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soldier1979 [14.2K]
3 years ago
8

What ability of individual stem cells is described by the term totipotent?

Biology
1 answer:
I am Lyosha [343]3 years ago
7 0
Totipotent stem cells have the ability to develop into any kind of cell found in the human body.
When the sperm fertilizes the egg, creates the zygote which is the fist totipotent cell. After that, in the first cell divisions more totipotent cells are produced. Within several days, these totipotent cells produce even more totipotent cells and after four days the cells begin to specialize.
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A sample of DNA contains 120 nucleotides, if 35 nucleotides are Guanine, how many nucleotides are Thymine?
Vitek1552 [10]

Answer:

25

Explanation:

In DNA, Guanine pairs with Cytosine, and Thymine pairs with Adenine. This tells us that there are equal numbers for each Guanine and Cytosine, and Thymine and Adenine. When there's 35 Guanine, there should be 35 Cytosine that goes with it. 120 - 2(35) = 50. The remaining 50 nucleotides are Thymine and Adenine, and since they are the same number, divide 50 by 2. 50 ÷ 2 = 25. There are 25 thymine in the sample of DNA.

3 0
2 years ago
Read 2 more answers
A sample of the tissue from an inflamed, pus-filled area on the lower leg is treated with KOH and stained with GMS. Under the mi
viva [34]

Answer:

chromoblastomycosis

Explanation:

Here is the complete question;. A sample of the tissue from an inflamed, pus-filled area on the lower leg is treated with KOH and stained with GMS. Under the microscope golden brown spheres are visible. What disease are these observations consistent with?

A) pityriasis

B) fungemia

C) chromoblastomycosis

D) mycetoma

E) sporotrichosis

Answer is

C) chromoblastomycosis

Chromoblastomycosis is a chronic fungal infection of the skin and the subcutaneous tissue caused by traumatic inoculation of a specific group of dematiaceous fungi (usually Fonsecaea pedrosoi, Phialophora verrucosa, Cladosporium carrionii, or Fonsecaea compacta) through the skin.

8 0
3 years ago
What is the function of a circulatory system? a) It brings a transport liquid into close contact with all cells in the body. b)
Tomtit [17]

Answer:

The correct answer is a) It brings a transport liquid into close contact with all cells in the body.

Explanation:

The circulatory system helps in bringing the blood which is a transport liquid in close contact with the cells present in our body. This helps in gas exchange between cells and blood. The circulation of blood in the body occurs by the pumping of blood by the heart into arteries, veins, and capillaries.

This circulation of blood plays many other vital functions like transport of nutrients to the cells, transport of waste products from the cell to outside the body, transport of hormones, maintenance of body temperature, etc.  

So all these processes become possible when transport liquid comes in contact with the cells. Therefore the right answer is a.

8 0
3 years ago
Julie was diagnosed with an aggressive tumor of the thyroid. Surgery was performed to remove the thyroid. However, post-operativ
FinnZ [79.3K]

Answer:

c. accidental removal of the parathyroid glands during surgery

Explanation:

Parathyroid gland is found closely situated at the back of the thyroid gland in the human neck region. Regulation of serum calcium levels in the body is a major function of the parathyroid gland through the secretion of a hormone called parathyroid hormone or parathormone.

During the surgery conducted to remove the thyroid gland, it is very likely that the parathyroid glands were accidentally damaged or removed. This most likely led to the non--secretion of parathormone, which is responsible for secretion of calcium in the body, when calcium levels drop.

7 0
3 years ago
How is the population that has experienced selection different from the original population
Viktor [21]
The new population that experienced natural selection is now better fit or more adapted to the environment than the old population
5 0
3 years ago
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