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2 years ago

Please give the correct answer to this question

Biology

1 answer:

vlada-n [284]2 years ago

6 0

Answer: Lymphatic system

Explanation:

Not respiratory and excretory for sure.

Not nervous because the diagram doesn't show spinal nerves clearly. So its lymphatic system.

:-)

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lions [1.4K]

Answer:

Explanation:

1morformia

2nervios

3formacion

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3 years ago

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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2 years ago

When the centromeres split in mitosis,what does the sister chromatids’ name change to?

snow_lady [41]

Answer:

During anaphase 2, the chromosomes' centromeres break, and the spindle fibers pull the chromatids apart. The two split portions of the cells are officially known as "sister chromosomes" at this point.

Explanation:

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3 years ago

Which six elements provide most of the mass of the human body? 0 C, N, P S, H, 0 0 C, Mg, P, H, O, N O Mn, Na ), H, Ca, o O Ur,

Natali5045456 [20]

Answer:

H, He. 2, Li, Be, B, C, N, O, F, Ne. 3, Na, Mg, Al, Si, P, S, Cl, Ar. 4, K, Ca, Sc, Ti ... 7, Th, Pa, U, Np, Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Lr ... (Atomic mass is also referred to as atomic weight, but the term "mass" is more ... One molecule of water (H2O) would weigh 18.02 amu (2×1.00797 amu for H + ... 6, C, Carbon, 12.011.

Explanation:

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2 years ago

Which of these is not a feature of the prokaryotic cells?

Troyanec [42]

Answer:

Explanation:

Prokaryotic are simple cells and do not have nucleus.

7 0

1 year ago

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