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Janssen Bio Ch 1
Mrs. Janssen's Chapter 1 Biology Review
| Question | Answer |
|---|---|
| What do scientists use scientific thinking to test? | hypotheses |
| Biodiversity generally increases from what? | poles to equator |
| All of the chemical processes in an organism are known as what? | metabolism |
| What is a biosphere? | living things and their environment |
| What is biodiversity? | variety of organisms |
| What is a species? | Closely related group of organisms that reproduces |
| How many new species are discovered each year? | 10,000 |
| How many species are estimated to become extinct each year? | 50,000 |
| Who developed the first classification system for living organisms? | Aristotle |
| Who explored the human body by dissecting corpses (dead bodies)? | Vesalius |
| When was the microscope invented? | 1600's |
| What development replaced the idea that living things could arise from non-living matter? | Cell Theory |
| What is an organism? | individual living thing |
| What is a cell? | basic unit of life |
| What is the term for single celled organisms? | unicellular |
| What is the term for organisms that are made of many cells? | multicellular |
| What do all organisms need to carry out life processes? | energy |
| What are the physical factors in the environment that organisms respond to? | stimuli |
| What is DNA? | genetic material |
| What is a system? | organized group of related parts |
| What is an ecosystem? | community of organisms and their environment |
| What does structure determine? | function |
| What is homeostasis? | stable internal environment |
| What is negative feedback? | response that returns a system to normal |
| What is evolution? | change over time |
| What is an adaptation? | inherited trait that give an advantage to an organism |
| Qualitative data is based on what? | descriptions, appearance |
| Quantitative data is based on what? | numbers, measurements |
| What is an observation? | collecting information through senses |
| What is a hypothesis? | proposed answer |
| What do scientists use to test hypotheses? | experiments |
| What are constants? | things that do not change |
| What are variables? | things that do change |
| What is a theory? | proposed explanation |
| What is accuracy? | how close a measurement is to the accepted value |
| What is precision? | how close together a set of measurements are to each other |
| When were electron microscopes first developed? | 1930's |
| What might an MRI be able to show that an X-ray cannot? | soft tissue |
| What is the study of how diseases spread? | epidemiology |
| What is a gene? | segment of DNA |
| What are transgenic organism? | organisms with genes from more than one species |
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jjanssen33