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kvasek [131]
2 years ago
5

Membrane-bound organelles are NOT found in cells of

Biology
1 answer:
elixir [45]2 years ago
3 0
Animals because that is not part of a cell house
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Client’s labor has progressed to the point where she is 6 cm dilated; however, the fetal head is not engaged. an amniotomy is pe
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The nurse should inspect the perineum. After membrane rupture, the umbilical cord may have bulge into the vagina blocking the fetus from coming out. The perineum area should be checked to confirm that this has not happen. The checking should be done at regular interval until the baby comes out.
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3 years ago
Why does the oxygen atom in a water molecule have a negative charge
rodikova [14]

In water molecule the electrons between the oxygen and the hydrogen are shared, but the sharing is not equal. Oxygen pulls electrons slightly towards itself. Therefore, the electrons are more near the oxygen, making that part of molecule(oxygen part) slightly negative. Since the electrons are not near the hydrogen so, that part of the molecule is slightly positive.

8 0
3 years ago
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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

3 0
3 years ago
RNA is produced by
Studentka2010 [4]

Answer:

Explanation:

rna is produced in the transcription stage of protein synthesis whereby complementary base pairing occurs

8 0
3 years ago
AYUDAAA
Lemur [1.5K]

Answer:

11)El ciclo del agua, conocido científicamente como ciclo hidrológico, se refiere al intercambio continuo de agua en la hidrosfera, entre la atmósfera, el agua del suelo, la superficie, el agua subterránea y las plantas. La ciencia que estudia el ciclo hidrológico es la hidrología.

12)Sabems que las etapas del ciclo hidrológico  son las siguientes:

Evaporación

Condensación

Precipitación.

Las implicaciones que tienen para la vida cada una de las etapas son:

Evaporación, se reduce el nivel de los ríos, los lagos pequeños se seca, y se eleva la temperatura del ambiente.

Condensación, Es el proceso en el cual se forman las nubes, por lo que la luz solar disminuye.

Precipitación, produce nuevamente el aumento de los niveles de rios y lagos, y la disminución de la temperatura.

Explanation:

5 0
3 years ago
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