Explain the characteristics of agar- agar, Biology

Assignment Help:

Explain the Characteristics of Agar- Agar?

There are many characteristics, which make agar-agar, an ideal solidifying agent. These are:

(a) It has high gel strength, so it can be used at a concentration that won't inhibit microbial growth due to low water activity.

(b) It solidifies at 40 o C and once solidified it can liquefy at 85-90 o C. So it is ideal for isolation of thermophiles.

(c) It does not have nutritional value. It is used as a nutrient source only by some marine bacteria, so that in normal use, it is not liquefied by bacterial growth. Solid media provides a hardened surface on which microorganisms can be grown in the form of discrete colonies to get pure cultures. Solid medium can be used in petri plates as agar plates.


Related Discussions:- Explain the characteristics of agar- agar

What are arterial vessels and arterioles, What are arterial vessels, arteri...

What are arterial vessels, arteries and arterioles? Arterial vessels are each blood vessel that carries blood from the heart to the tissues. Arteries and arterioles are arteria

Explain anaplerotic reactions, Anaplerotic Reactions Anaplerotic  reac...

Anaplerotic Reactions Anaplerotic  reactions are  reactions  that  replenish the  intermediates of  citric acid cycle. The  special  enzymatic mechanisms  by  which  the  pool

Sun, wath is sun

wath is sun

Long-hair in cats is because of recessive long-hair allele, Long-hair in ca...

Long-hair in cats is due to the recessive long-hair allele, l. Black cats (rather than tabbies) are due to the recessive agouti allele, a. A long-haired black female cat has mat

Periphyton - aquatic ecosystem, Periphyton - Aquatic Ecosystem These a...

Periphyton - Aquatic Ecosystem These are organisms which remain attached or clinging to stems and leaves of rooted plants or substances emerging above the bottom mud. Usually

Frog, why frog respire through skin

why frog respire through skin

Determine which seed is best for your lawn, Assume that your yard has many ...

Assume that your yard has many tall trees that result in about fifty percent of the yard being shaded and fifty percent of the yard being exposed to full sun. The shaded areas and

Shifting cultivation - degradation of ecosystem, Shifting cultivation - Deg...

Shifting cultivation - Degradation of Ecosystem This method of cultivation is practised all over the globe, but is more prevalent in the tropical countries. In this practice a

Issues impacting health and development - limited resources, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

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