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vova2212 [387]
3 years ago
14

..HeLp......plEaSe..... IM PoOpEd iDoNtKnOw

Biology
2 answers:
Thepotemich [5.8K]3 years ago
7 0
In stem cell transplants, stem cells replace cells damaged by chemotherapy or disease or serve as a way for the donor's immune system to fight some types of cancer and blood-related diseases, such as leukemia, lymphoma, neuroblastoma and multiple myeloma. These transplants use adult stem cells or umbilical cord blood. have a good day :)
alexandr1967 [171]3 years ago
5 0

Answer:

Stem cell is the special type of cell that can differentiate to give any cells in the body. Cell therapy nowadays are using stem cell in order to replace damaged tissue.

Explanation:

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A catastrophic disturbance occurs over a long period of time <br> Atrue<br> Bfalse
Alex Ar [27]
I think the answer is b.) false
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3 years ago
On his visit to the Galapagos Islands, Charles Darwin discovered several species of finches that varied from island to island, w
Eva8 [605]

Answer:

food sources

Explanation:

Because food sources varied from island to island, the finches with the best beak size and shape for the available food survived and reproduced better that those with beaks less suited to that particular island. Over time, the finches evolved into separate species.

8 0
3 years ago
What is the term for a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concent
Andrej [43]

Answer: OSMOSIS

Explanation:

OSMOSIS is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane. It's very useful in biological systems and is dependent on the following factors:

- osmotic pressure and

- osmotic gradient.

Osmotic pressure: this is defined as the least pressure that needs to be applied in a solution to discontinue the transfer of solvent across a semipermeable membrane.

Osmotic gradient: this compares the concentration of solutions divided by a semipermeable membrane. The concentration of a specific particle dissolved in a solution is known through osmotic gradient.

6 0
3 years ago
Define mutation and compare gene mutation and chromosomal mutation
uysha [10]

Answer:

In biology, a mutation is an alteration in the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA.

Explanation:

5 0
3 years ago
3. Los conductos linfáticos, a medida que se alejan de los tejidos corporales:
inn [45]

Answer:

b- Se hacen más anchos.

Explanation:

Los conductos o vasos linfáticos son tubos que transporta tanto al líquido linfático (linfa) como glóbulos blancos que fluyen a través del sistema linfático. Estos conductos se inician en el intersticio y terminan en conductos de mayor tamaño que desembocan en la base del cuello, entre las venas yugular interna y la subclavia. A medida que va entrando en los tejidos, los conductos linfáticos se van haciendo cada vez más angostos y finos, convirtiéndose finalmente en capilares linfáticos, donde las sustancias que no pueden penetrar los vasos sanguíneos son recogidas por estos capilares.

5 0
4 years ago
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