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Biology 101 Review Essay

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Bio 101 Review Sheet
Test #1 (Chapters 1-3)

Chapter 1 1. Cell is basic unit of life 2. Hierarchy of life figure 3. 3 Energy categories and examples of each
Producer-plants and some microbes
Consumer-humans and other animals
Decomposer-fungi and other animals 4. Energy transfers are not 100% efficient – why? Cant capture all of the energy supplied by one source a. Where does all energy for biology come from? sun 5. Homeostasis- state of internal consistency or equilibrium 6. 2 types of reproduction asexual and sexual b. Benefits to sexual reproduction benefit of tremendous variation 7. Adaptation inherited characteristics or behaviors that enables an organism to survive and reproduce successfully in a given environment c. How it contributes to natural selection and evolution individuals with the better combinations of genes survive and reproduce 8. Evolution change in genetic makeup of a population 9. Why it’s important to take all your antibiotics so all of the bacteria can be eliminated, some of the bacteria can become stronger. 10. Taxonomy classification of life’s diversity 11. What our species name is homo sapiens 12. Order of taxonomic categories – mnemonic device!
Domain, kingdom, phylum, class, order, family, genus, species 13. 3 domains bacteria, archaea, eukaryote d. Basic differences e. What our domain is f. What domain universal ancestor likely is in archaea 14. General order of scientific method 15. Definition of hypothesis tentative explanation based of previous knowledge 16. Why larger sample size is better gives more meaningful results 17. Difference between independent, dependent and standardized variables
Independent-manipulated
Dependent-measured
Standardized-held constant for all substance 18. Placebo and double blind

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