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Sveta_85 [38]
3 years ago
11

What is a nucleotide?

Biology
1 answer:
Olenka [21]3 years ago
7 0

Answer: C

Explanation:

any of several compounds that consist of a ribose or deoxyribose sugar joined to a purine or pyrimidine base and to a phosphate group and that are the basic structural units of nucleic acids (such as RNA and DNA)

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Decide whether the discovery should be considered reasonable or surprising:
Readme [11.4K]

Answer:

A. Surprising.

Explanation:

The above scenario is completely surprising because there are 10 planets in solar system and considering all the orbit approximately in the same plane. But amazingly half (five) of the planets orbit counterclockwise, while remaining five planets orbit clockwise (opposite direction).

Reasonably, all planet should be orbit in same direction but it's surprising that in a same solar system half are orbit clockwise and half are anticlockwise.

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3 years ago
The B horizon is also called the _____.
scZoUnD [109]
Answer: B soil is also called the SUBSOIL.

Soil horizon consists of layers of soil that differ physically. It contains 3 or 4 layers or horizon such as O horizon, A horizon, B horizon, C horizon and R horizon. B horizon is also referred as subsoil. It is yellowish to brown in color. It consists of mineral layers such as silicate clay, iron, aluminium, gypsum, silica, humus, etc. The roots of a plant penetrates through the subsoil.
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3 years ago
An arid region with few plants describes which climate or biome? Options: chaparral tundra desert rainforest
Semmy [17]

the answer is dessert

4 0
3 years ago
Why does the texture of an igneous rock generally tell you more about how it formed than about its mineral composition?
7nadin3 [17]

Answer:

The texture of an igneous rock is dependent on the rate of cooling of the melt: slow cooling allows large crystals to form, fast cooling yields small crystals.In addition to texture, igneous rocks may are classified according to their chemical composition.

Explanation:

4 0
2 years ago
In which phase do sister chromatids line up in the middle of the cell, (in 'single-file', without a homologous partner)? Group o
ipn [44]

Answer:

The correct answer is ''METAPHASE I.''      

Explanation:

Metaphase I is the stage in which chromosomal studies are generally performed, because its morphology is very clear. The chromosomes, moved by the mitotic spindle, are placed in the center, between the two asters and form the so-called metaphase plate, in which the chromosomes are positioned in such a way that the kinetochore of each sister chromatid are oriented towards the opposite poles. Keeping chromosomes on the cell equator implies a balance between the forces of the microtubules that tend to move the kinetochores toward opposite poles, so positioning them in the center involves a great deal of energy.In each kinetochore, between 20-30 microtubules can be anchored, which exert traction force towards the pole from which they come, so the metaphase plate is maintained by the balance between the opposite forces of the poles on the chromosomes, which hold their sister chromatids by centromeric cohesin.

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2 years ago
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