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ohaa [14]
3 years ago
7

Which of the following is a true statement about tectonic plates?

Biology
1 answer:
Nataly [62]3 years ago
4 0
I would go with D as it is closest to correct. Every part of the surface of the Earth is a tectonic plate though. The plates vary in thickness, but all of the surface of the Earth is made up of tectonic plates, including the parts under the ocean. Technically, the Earth's landmass does not rest on the tectonic plates, it IS the tectonic plates, but it is the closest to correct here in my opinion.
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N your own words, describe why animals are eukaryotic organisms, and why we say their cells are advanced and
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Answer:

The animal kingdom is unique among eukaryotic organisms because most animal tissues are bound together in an extracellular matrix by a triple helix of protein known as collagen. Plant and fungal cells are bound together in tissues or aggregations by other molecules, such as pectin.

Explanation:

The ability to maintain different environments inside a single cell allows eukaryotic cells to carry out complex metabolic reactions that prokaryotes cannot. In fact, it's a big part of the reason why eukaryotic cells can grow to be many times larger than prokaryotic ones.

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3 0
2 years ago
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Red algae can grow at deeper depths when compared to other algal groups because they are adapted to absorb blue light, which is required for photosynthesis.

Explanation:

Red algae, also known as rhodophyta, usually occur in the depths of seas. This is because of a unique adaptation in their structures, due to the presence of phycoerythrin - a pigment that reflects light that is red, while equipping the algae to absorb blue light. Hence, the algae appears red in colour.

All plants (including algae) require sunlight to be able to synthesize their own food through the process of photosynthesis. For plants that live in the oceans, the sunlight penetrating the waters is the only source of radiation in this regard.

The blue light in the radiation spectrum has the characteristic features of having the highest energy, as well as the shortest wavelength. This makes it the most energetic section of light, enabling it to penetrate to the ocean depths.

The phyrcoerythrin in the red algae absorbs this blue light for photosynthesis. This process occurs even at depths upto 500 feet, hence becoming an adaptive advantage for red algae to be able to survive at greater depths.

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3 years ago
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