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Diano4ka-milaya [45]
2 years ago
15

What kind of stem cells are blood stem cells

Biology
1 answer:
Mekhanik [1.2K]2 years ago
5 0
Most hemato<span>poietic stem cells are found in the bone marrow,but some cells,peripheral blood cells are found in the bloodstream.

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Why are chloroplasts more on one side of a cell than the other
vaieri [72.5K]

You would be referring to the <em>plant </em>cell.

Answer:

Chloroplasts may be seen on all six sides of a plant cell, which is a three-dimensional entity with typically moderately rounded corners (not in the centre because a big central vacuole fills a very large part of the volume). Chloroplasts are constantly being rearranged by the cell since they are not set in place. Chloroplasts are typically located close to so-called periclinal cell walls, which are oriented in the same 2D orientation as the leaf surface under low light. Chloroplasts seem to "escape" to the anticlinal walls in bright light. Better light harvesting in low light by exposing every chloroplast to light and photoprotection by mutual shading in strong light are likely the fitness benefits provided by this behavior. In the dark, chloroplasts also gravitate toward the anticlinal walls. Thin leaves of submerged aquatic plants like Elodea can be used as microscope specimens to observe chloroplast motions. One can gauge how much light gets through a leaf in land plants. What I just said concerning the top layer(s) of leaves' "palisade parenchyma cells" is accurate. Most of the chloroplasts are found in these cells. Numerous cells in the spongy parenchyma under the palisade layer lack well marked peri and anticlinal walls.

<h2>How did plant cells incorporate chloroplasts in their DNA?</h2>

Chloroplasts must reproduce in a manner akin to that of some bacterial species, in which the chloroplast DNA is duplicated first, followed by binary fission of the organelle (a kind of protein band that constricts so that two daughter organelles bud off). As a result of some chloroplast DNA actually being integrated into the plant genome (a process known as endosymbiotic gene transfer), it is now controlled in the nucleus of the plant cell itself.

8 0
1 year ago
In a praticular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull
steposvetlana [31]
You are correct :) Red coat's genotype would be tt and the black bull's genotype would be Tt. You put those in a punnett square, and you'd get 2 tt's and 2 Tt's. Hope this helps! :D
6 0
3 years ago
What statement correctly explains why moist-heat is more effective than dry-heat for sterilization purposes?
tino4ka555 [31]

Answer:

Dry heat will always be a lower temperature than moist hea

Advantages of Dry Heat sterilization

Reliable, nontoxic.

Low cost and is easy to install.

As the instrument remains dry after sterilization, there are no chances of corrosion.

Not harmful to the environment.

Disadvantages of the Dry Heat Sterilization

It requires more time for sterilization.

Exposure to the higher temperature may be harmful to the instrument.

Explanation:

3 0
2 years ago
As the temperature of a star is increased, what happens to the wavelength?
puteri [66]
The wavelengths gets bigger
5 0
3 years ago
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Trevor watched as the barometer on his front porch showed a change in air pressure.
Artemon [7]

Answer:

The answer is C.

Explanation:

6 0
3 years ago
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