Answer:
A. amino acids
Explanation:
Protein in our diets comes from both animal and vegetable sources. ... The digestive system breaks all proteins down into their amino acids so that they can enter the bloodstream. Cells then use the amino acids as building blocks to build enzymes and structural proteins.
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When the sun reaches the end of released into space, forming a life cycle, the expanded part will be Planetary nebula.
<u>Explanation:</u>
Planetary nebula formed after when the external layer is shredded due to running out of fuel so that it can burn. This external layer of gas expand into the space, the shape of nebula can often be ring shaped or even a bubble. At the centre of this nebula it has the shinning left over middle part of the star. This star can also be seen. The temperature of the nebula is 100000C. The planetary nebula last for about 10000 years between its formation and the recombination.
Answer:
C) A changed to G in the first position of the codon.
Explanation:
In the translation of DNA, triplets or codons of mRNA (a group of three nucleotides) are read according to a genetic code, to build proteins.
Proteins are composed of amino acids. In the translation process, each codon codes for an particular amino acid according to the genetic code as illustrated in the DNA codon table (attached here).
In this table we can see that if the first position of any of the codons coding for Threonine ( ACT, ACC, ACA, ACG) is changed for G, Adenine is going to be encoded instead of threonine.
The evolution of H. floresiensis is an example of island dwarfism.
Explanation:
H. floresiensis is a species of hominid. It differs significantly than the other hominid species in size though, as it appears to be a dwarfed version of its ancestors and close relatives. Its alleged ancestor is literary twice taller, which brings in the question as to what has triggered such an evolutionary adaptation.
This hominid species lived only on a relatively small island, in isolation. The resources are very limited, and the climate is warm and humid all year around. As seen in many species of animals, when individuals get into such an environment, they tend to experience either island dwarfism, or island gigantism. The island dwarfism tends to be common among large and medium sized species, while the island gigantism tends to be more common among the small species.
When the ancestors of H. floresiensis ended up in this environment, it was advantageous for them to smaller. The reason for that is that smaller bodies require less nutrition, and are also producing less heat.
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