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scoundrel [369]
3 years ago
14

What scale is used to measure the intensity of an earthquake?

Biology
2 answers:
Slav-nsk [51]3 years ago
5 0
Pretty sure its Ph scale i did a question like this once but i cant remember....its either Ph or richer
igor_vitrenko [27]3 years ago
4 0

The answer is (D) Richter scale.

The pH scale is used to measure acid/alkalinity

The Moh's scale is used to find out how hard a mineral is.

The Kelvin scale is a unit of measure of temperature.

Therefore, the only answer is D.

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Alternation of generations in plants permits(1 point) neither mitosis nor meiosis. only meiosis. both mitosis and meiosis. only
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Alternation of generations in plants permits both mitosis and meiosis but at different stages.

The zygote will undergo many rounds of <u>mitosis</u> and give rise to a diploid multicellular plant called a sporophyte. Specialized cells of the sporophyte will undergo <u>meiosis</u> and produce haploid spores.

Hope it helps,

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tresset_1 [31]

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(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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