You will probably not see the blue with the naked eye. The iodine is turning blue in response to the starch in the cells. As long as the cells and nuclei are visible under the microscope, you are fine. ...
The most important thing to determine is WHAT you measured the temperature OF. If you measured the temperature of the bag, then the temperature will be higher for the carbon dioxide bag. That’s because the carbon dioxide is trapping the heat, and thus, it heats up. Therefore, your thermometer was probably in thermal co...
The prepared slides used in Biology 3rd Edition are the same ones used in the 2nd edition. There is just one extra slide that will not be used in the 3rd edition. ...
Perhaps in some countries, it is hard to find meat tenderizer. However, any large supermarket should carry some. If you cannot find any, you might try a kiwi fruit. It has the same chemical (papain) that meat tenderizers use. Ideally, the fruit should be a tad under ripe. Peel the fruit and just add the whole peeled fr...
Dishwashing liquid formulations have changed over time, making it difficult to find one which contains sodium stearate. This experiment can still be completed with the assumption that the dish soap contains a theoretical sodium stearate concentration. It will work regardless, with the difference that in the end, the mo...
The microscope that we offer has been especially chosen for our biology courses. It has 3 magnifications (40,100,400), a built-in light source, an iris to change the intensity of the light, separate coarse and fine focus knobs, and is DIN standard. The model is National Optical Model 131-CLED and is listed as an “advan...
You can go to a pet store and ask to take samples of water from an aquarium. The variety of microorganisms you will see will be different, but you will see microorganisms. If you cannot obtain water from an aquarium, you might try a dog’s water bowl, as long as it has set out for a few days. There will also be microorg...
Once you know the mass in amu, you also know how many grams it takes to make a mole. Remember, the mass on the periodic chart tells you two things: 1) The mass in amu 2) The number of grams it takes to make a mole. When you figure out the mass from the periodic chart, you will find that it is 295.3. That tells you...
Yes. The beet plants might end up with purple leaves at some point. You can just count them as green leaves if you want. The purple is the result of pH changes in the leaves. ...
Cloudy ammonia will work for this experiment. It is the same as clear ammonia, only with soap added ...