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Burka [1]
2 years ago
14

Explain why the shape of animals is basically spherical whereas plants and fungi are filamentous

Biology
1 answer:
Reika [66]2 years ago
8 0
Plants and fungi are usually filamentous to increase the surface area in which they uptake their food, and this is advantageous as they raise their surface area for sunlight in photosynthesis.
Conversely, animals are usually round to reduce surface area for loss of water and heat. Unlike plant and fungi, most of their food intake is through the mouth hence not affected by surface area.
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Is the following statement true or false?
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3 years ago
Wind shear can result in the formation of a _______.
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Is a molecule that brings amino acids to the ribosome during translation. __________ is a molecule that brings amino acids to th
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3 years ago
DNA Polymerase helps copy a DNA molecule during the process of what?
PtichkaEL [24]
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Every time a cell divides, DNA polymerase is required to help duplicate the cell’s DNA, so that a copy of the original DNA molecule can be passed to each of the daughter cells. In this way, genetic information is transmitted from generation to generation.

Before replication can take place, an enzyme called helicase unwinds the DNA molecule from its tightly woven form. This opens up or “unzips” the double stranded DNA to give two single strands of DNA that can be used as templates for replication.

DNA polymerase adds new free nucleotides to the 3’ end of the newly-forming strand, elongating it in a 5’ to 3’ direction. However, DNA polymerase cannot begin the formation of this new chain on its own and can only add nucleotides to a pre-existing 3'-OH group. A primer is therefore needed, at which nucleotides can be added. Primers are usually composed of RNA and DNA bases and the first two bases are always RNA. These primers are made by another enzyme called primase.

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A surface representation of human DNA polymerase β (Pol β), a central enzyme in the base excision repair (BER) pathway. Image Credit: niehs.nih.gov

Structure of DNA polymerase

The structure of DNA polymerase is highly conserved, meaning their catalytic subunits vary very little from one species to another, irrespective of how their domains are structured. This highly conserved structure usually indicates that the cellular functions they perform are crucial and irreplaceable and therefore require rigid maintenance to ensure their evolutionary advantage.

7 0
3 years ago
What is the major cause of phytoplankton blooms in the Gulf of Mexico?
3241004551 [841]

Answer:

Excessive nutrients from fertilizer run off.  

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The bloom detected in the Gulf of Mexico on December 13 might be similarly linked to agricultural run-off.

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