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Elis [28]
3 years ago
7

A type of collagen that forms a very fine network of fibers in which the stem cells are interspersed is called A. elastin. B. re

ticulin. C. yellow marrow. D. periople.
Biology
2 answers:
Sergeeva-Olga [200]3 years ago
5 0
The answer would be B, reticulin.
Scorpion4ik [409]3 years ago
3 0

Answer:

The correct answer is option B-reticulin.

Explanation:

Stem cells are undifferentiated cells which show the ability of self-renewing and differentiating into more tissue-specific cells. The body an use these stem cells whenever it needs.

They are found in a specific area of each tissue called  "stem cell niche" where they are surrounded by cell-matrix proteins like glycoproteins, proteoglycans and reticulin.

Reticulin fibres are the connective tissue which is produced by the fibroblasts and is made up of type III collagen which is present in bone marrow, lymphatic tissues.

Thus, B-reticulin is the correct answer.

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A colleague gives you two tubes containing membrane fractions from an animal cell lysate. One tube contains the plasma membrane
OLga [1]

Answer:

B) a higher protein to lipid ratio.

Explanation:

The cell membrane of eukaryotes is known to be a phospholipid bilayer with embedded proteins.  This implies that the first tube will contain a higher amount of lipids.

The membrane of the mitochondria is slightly different from the cell membrane in which its protein to lipid ratio is higher, containing a large number of integral proteins.

6 0
3 years ago
3. The mechanism in which organisms best suited for their environment survive<br> and reproduce.
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The mechanism in which organisms best suited for their environment survive

and reproduce <u>NATURAL SELECTION.</u>

<u></u>

Explanation:

When individuals in a population compete for resources or live in their environment, the individuals with the slightest advantage over the others have an increased chance of reaching maturity and  reproducing to passing down their genes to the next generations.

Natural selection works on the variations of the population to ‘select’ the best alleles of genes in the population that offer an advantage in ‘survival for the fittest’. This how natural selection fits a population to its environment. The greater the variation within a population, the higher its capacity to adapt to changes in the environment.

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For more on natural selection check out;

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#LearnWithBrainly

5 0
3 years ago
Which activity is an effective solution for keeping the oxygen cycle stable?
postnew [5]

Answer:

D

Explanation:

because trees take in carbon dioxide and produce oxygen.

5 1
3 years ago
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To gather data or information or to observe. HOPE THIS HELPS!! IF SOO LET ME KNOOW


7 0
3 years ago
How does geographic distribution of organisms support evolutionary theory?
Serga [27]
Because the organism is distributed across the world, and isn't seen anymore, scientists can conclude tat they must have evolved. They can compare one species to the fossils they may have found, and determine that they were related. Then by looking at the species on another part of the world compare the same fossils to other animals and determine that they are similar, sharing a common ancestor.
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