Answer:
100 units
Explanation:
The parent cell holds 200 units of DNA. During the process of cell division, this amount is distributed between the resulting daughter cells, with each cell obtaining half of the DNA present in the original cell.
As mitosis yields two daughter cells, each one will receive 100 units of DNA.
Answer: Transcription and translation enable tRNA and rRNA molecules to produce a diverse range of polypeptides.
Explanation:
DNA comprises the genetic instructions for protein synthesis, and this data is transmitted to mRNA during transcription. This initial phase of gene expression entails copying a portion of DNA into RNA (mainly mRNA) facilitated by the enzyme RNA polymerase.
Both DNA and RNA are types of nucleic acids that utilize nucleotide base pairs as a complementary code. During transcription, an RNA polymerase reads a DNA sequence, generating a corresponding, antiparallel RNA strand termed a primary transcript.
A notable variation exists among genes, leading to numerous distinct mRNA molecules. However, ribosomes, made up of rRNA, play a crucial role during translation. This phase occurs in the cytoplasm or ER, where proteins are synthesized after the DNA-to-RNA transcription within the cell's nucleus. This entire process is recognized as gene expression.
Among the three forms of RNA, tRNA is the smallest, consisting of only 75 to 95 nucleotides, and functions to transport specific amino acids to the developing polypeptide chain. It can be concluded that mRNA enhances the variety of polypeptide structures by carrying essential information regarding their synthesis.
In response to the claim, you could refer to a principle of cell theory, stating that cells are the fundamental unit of life, and critically, all cells arise from pre-existing living cells.
