1. What are the levels of life's hierarchy of organizations?
The levels of life's hierarchy of organizations are: (from the smallest to the biggest one) molecule->organelle->cell->tissue->organ->organ system-> organism->population->community->ecosystem->biosphere.
2. What are the two different kinds of cells in living things?
The two different kinds of cells are prokaryotic and eukaryotic. The eukaryotic cells are bigger and more complex than the prokaryotic. They also contain nucleus, which the prokaryotic do not.
3. Which two main approaches do scientists use to learn about nature?
The two main approaches scientists use to learn about nature are discovery science, which contains inductive reasoning, and hypothesis-based science, which contains deductive reasoning.
Five main facts from the reading:
1. Producers (plants) are the living things which provide food for a typical ecosystem, and consumers are the ones who eat the producers (people, animals).
2. There are three domains of life: Archaea, Bacteria, and Eukarya. People are in the most developed domain - Eukarya.
3. In every DNA chain, gene A combines with gene T, gene T combines with gene A, gene G combines with gene C, and gene C combines with gene G.
4. All living things exhibit complex organization.
5. Inherited information carried by genes controls the pattern of growth and development of organisms.
Diagram:
This diagram shows that the eukaryotic cell is bigger and more complex than the prokaryotic. Link:http://www.clipartof.com/interior_wall_decor/details/Biology-Diagram-Of-Prokaryotic-And-Eukaryotic-Cells-Poster-Art-Print-13964
Summary:
This chapter's introduction talks about how leopards are one of strongest climbing animals, and this is the reason why they eat their victims on trees, so nobody can reach them and steal their food.
In the essence of the chapter we learned first about the themes in the study of Biology and the life's hierarchy of organization. We learned about the fact that living organisms interact with their environments, exchanging matter and energy by producers and consumers. We looked up briefly at prokaryotic and eukaryotic cells and we saw that eukaryotic cells are bigger and more complex. We learned about the unity of life, and that all forms of life have common features. We looked briefly at the three domains of living organisms: Bacteria, Archaea, and Eukarya. We learned about Charles Darwin and his most important book called "On the Origin of Species by Means of Natural Selection". We read about the two main approaches scientists use to learn about nature. We briefly learned about how biology, technology, and society are connected in important ways and how is evolution connected to our everyday lives.
This chapter's introduction talks about how leopards are one of strongest climbing animals, and this is the reason why they eat their victims on trees, so nobody can reach them and steal their food.
In the essence of the chapter we learned first about the themes in the study of Biology and the life's hierarchy of organization. We learned about the fact that living organisms interact with their environments, exchanging matter and energy by producers and consumers. We looked up briefly at prokaryotic and eukaryotic cells and we saw that eukaryotic cells are bigger and more complex. We learned about the unity of life, and that all forms of life have common features. We looked briefly at the three domains of living organisms: Bacteria, Archaea, and Eukarya. We learned about Charles Darwin and his most important book called "On the Origin of Species by Means of Natural Selection". We read about the two main approaches scientists use to learn about nature. We briefly learned about how biology, technology, and society are connected in important ways and how is evolution connected to our everyday lives.
Key terms:
1. Molecule - a cluster of atoms held together by chemical bonds.
2. Organelle - a membrane-bound structure that performs a specific function in a cell.
3. Cell - separated from its environment by a boundary called a membrane.
4. Tissue - many cells, organized into a communication network of spectacular complexity.
5. Organ - a group of tissues that has a common purpose.
6. Organ system - consists of several organs that work together.
7. Organism - an individual living thing.
8. Population - consists of all individuals of a species living in a specified area.
9. Community - the entire array of organisms inhabiting a particular ecosystem.
10. Ecosystem - consists all of the organisms living in a particular area.
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