In an experiment to study the effect of ultraviolet light on bacteria, it was concluded that ultraviolet light has a sterilizing
effect on bacteria. Which of these observations could have led to this conclusion? A) Ultraviolet light stopped the replication process of bacteria.
B) Bacterial colonies exposed to ultraviolet light continued to replicate.
Eliminate
C) Bacterial colonies exposed to ultraviolet light became resistant over time.
Answer A) Ultraviolet light stopped the replication process of bacteria.
UV radiation is the mutagen which means it can cause mutation in the genome of the living organisms such as humans, bacteria, virus and other microorganisms. These rays are harmful for bacterial colonies when particularly exposed to wavelength of 260nm to 270nm. These radiations breaks molecular bonds within the bacterial DNA, these radiations results in the formation of thymine dimers which can kill the bacteria.
On the basis of the above description, Ultraviolet light stopped the replication process of bacteria is the relevant option.
each sense ( eyes ears nose mouth ect.) sends electrical pules through the nerves or "messages" to the brain. which then processes it and turns it into information so that you can understand what you are seeing, hearing, tasting ect
"Benzaldehyde is an organic compound consisting of a benzene ring with a formyl substituent. It is the simplest aromatic aldehyde and one of the most industrially useful. It is a colorless liquid with a characteristic almond-like odor."
