STEP 2: Submitted Samples - Day 0 to 21

Here are the pictures of your samples before and after 21 days of incubation with a special food that helps yeasts grow. Look for changes between the pictures, what has happened? Do you notice any differences? Compare both of your pictures to the picture on the right that shows the yeast food before you added your sample.

CLEAN
 and
CLEAR

#559

Doesn't look great for yeast growth but let's see what grows on a petri dish! 

#567

This looks like there is yeast growth! There are bubbles most likely from the gas produced by yeast! We will see what we find on a petri dish! 

#561

Yeasts don't appear to be growing but let's see what grows on a petri dish! 

#562

This isn't looking like yeasts are growing but we will check what grows on a petri dish to be sure! 

#563

There are no clear signs of yeast growth but we will still see what grows on a petri dish! 

#564

Doesn't look much different after 21 days, but we will see if anything grows on a petri dish! 

#565

Yeast growth is not clear in the tube but we will try a petri dish! 

#566

The media became cloudy but if there is yeast growth cannot be fully determined by looking at this tube. Let's try it on a petri dish! 

#568

There are bubbles and the media is becoming cloudy! These are good signs of yeast! A petri dish will help us decide if there is yeast! 

#569

This doesn't look like it has much growth. We will try putting it on a petri dish to verify there is no growth! 

#570

This sample doesn't appear to have much growth in it. We will plate it out to see if we get any yeast! 

#571

This sample doesn't appear to have growth but we will streak it out on a petri dish and see if it does have any yeast! 

#572

This looks good for yeast growth! We will streak it out and see if any yeast grows on a petri dish! 

#573

See the bubbles in the liquid! This looks good for yeast growth! We will plate this on a petri dish and check for yeast growth! 

#574

The media is cloudy! This means there is some microbial growth! It could be yeast! We will plate it out and see what grows! 

#575

The media is cloudy! This means that there are probably microbes growing! We will plate them out to see if they are yeasts! 

#576

The sample has some cloudiness to it which means that there are microbes growing! We need to plate them on a petri dish to see if they are yeast! 

#577

The sample doesn't look too promising for yeast growth but we will plate it out and check to see if you got yeast! 

#578

There doesn't appear to be yeast growth in this tube but let's see what grows on a petri dish! 

#579

The sample seems to have microbial growth in it! We will plate it out to see if it is yeast or other microbes! 

#580

Look at those bubbles in the second picture! Those are a good sign that yeast are present! This is getting moved to a petri dish! 

#581

This is interesting! The media turned black so it's hard to see what's going on! We will plate this out to see whats going on! 

#582

The media turned really dark and it is hard to see! We will plate it to see if there is microbial growth! 

#583

This is cloudy! This means that there is probably some microorganisms growing in the media! We will plate it out to see what grows! Hopefully yeast! 

#584

The media got cloudy! That looks good for microbial growth! Let's see if it is yeast by plating it out on a petri dish! 

#585

There may be yeasts in this tube! You can see the liquid got cloudier this may be a sign that it has yeast! We will plate it out and see what grows! 

#586

The white coating on the fruit is most likely yeast! The media is also cloudier so this is a good candidate for yeast growth! We will plate it out to see! 

#587

The liquid got very cloudy which is a good sign of yeast growth! We will plate it out to see what grows! Hopefully we got yeast! 

#588

There doesn't appear to be much change between the samples. This may not contain yeast but we will plate it to see  

#589

The liquid looks a little cloudier! This could mean there are yeast growing in this tube! We will streak it out to make sure that it is yeast! 

#590

There is slight cloudiness in the tube that might indicate yeast growth in the tube! We will streak it out to see if there is yeast! 

#591

This doesn't look like it has yeast growth in it but we can double check it with a petri dish! 

#592

This tube doesn't appear to have any yeast growth in it! We will streak it out to double check that it doesn't have yeast! 

#593

This tube doesn't appear to have any yeast growth. We will streak it out on a plate to help verify this! 

#594

There doesn't appear to be any yeast growth in this tube. We will streak it out to verify that this is true! 

#595

There doesn't appear to be any yeast in this tube. We will streak it out on a petri dish to verify this! 

#596

This tube isn't cloudy so there probably isn't any yeast in this tube. We will streak it out to see if there is any yeast in this tube! 

#597

This tube may have slight signs of yeast growth. There seems to be a collection of white down at the bottom of the tube. This might be yeasts!  

#598

This tube doesn't look like it has yeast growing in it but we will streak it out to double check! 

#599

The liquid seems a little bit cloudier and it looks like things have settled on the bottom a little. These are great signs of yeast growth! Move to step 4! 

#600

There seems to be a pile of stuff down at the bottom of the tube! This is a great sign of yeast growth! Move onto step 4! 

#601

The liquid got cloudier which is a great sign that yeast are growing in there! We will streak it out to see if there are! 

#602

There is a small pile of white at the bottom of this tube! This is a sign that yeast may be growing in this tube! We will continue to step 4 to see if you have yeast! 

#603

This sample doesn't appear to have much growth of yeast in it. We will streak it out on a petri dish to double check! 

#604

There seems to be a settled pile of white at the bottom of this tube! This looks very good for yeast growth! We will see if any grows on a petri dish! 

#605

The sample has a pile of white formed at the bottom! This is a great sign that there is yeast growth! We will see if yeast grow on a petri dish! 

#606

The liquid is cloudier which is a good sign that there is microbial growth! We will streak it out to see if there is yeast in there! 

#607

There is some gas production! You can see bubbles! This is a good sign of yeast! Let's see what grows on a petri dish! 

#608

There is some gas production which you can see because there are bubbles. This i a good sign of yeasts so we will see if any yeast grow on a petri dish! 

#609

The sample sure looks different but I wouldn't say it is growing yeast. We will streak it out to see if it is though! 

#610

There is a lot of white colored stuff collecting down at the bottom of the tube! This could be a sign of yeast! We will streak it out to see what grows! 

#611

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#612

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#613

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#614

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#615

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#616

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#617

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#618

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#619

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#620

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#621

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#622

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#623

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#624

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#625

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#626

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#627

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#628

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#629

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#630

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#631

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#632

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#633

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days! 

#634

The sample has to sit and grow for 21 days to allow for any yeasts to grow up! Check back in 21 days!