The nucleic acids (specifically DNA and RNA) are the macromolecule that provides the blueprint for living things by storing and transmitting genetic information.
This is because the genetic information in our bodies is stored in our DNA (deoxyribonucleic acid) undergoes the processes of transcription (where it is transformed into mRNA) and translation (where the mRNA is translated into a polypeptide or protein). These two processes allow the information encoded in our genes to be expressed throughout our bodies through the usage of another macromolecule, the proteins.
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Answer:
e) S phase
Explanation:
The cell cycle is divided into various phases. These are in accordance with their order:
1. phase
In this phase, the cell grows in size and doubles its organelles. This phase is in fact a preparatory phase for cell division.
2.S phase
In this phase, the cell doubles its nuclear material (DNA). As cell divides into 2 daughter cells in mitosis, therefore it is necessary for cell to double its genetic material (DNA) which takes place in S phase. This genetic material is equally distributed among the daughter cells.
3. phase
In this phase, the cell further increases its store of proteins and organelles and prepares for the next phase i.e. M phase in which cell divides.
4.M phase
It consists of 2 processes i.e. mitosis and cytokinesis. In mitosis, the cell divides its genetic material (DNA) and in cytokinesis, the cell divides its cytoplasm resulting in 2 daughter cells.
phase
This is an inactive stage of cell cycle. In this stage cell does not divide further but remains quiescent. It performs its normal function in this phase. This phase is not a feature of all cells. Some cells like neurons (nerve cells) enter Go phase and remain there permanently whereas epithelial cells (cells lining body surfaces) do not enter Go phase and continuously divide. Cells enter Go phase after going through phase.
Back to the question,
If interval A contains half as much DNA as interval C then it implies that interval A is phase as in this phase of cell cycle, cell increases its size, and organelles but does not double its DNA content. It is further understood that interval C is phase as it contains double the DNA amount as in interval A. It can be understood that B interval is S phase, as in S phase cell doubles its DNA content and this phase occurs in between and phases.
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Answer:
The earths crust is composed by a variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. The crust occupies less than 1 percent of the earths volume.