When exposed to the mucous membranes on the face, biohazards can contaminate the eye as well as enter the circulation and stomach.
- Biological compounds that endanger the health of living things, particularly humans, are referred to as biohazards, sometimes known as biological hazards.
- Medical trash or samples of microorganisms, viruses, or toxins (from a biological source) that may be harmful to human health are examples of biohazards.
- Bacteria, viruses, parasites, and molds or fungi are examples of biological health risks.
- When they come into touch with skin, are eaten, or are inhaled, they can be harmful to human health.
- They have the potential to spread diseases such parasite infections, tetanus, lung infections, and food poisoning.
- The method via which a person can come into touch with a dangerous material is referred to as an exposure pathway. There are three primary exposure routes: direct touch, ingestion, and inhalation.
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Answer:
what in the chemical weathering
Answer:
Objective Lens Magnification = ×100
Explanation:
In a microscope, the ocular (eyepiece) lenses are usually to a magnification of ×10, meaning that it magnifies the image 10 times. While the standard objective lenses have magnifications of ×4, ×10, ×40, and ×100.
In order to work out the total magnification, the individual magnifications of the ocular and objective lenses have to be known, after which a simple multiplication of both magnifications will give the total magnification used.
Total Magnification = (eyepiece lens magnification) × (objective lens magnification)
1000 = 10 × obejcetive lens magnification
Dividing both sides by 10
Objective lens magnification = 1000 ÷ 10 = 10
∴ Objective lens magnification = ×100
Answer/Explanation:
(1) a mutation in the coding region, resulting in an inactive protein
To check to see if there is a mutation, you could extract the DNA from the cancer cells and then perform PCR to amplify the gene of interest. You could then perform sanger sequencing and compare the sequence to the normal gene to see if a mutation is present. To test the effect of the mutation, you would want to see if an active protein has been formed.
To see if a normal sized protein has been formed, you could perform a western blot, comparing the protein band to the WT protein band. If the protein is absent or much smaller, it is likely not a functional protein.
(2) epigenetic silencing at the promoter of the gene, resulting in reduced transcription.
To check for changes in the epigenetic landscape of the promoter, you could perform chromatin immunoprecipitation by extracting the chromatin from the tumour cells and using antibodies for different chromatin marks to see what has changed between the normal cells and the tumor cells. E.g. H3K9me3, H3K27me3. You would perform a pull down with the antibody of interest and then PCR for your promoter to specifically look at changes at that gene compared to normal cells. To test DNA methylation, you could perform bisulfite sequencing.
To see how transcription is affected, you could extract RNA from the tumor and normal cells, and compare the levels of RNA between the two samples by qRT-PCR
Answer:
<em>Reputed
</em>
Explanation:
A food source is reputed because it sells original food products and also that is not stale.
In a restaurant, if the food products should be purchased from a reputed source as it will ensure that the items are not stale and also the customers will be happy to know that the food that is being served to them is not made of rotten items and also collected from a renowned source. Thus, the purchase also increases.
