Growth from an overnight culture of the microbe is smeared on a microscope slide. A drop of 3% hydrogen peroxide is added. If copious bubbles are observed, the microbe is positive for catalase.atalase is then added and the reaction is observed. To view the catalase test in VirtualUnknown â¢ Microbiology, complete the following steps: 2. Press the Play button to watch the video. A short video clip showing microscopic observation of a catalase test for the unknown organism will play.
by Tomâs Guide Staff. Encryption refers to any process used to make sensitive data more secure and less likely to be intercepted by those unauthorized to view it. There are several modern types of encryption used to protect sensitive electronic data, such as emails, files, folders and entire drives.
Performs a transformation on data, keeping the data from being read by third parties. This type of encryption uses a single, shared-secret key to encrypt and decrypt data. Public-key encryption (asymmetric cryptography). Performs a transformation on data, keeping the data from being read by third parties.o use public-key cryptography to digitally sign a message, A first applies a hash algorithm to the message to create a message digest. The message digest is a compact and unique representation of data.