How to find peer review journal sources for osmolarity?

in

I've gotta write a lab report for a lab about osmolarity of polychaetes that were put in different concentrations of salt water.

Does anyone know the best way to find peer review journal sources?

Thank you
This is a very basic lab for Physiology on the college level.

Answer: 
You could use google scholar but then you will have to track down papers that are free unless you have access via a library. PLoS journals are free to use and some publishers put some of their older papers out for free and there are a few public access papers available where the authors have paid the publication fee. It will take a bit of work though.

How to calculate Shannon Weiner value for encrusting organisms?

in

Since some organisms, such as sponges and algae are encrusting and cannot be counted as single individuals, how can I get the Shannon Wiener diversity index then?

Answer: 
Consider each colony or clone as a single individual.

How to temporarily make your heart stop?

in

You see my mother farted on me in my sleep as a prank and I want to get back at her so I want to temporarily make my heart stop to pretend that I am dead to trick her. Any tips?

Answer: 
You can't. And even if you could that would be a horrible prank. Just hide something super important to her, or maybe replace her toothpaste with something gross.

How to make a model of mitosis and meiosis?

in

Out of polymer clay. We've just been told to make a model, no explanation of what mitosis and meiosis ARE.

Answer: 
There are diagrams online and in any Biology text that will explain these two processes. Strange that you should have to make models of something of something with which you are not familiar.

How to produce a monoploid from a diploid?

in

My question is just that.

I know how to get a triploid from a diploid and tetraploid using colchicine, but how would i get a monoploid from a diploid?

Answer: 
An introduction to Genetic Analysis says "A cell destined to become a pollen grain can instead be induced by cold treatment to grow into an embryoid, a small dividing mass of cells. The embryoid can be grown on agar to form a monoploid plantlet, which can then be potted in soil and allowed to mature"

How to design primers for ultra beginners ?

in

I would like to design a primer pair for isolating GFP Gene from purified jellyfish DNA for Amplification by PCR. How can i do this ?

Answer: 
Find the sequence of the gene in NCBI by searching here http://www.ncbi.nlm.nih.gov/nuccore?term=jellyfish%20gfp Then paste the sequence or the locus number in here http://www.ncbi.nlm.nih.gov/tools/primer-blast/ Put in your parameters like how big you want the product to be and the program will make primers for you

How to keep nutrient levels the same in a plant growth experiment?

in

During the plant growth period, water will be lost from the plant tubes due to evaporation and transpiration, and nutrient and nickel will be lost from the solution as they are taken up by the plants. What should you do to ensure that the levels of nutrients and nickel are kept at their original level?

All of the plants were contained in test tubes holding 25ml of nutrient/nickel solution.

Answer: 
Continuous drip hydroponics

How to count bacteria on a petri dish with no dilution?

in

For a project I am taking bacteria from different kinds of fruits. Reading up on the internet on how to count bacteria, many mention that I have to multiply it by my dilution, however, I have not diluted the surface area of the fruit. How should I go about then? ><

Answer: 
Then you just count them. Most often undiluted bacterial suspensions give too many colonies to count, so serial dilutions are done to make the outcome countable. If you had to dilute your original by 100 times then after counting you know the original had 100x more. If you can count without any dilution, that's fine.

How to tell the difference between the thalamus and the third ventricle in 2D picture?

in

In a 2D picture, how can you tell the difference between the thalamus and the third ventricle? Since the thalamus lies lateral to the third ventricle, they are kinda seen in the same location on a medial view of the brain. Is there some way to distinguish between the two when they are not in the same picture?

Answer: 
Usually, when you get a sagittal section, there will be some reference the comes with the picture that tells you whether or not the plane of section is midline. If not, there a couple of ways you can tell. If the image you have is an MRI or CT, open spaces are usually depicted as black. So, if there is a black, open area in the image, it is likely the 3rd ventricle. If the area is white and solid, you're probably looking at the thalamus. If you're just referring to a drawn picture, though, I suppose the picture would show both the third ventricle and the thalamus.

How to mix a degree in biology and diving?

in

I am a diver and wondering if a degree in biology would help me get to my goal which is working with sharks, whales and dolphins. Something in the lines of research and protecting the oceans.

Answer: 
Start w/ biology and chemistry, move into oceanography and environmental science. If you are dedicated and work very hard, you will become a scientist this world needs, you will always have a job, be proud of it, and hopefully have some fun along the way! Best wishes...

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