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Stella [2.4K]
3 years ago
14

A malignant tumor has begun to allow cancers cells to enter the _____.

Biology
1 answer:
Sholpan [36]3 years ago
5 0

A malignant tumor has begun to allow cancers cells to enter the brain. Maligant tumors divide into primary tumors which start with the brain and secondary tumors which scatter from somewhere else which is called brain metastasis tumors.

There are symptoms which produce by brain tumors. For example, a problem with vision, vomiting, mental changes and headache. The important problem may include having difficulty in walking. The cause of brain tumor is unknown but the most risk factor is that it may be inherited neurofibromatosis, ionizing radiation and vinyl chloride.

Medulloblastoma is the type of malignant tumor in children. The medical examination which is computed by tomography can diagnose it. Treatment of a malignant tumor is chemotherapy, radiation therapy and surgery.

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You are analyzing a human pedigree for a new disease and discover that the disease occurs with the same frequency in both sexes
Natasha_Volkova [10]

Answer:

The correct answer is A. autosomal recessive

Explanation:

In an autosomal disease, the mutation occurs in the autosomal chromosome, not in the sex chromosome. In autosomal recessive disease if both the defected allele from parent comes in the child then only the child would be affected by the disease. If the offspring have single defected allele than he is said to be a carrier.

So as the defect is not in sex chromosome the disease will occur in the same frequency in both the sexes and if parents are carriers which means they are not affected by disease than 25% offspring can have the disease because out of four offspring one can get both the defected allele, one from each parent. So the correct answer is A.

6 0
3 years ago
How can one species eventually change into something completely different over the course of millions of years?
MrRissso [65]

One species eventually changes into something completely different over the course of millions of years. This can be described using the evolution theory. The evolutionary process of species shows how one population of a species changes over time to the point where that population is distinct and can no longer interbreed with the parent population. Hence one species is changed into another over o period of time. Speciation is an evolutionary process by which a new species comes into being.

This theory of evolution was proposed by Charles Darwin.

3 0
3 years ago
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son4ous [18]

Answer:

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Explanation:

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4 0
3 years ago
Is transcription the location of translation and protein synthesis
Ivahew [28]
The ribosome is the location of translation, while transcription always takes place in the nucleus.
8 0
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Insulin is a protein that is vital for human survival and is made by special cells in the pancreas. Which organelle in these cel
vlada-n [284]

Answer:

the endoplasmic reticulum

Explanation:

it is the endoplasmic reticulum and the ribosomes of the specialized cells in the pancreas that make insulin

6 0
3 years ago
Read 2 more answers
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