus) and there is only one of these organelles in each cell. Being the largest organelle in the cell‚ the appearance of the nucleus is quite unique. It is the most obvious organelle in any eukaryotic cell‚ composing about 10% of the total volume of the cell and is found near the center of the cell
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Differences and Similarities Charlie Drees Between Prokaryotes and Eukaryotes Mr. Stergar 6th Period 6th Period 10/12/16 I have decided to do an essay about differences and similarities
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1. a) Define a cell. b) What is a unicellular organism? c) Can a cell be multicellular? A) the structural‚ functional‚ and biological unit of all organisms. B) a organism that only consisits on one cell C) A single cell cannot be multicellular. 2. a) What is a difference between prokaryotic and eukaryotic cells? b) What is one significant similarity? A) eukaryotic cells have a neuclus‚ prokaryotic cells do not. B) Both have DNA 3. Which type of microscopy provides a 3d view of the surface of
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