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Blababa [14]
3 years ago
10

Which nutrient taken as a prenatal supplement is associated with a lower incidence of neural tube defects?

Biology
1 answer:
Sergio039 [100]3 years ago
6 0
Folate is taken as a prenatal supplement has been found to be associated with a lower incidence of neural tube defects

Vitamin B9 ( folate)– Prevents Neural tube defects and Spina Bifida in baby. Vitamin B12 – Promotes blood formation, helps prevent and even fight birth defects that affect the spine and central nervous system

Unfortunately, even high quality prenatal vitamins often contain folic acid instead of the natural folate-forms
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What is apoptosis? A. The proliferation of cytotoxic T-cells. B. The receptor on a cytotoxic T-cell that recognizes MHC molecule
castortr0y [4]

Answer:

Option-C

Explanation:

Apoptosis is a genetically controlled process taking place in the multicellular organisms which is marked with the self-destruction called or programmed cell death.

During apoptosis various physiological and morphological changes take place in the cell such as fragmentation of nuclear DNA, nucleus, shrinkage of cell and mRNA decay.

Since apoptotic cell undergoes cell death which is genetically controlled or programmed by the genes, therefore, apoptosis is known as the programmed cell death.

Thus, Option-C is the correct answer.

8 0
3 years ago
Stem cell and cancer question. Please answer Asap!!
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Metastasis will happen and cancer cells invade nearby healthy cells, tissues, lymph nodes, organs or will migrate to distant organs.

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Explanation:

Cancer cells migrate to other parts of the body via blood and lymphatic system. This is called as metastasis. Cancer cells when becomes tumour they develop their own blood vessels and obtain nutrients from them. Once the tumour gets big it pushes the normal healthy cells of the neighbouring tissues and keeps on spreading.

Stem cells obtained from the embryo can differentiate into any types of cell and when grown in-vitro can dramatically form the three germ layers.

The adult embryo cells are found in less quantity, their role is to repair the tissue they reside in.

4 0
3 years ago
When a cell is in equilibrium with its environment, which of the following processes occurs for substances that can diffuse thro
Ronch [10]

Answer:

The correct answer is A.

Explanation:

Diffusion is the net movement of a substance from a region of higher concentration to a region of lower concentration. The difference in concentration between two environments creates a concentration gradient which is what drives diffusion. Therefore, this movement does not require aid such as extra energy molecules for active transport or integral membrane proteins for directed movement, hence the answer is not B nor C. If the cell is in equilibrium with its environment, it means that the concentration of substances inside the cell is equal to the concentration outside the cell, and any movement that takes place will be random movement of substances across the plasma memberane. Movement in the cell will not cease as the cell is still active. Therefore, the answer cannot be D either.

5 0
2 years ago
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Explanation:

8 0
2 years ago
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baherus [9]

The answer is pancreas :)

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3 years ago
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