The mesosphere is coldest, reaching temperatures of -90 degrees Celsius
The answer is letter B. because he is interested in designing machines that help people with disabilities. Becoming a biomedical engineer is one of his choice and probably he was inspired by people with disabilities because of his passion in writing also. In order for him to help these people, he decided to become a biomedical engineer to create technologies to lessen the burden of these people.
<span>Out of the following given
choices;</span>
A. The Geiger counter
being used to detect radiation is broken.
B. Two or more samples
we accidentally swapped, causing confusion.
C. A virus contaminated
the reaction in which the probe was made.
D. The human genome
might contain at least one viral gene.
The answer is D. This means that the viral DNA inserted itself
in the human tissue DNA aand became a prophage. A prophage is a latent form of
viral infection where the inserted viral DNA has no interference with the host
cell biochemical processes. The prophage will be present in the daughter cells
of the host cells.
The question is incomplete. Th ecomplete question is as following:
All of the following protect the skin and mucous membranes from infection EXCEPT
A) multiple layers of cells.
B) tears.
C) saliva.
D) HCl.
E) the "ciliary escalator."
Answer: D) HCl.
Explanation:
- The epidermis, the outer layer of the skin provides waterproofing and serves as a barrier to infection and other laers also sustain any type of injury.
- Tears wash out foreign bodies which enter the eye. In addition, tears contain a substance called lysozyme which has an antibacterial function and works to prevent microbial invasion and infection.
- Saliva protects against infection, especially via the innate immune system. This mechanism is an important first-line protection against bacterial and viral infection
- The mucociliar escalator is within the conducting airways and is composed of mucus and cilia that transfer the mucus up and out of the lungs where it can be removed by coughing or swallowing,
Whereas HCL helps in the digestion process.
Hence, the correct option is D.
Fat is used as a form of energy when the body really needs it. where as an enzyme is used to speed up a reaction in the body or might be needed to start a reaction in a body.
