What are the themes of Biology?
-There are said to be seven themes of Biology. The themes are: Evolution, New properties emerge at each level of biological hierarchy, Organisms interact with their environments exchanging matter and energy, Structure and function are correlated at all levels of biology, cells are an organisms basic unit of structure and function, The continuity of life is based on hereditary information passed through DNA, Feedback mechanisms regulate biological systems.
What is the Difference between Hypothesis and Discovery science?
-Discovery science is used when scientists make specific observations about the world around them and from those observations make assumptions about what would happen on a larger scale. Hypothesis based science occurs when scientists observe things ask questions about them and create experiments to help answer the questions.
Why is evolution so important to the themes of Biology?
- Evolution is said to be the core theme of biology because it accounts for the unity and disunity amongst living things. All species evolved from other species creating their differences but their ancestry tracing back also makes them similar.
Facts:
- Evolution is the core theme of biology
- Domains Bacteria and Archaea are prokaryotic and domain Eukarya has organisms with eukaryotic cells
- Eukaryotic cells have a membrane around the nucleus something that prokaryotes don’t posses
- All living things are connected through their evolutionary history and therefore common ancestry
- A theory is much broader and has much more evidence backing it up than a hypothesis
Prokaryotic and Eukaryotic cells are different in their size and in the presence of a nucleus in Eukaryotes. These cells are a good example of the theme of unity and disunity. The cells are clearly different in a few ways but they also share many similarities in that they both contain: plasma membrane, cytoplasm. DNA, and Ribosomes. This is a good indicator that the themes of biology apply even amongst the smallest pieces of it.
Summary: The themes of biology help us to better understand biology as well as to correlate the various occurrences. It helps us link different topics because all of the themes reoccur within the different topics and this helps us to group them together. Evolution is the overshadowing theme of all of biology and it provides a connection between all living things. Evolution accounts for the difference and similarities amongst organisms.
There are two types of scientific study Discovery and Hypothesis- based science. Discovery science comes to conclusions about general things after making specific observations. Hypothesis science asks questions and then develops experiments to explain observations. Effective experiments are created using control groups in order limit the number of variables affecting the results. Science is limited in that hypothesis must be testable and it must be possible to prove them wrong as well.
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