Answer:
macroevolution
Explanation:
Macroevolution is said to be the evolutionary changes that occur on a larger scale beyond a single species as a result of evolutionary forces such as mutation, gene flow, genetic drift. Macroevolution, unlike microevolution, usually results into the emergence of two new species with pronounced changes. The event as illustrated in the question is an example of macroevolution.
Answer:
Solar energy is a form of smart energy that can be used to heat water for homes.
Explanation:
Solar radiation, as it's well known, is capable of providing light and heat to the planet. The characteristics of the energy provided by the sun make it possible the use as an accessible, clean and cheap energy source.
Solar energy has properties that make it a form of smart energy:
- It's a natural energy source
- Clean energy and doesn't represent a risk for the environment.
- It's a renewable energy source.
- It's always available and economical.
Solar panels are devices that have been designed to capture energy from the sun and turn it into a source of energy for households. When talking about smart energy, solar energy represents a useful alternative for home use, including the action of heating water.
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Distilled water is an illustration of a lower osmotic pressure than a particular fluid solution, meaning it has less solute in it compared to a red blood cell. The red blood cells would “want” to be in a normal contraction, which would allow water to leave and exit the red blood cell, meaning the red blood cell would stay normal and not shrink or stretch. In a hypotonic atmosphere, water would blast into the red blood cell in an attempt to reach the symmetry, which would cause the red blood cell to lengthen, and perhaps even burst.
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Answer:
A) DNA polymerase is a directional enzyme that synthesizes leading and lagging strands during replication.
Explanation:
DNA polymerase synthesizes the new DNA strand from the template strands. Both the strands in a DNA molecule act as templates, however both of them have different orientation. It was observed that 3'-5' template DNA produced a new DNA strand continuously in one step. However, 5'-3' template produced new DNA strand in fragments which were joined together later. This observation gave the idea that DNA polymerase is a directional enzyme. It synthesizes DNA in 5'-3' direction so 3'-5' template gave rise to a continuous DNA segment. However, for 5'-3' template, DNA polymerase had to synthesize in opposite direction i.e. 3'-5' which was not possible directly. So the enzyme replicates it in short separate fragments which are later joined by DNA ligase.
<span>Transcription begins after a certain nucleotide sequence called the "promoter". The sequence consists of the following:
1) The AUG start codon is identified
2) Transfer RNA translates the message to the RNA polymerase
3) Ribosomes direct it to the correct segment of the DNA molecule
REMEMBER:
- Nucleotide synthesis = promoter
- Synthesis initiates at one end of the chromosome
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