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Allushta [10]
3 years ago
10

1. A fossil is determined through radioactive dating to be 1.5 million years old. This is an example of *1 point

Biology
1 answer:
guajiro [1.7K]3 years ago
6 0
C)fossil aging and no i did not use google i knew this from 7th grade

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In colorectal cancer, some tumor suppressor genes are inactive. This is an important factor resulting in uncontrolled cell divis
tresset_1 [31]

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

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3 years ago
True or false: competition between organisms involves both biotic and abiotic factors
Mamont248 [21]
I believe it’s true, since Competition will occur between organisms in an ecosystem when both try to use the same resource and the resource is in limited supply. Animals compete for food, water and space to live. Plants compete for light, water, minerals and root space.
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How will I use the scientific method to become a better medical professional
Lena [83]
It helps you follow procedures accurately in order to get higher, more accurate results and become a better medical professional
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If we put a plant and animal cell into a solution that contains no solutes at all , the solution is______
frosja888 [35]
The answer is isotonic
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Clotting is necessary to mend breaks in circulatory vessels and to prevent extreme losses of blood, but it can also have detrime
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Answer:

Enhance: calcium ions, fibrinogen, serum, thrombin, tissue factor.

Inhibit: heparin, thrombin, coumadin, vitamin K8, PF3, aspirin.

Explanation:

Hope it helps.

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