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marin [14]
3 years ago
11

Why do tumor cells need blood vessels to continue to grow

Biology
1 answer:
melomori [17]3 years ago
3 0

Answer:

Like healthy cells, cancer cells cannot live without oxygen and nutrients. So they send out signals, called androgenic factors, that encourage new blood vessels to grow into the tumor. This is called parthenogenesis. Without a blood supply, a tumor can't grow much bigger than a pin head.

Explanation:

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Traits, conditions, or diseases that are passed down through families through one of the X or Y chromosomes.
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2 years ago
If a ligand were stuck in the g-protein-linked receptor, what would be the effect to the cell?.
aleksandr82 [10.1K]

The pathway would be over active, If a ligand were stuck in the G-protein-linked receptor.

<h3>What usually happens when a ligand binds to a receptor protein?</h3>

When the ligand attached to the internal receptor, a change occurs that shows at DNA-binding site on the protein.

The ligand-receptor complex moves into the nucleus where it binds itself to regions of the chromosomal DNA. It promotes the initiation of the process of transcription so we can conclude that if a ligand were stuck in the G-protein-linked receptor, the pathway would be over active.

Learn more about ligand here: brainly.com/question/1869211

4 0
2 years ago
Which structures in the cell are proteins assembled in?
Reil [10]

The nucleolus is where the assembly of the ribosomes begin. Proteins are assembled on ribosomes. Ribosomes produce proteins by following coded instruction of the DNA. Eukaryotic cells contain an internal membrane system known as the endoplasmic reticulum.

3 0
3 years ago
Define independent assortment within the framework of meiosis. What impact does homologous recombination have on the principle o
Paul [167]

Answer:

The law of independent assortment states that the different genes get separated independently of each other and gets assorted into gametes to produce different combination of genes.

It was formulates by famous scientist G. Mendel based on his work on peas.

For example, in a traditional dihybrid cross of true breeding round and yellow seed plant with wrinkled and green seed plant, F2 generation show four different combinations of phenotype:

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It shows that genes for round and yellow were independently inherited and genes for wrinkled and green were independently inherited. Else, new combinations could not be observed.

Homologous recombination is an event that takes place in prophase I during meiosis. The genetic material is exchanged between the non-sister chromtids of homologous chromosomes. It adds into the genetic variation within a population by producing more combination of genes in the gametes.

It does not violate the law of independent assortment as the genes were independently assorted. It only helps in producing more combinations of genes.

6 0
3 years ago
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