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Biology Chapters 1-7 - C hapter 1 I n teractive 1 Write a...

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Chapter 1 Interactive 1. Write a brief description of each of these levels of biological organization a. Biosphere i. This is the whole Earth and all of the separate ecosystems within it. It holds all life on Earth. b. Ecosystem i. This consists of all the living things in a particular area, along with all of the non-living things such as soil and water. c. Community i. This consists of all the living things in a particular area. d. Population i. This consists of all the individuals of a species that live within the same area. For example: Maple Trees or White- tailed Deer e. Organism i. Individual living thing. f. Organs and Organ Systems i. Organs are made up of two or more tissues and serve a particular function within the body for example: a lung. g. Tissues i. Tissues make up organs and are made up of cells. h. Cells i. Cells make up tissues and can either be part of a multicellular organism or be a unicellular organism on its own.
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i. Organelles i. Functional components that make up cells. j. Molecules i. This is the last level and consists of the chemical makeup of the organelles of a cell. Molecules are the atoms of the organelles. 2. Five Examples of how systems biology may impact medical practice or environmental policy making a. Systems Biology strives to study the whole of a biological ecosystem. When they are successful, scientists can then begin to discover different approaches to answering a common question such as: How can this drug affect someone’s blood pressure? How might increasing a crop’s water supply affect the processes of this plant? 3. Describe the pathway from DNA nucleotides to proteins a. Nucleotides in the DNA signal for different amino acids. Once the amino acids connect, they combine to form a protein. 4. What is a commonly used criterion for placing plants, fungi, and animals into separate kingdoms? a. Fungi have a special way of getting energy and absorb/take it away, from their surroundings b. Plants carry out photosynthesis in order to gain energy c. Animals ingest other animals for energy 5. Describe in your own words Darwin’s theory of natural selection as the mechanism of evolutionary adaptation and the origin of new species a. When animals reproduce, they reproduce more than enough to survive into the next generation. This causes competition and, logically, only the strongest will survive. This creates
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stronger and stronger animals that are in turn, more suited to their environments. Also, when they are separated or isolated into a different environment, natural selection also makes sure that the animals, over many generations, will also adapt to different environments through, “Survival of the Fittest.” 6. How did predators “learn” to avoid coral snakes? / Why were the results of the mimicry study presented as the percent of attacks on king snakes in each area rather than the total number of attacks?
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