Question

fields of biology

1. biology is made up of many overlapping fields, each of which uses different tools to gather information about living things. fill out the table below with information about two fields of biology—one that appeals to you, and one that does not. include a description of each field and the tools scientists in the field use, as well as your impressions of each.

field of biology|description of field|why it does or does not appeal to me|
---|---|---|
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performing biological investigations

1. describe the system of measurement most scientists use when collecting data and doing experiments.
2. why do scientists need a common system of measurement?
3. what is the most important safety rule for you to follow in the laboratory?

apply the big idea

1. your teacher is doing a long - term experiment by having you and your classmates grow plants at home. you are testing the hypothesis that plant growth is affected by the amount of water a plant receives. all the data will be compiled in three weeks. why isnt it a good idea to use the 8 - ounce measuring cup from your kitchen or the 12 - inch ruler you have on your desk?

Explanation:

1. Most scientists use the International System of Units (SI). It is a standardized system with base units like meter for length, kilogram for mass, second for time etc. This system allows for consistency and accuracy in scientific data collection and experimentation across the globe.
2. Scientists need a common system of measurement to ensure that data can be accurately compared and replicated. Without a common system, there would be confusion and errors when sharing results between different researchers and laboratories.
3. One of the most important safety rules in the laboratory is to follow all instructions carefully. This includes wearing appropriate safety gear (such as goggles, lab - coats), knowing the location of safety equipment (like fire extinguishers, safety showers), and handling chemicals and equipment properly.
4. It isn't a good idea to use a kitchen measuring cup or a desk ruler because they are not calibrated to the same level of precision as scientific measuring instruments. Also, the units on these everyday items may not be part of the standard SI system, leading to difficulties in comparing and combining data from different students in a scientific experiment.

Answer:

1. The International System of Units (SI) is used by most scientists for collecting data and doing experiments. It has standardized base units for various physical quantities.
2. Scientists need a common system of measurement to accurately compare and replicate data, avoiding confusion and errors in sharing results.
3. Following all instructions carefully, including wearing proper safety gear and handling equipment correctly, is a crucial laboratory safety rule.
4. Kitchen measuring cups and desk rulers are not calibrated to scientific precision and may use non - standard units, making it hard to compare and combine data in a scientific experiment.