What are yeast, Biology

Assignment Help:

Q. What are yeast?

Yeasts are unicellular fungi, which are widely distributed in nature. They are somewhat larger than bacteria. The cell length is about 10μm and the diameter is about a third of this. Most yeast is spherical or ellipsoidal. Yeasts that multiply by means of ‘budding' are known as ‘true yeasts'. Yeasts grow luxuriously at a moderate temperature in a solution of sugar in plenty of water.

Under suitable conditions the sugar is converted into alcohol and carbon dioxide is evolved. This is the reason that carbon dioxide is evolved from food materials spoiled by yeasts and pushes out corks from bottles with great force. Most of them do not develop in media containing more than 66% sugar or 0.5% acetic acid. Boiling destroys the yeast cells and spores completely. Some of the yeasts, which grow on fruits, are Saccharomyces, Candida and Brettanomyces.


Related Discussions:- What are yeast

Protozoa, what is the classification of protozoa

what is the classification of protozoa

Structures in the Dermis, list of the structures you would expect to find i...

list of the structures you would expect to find in the dermis.

Enzymology, Ethylene glycol is a poison that causes about fifty deaths a ye...

Ethylene glycol is a poison that causes about fifty deaths a year in the United States. Treating people who have drunk ethylene glycol with massive doses of ethanol can save their

Uncomplicated q wave mi-coronary artery bypass surgery, Uncomplicated Q ...

Uncomplicated Q Wave MI :  CABG has very little place in cases of uncomplicated Q wave myocardial infarction. However the place of urgent surgery has to be compared to thrombo

How antigen react against future infection by same agent, Q. How can an org...

Q. How can an organism that once underwent contact with an antigen be immunized against future infections by the same agent? This phenomenon is called as immune memory when an

Determine recommended nutrient intakes by selenium, Determine recommended n...

Determine recommended nutrient intakes by selenium? The FAO/WHO 2004 recommendation for nutrient intake for selenium by groups is given in Table. How do these recommendations c

Calculate the length of the implant used, Length of the Implant Used Th...

Length of the Implant Used The length of the implant to be used is dictated by the available bone height. The success rate is proportional to the implant length and the quality

Explain tricuspid regurgitation, Q. Explain Tricuspid regurgitation? Th...

Q. Explain Tricuspid regurgitation? Though tricuspid regurgitation is a common valvular abnormality on echocardiography rarely is it due to primary organic disease. Secondar

Global air circulation, Global Air Circulation The major wind systems o...

Global Air Circulation The major wind systems of the earth result because large masses of air around the earth's equator are forced to rise from the bottom due to surface heati

Crab, What are the excretory organs of crab

What are the excretory organs of crab

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd