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hichkok12 [17]
3 years ago
11

Oct4 is an embryonic stem cell specific transcription factor. ESCs grown in petri dishes are fed media that contain basic fibrob

last growth factor (bFGF) which keeps the ESCs undifferentiated. They examine Oct4 mRNA levels in human ESCs (hESCs), hESCs with exogenous miR-223 (micro RNA 223), hESCs with exogenous miR-223 that do not have bFGF in the media, and hESCs without bFGF but with miR-223 inhibitor. Based on this data, what is the relationship between miR-223 and ESC differentiation?
Biology
1 answer:
GarryVolchara [31]3 years ago
4 0

Answer:

miR-223 inhibits the expression of the fibroblast growth factor (bFGF) gene, and thereby ESCs cells maintain their undifferentiated state .

Explanation:

Non-coding RNA (ncRNAs) are molecules that regulate gene expression, thereby playing important biological functions in cell differentiation, cell cycle, apoptosis, etc. MicroRNAs (miRNAs) are a type of ncRNAs capable of controlling gene expression patterns by regulating mRNA stability and by suppressing their translation into proteins. It has been shown that miRNAs function by imperfectly base-pairing with the 3′ UTR of target mRNAs (Pillai et al. 2005).

Citation:

R. S. Pillai, S. N. Bhattacharyya, C. G. Artus,   T.  Zoller, et al. (2005). Inhibition of translational initiation by Let-7 MicroRNA in human cells. Science, 309(5740), 1573-1576.

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Answer:

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Explanation:

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Which of the following contributes to the desertification of the land?
Mrac [35]

Respuesta:

B. pastoreo excesivo de animales de granja

Porque son lugares secos.

Explicación:  

Las políticas e infraestructuras que promueven la agricultura en las tierras de pastoreo que no pueden mantener sistemas viables de cultivo, contribuyen a la desertificación. La mayoría de las áreas de tierras secas (el 65%) son tierras de pastoreo que son más adecuadas para el pastoreo sostenible que para el cultivo.

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3 years ago
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Which of the following parts of a Chick-Fil-A meal is an example of a lipid?
Shalnov [3]
Hello,

A LIPIDS is a fatty acid, this also includes natural oils and waxes. Usually meat has lipids.

Choice B is incorrect because fries don’t have meat which don’t have any lipids

Choice C is incorrect because potato have no meat so there is not any lipids

Choice D is incorrect because bread has no meat so there is not any lipids

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A) The chicken in the chicken sandwich

Hope this helps!!
Brainliest??
7 0
3 years ago
ASSIGNMENT
MissTica

Answer:

Food refers to any nutritious substance whereas diet refers to the food eaten by organisms daily.

Explanation:

1. Food refers to any nutritious substance that an organisms eat in order to survive and maintain growth whereas diet refers to the sum of food that is consumed by an organism.

2. Malnutrition refers to a condition that occurs from eating a diet which does not supply a healthy amount of nutrients to our body whereas hunger refers to a feeling of discomfort that is caused by lack of food.

3. No, it is not possible to be over-nourished and under-nourished at the same time because a person can attain one condition at a time whether he can be over-nourished or under-nourished.

4. The three elements of food security are availability, access and consumption of food. Availability of food means having sufficient quantities of nutritive food available to a person, access means having sufficient resources to have access to the food and consumption means having taking sufficient amount of nutrients and the ability to absorb and use nutrients in the body.

5. 2,110 calories are taken by consuming 345g of carbohydrate, 80 g of protein, 45g of fat and 12g of alcohol.

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Scientists classify clams as consumers. Which observation about clams provides the strongest evidence for this classification?
Andre45 [30]

Answer:

They eat plants so since they don't make their own food they are a consumer

Explanation:

clams eat algae and algae is a producer it means that primary consumer

5 0
3 years ago
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