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MrMac Life Science
Mr Mac Life science and the charateristics of life
Question | Answer |
---|---|
What are all living things called? | Organisms |
What is a scientist called who studies living things? | Biologist |
What is a scientist called who studies living things and their interaction with the environment? | Ecologist |
What is a zoologist? | A scientist who works with and studies animals. |
A scientist who studies how traits, genes and DNA are passed to offspring is called a... | geneticist. |
A scientist who studies tiny, little organisms is a... | microbiologist. |
Plant cells are different from animal cells because they have... | a boxlike shape, cell wall and chloroplasts and animal cells do not! |
An organism that has offspring (children) who are genetically identical to themselves reproduces how? | Asexually |
When an offspring is produced from 2 parents this is called... | sexual reproduction |
Name the six characteristics of living things. | 1. It reproduces 2. It grows and develops 3. It responds to stimuli or its environment 4. It has DNA 5. It has cells 6. It uses food for energy |
What are cells? | The basic unit of life. Membrane covered structures that make up all living things. |
Where is DNA found? | Usually in the nucleus of cells. In all living things. |
What is a double helix? | The shape in which DNA can be found. It looks like a "twisted ladder". |
Are things that were once alive called organisms? | Yes, even when something dies it is still an organism. |
Name some other fields/branches of biology. | zoology, botany, microbiology, genetics, mycology, ornithology, cytology, virology, bacteriology, etc... |
What is a unicellular organism? Give some examples. | An organism that is made of only one cell. Examples are some bacteria, amoebas and many plankton. |
What is a multicellular organism? Give some examples. | An organism made of many specialized cells. Examples are all mammals and plants. |
What are the 6 characteristics of living things we have discussed? | 1.Get and use food for energy 2.Reproduce 3.Made of cells 4.Respond to environment 5.Have DNA 6. Grow and develop |
What are the 2 types of reproduction? | Asexual and sexual reproduction |
Name ways plants respond to their environment/stimuli. | Grow and turn leaves towards sunlight, close blossoms at night, drop leaves in winter and some even sense and capture insects. |
What is cell theory? | The cell is the basic unit of life and all organisms are made of cells. |
Budding and regeneration are 2 types of which reproduction? | Asexual |
What are advantages of asexual reproduction? | No time and energy used to find mate and easily repopulate an area with just 1 organism. |
What is the main disadvantage with asexual reproduction? | A lack of genetic variation. |