How the data will be used to answer questions about the salt requirements of brine shrimp?
Nov.23, 2008 in
Uncategorized
bunmi asked:
The conentration in water affects the hatching of brine shrimp eggs.A scientist wants to determine the best conditions in which to hatch the shrimp eggs. In a laboratory, brine shrimp will grow at room temperature in small glass containers of salt water.
The conentration in water affects the hatching of brine shrimp eggs.A scientist wants to determine the best conditions in which to hatch the shrimp eggs. In a laboratory, brine shrimp will grow at room temperature in small glass containers of salt water.
Describe the steps of a controlled experiment that would determine the best saltwater concentration in which to hatch brine shrimp eggs.In your response,be sure to indicate:
-The materials that will be used
-The type of data that will be collected
-How the data will be used to answer questions about the salt requirements of brine shrimp.
Tags: database management, data recovery, data model, econometric data analysis, data analysis
November 25th, 2008 at 8:44 am
> The materials that will be used
A room that has a controlled temperature.
Brine shrimp cysts (a.k.a. eggs)
Artificial salt solutions, of differing concentrations
Glass containers
Lights
> The type of data that will be collected
The first thing to do is to record your “givens” — the temperature, the illumination from the lights, the number of brine shrimp eggs you’ll be using in each container, the amount of water you’ll be using in each container, the salt formulas to be used in each container, whether you’re having the lights on all the time or simulating a day/night cycle.
Basically, you want to describe your set-up exactly enough that another independent person could set up the same experiment exactly, by reading what you’ve written.
Anyways, you record:
time of observation, and number of brine shrimp larvae at that time for each container. You need to make these observations at regular intervals (say, 1 hour intervals).
> How the data will be used to answer questions about the salt requirements of brine shrimp
I think that’s pretty obvious.
There are other questions, though, e.g. of temperature and illumination — that would have to be answered through other experimentation.
Good luck, young scientist!