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Describe meiosis as a reduction division in which the chromosome number is halved from diploid to haploid resulting in genetically different cells (details of the stages of meiosis are not required)
1 Answer State that during mitosis, the copies of chromosomes separate, maintaining the chromosome number in each daughter cell
1 Answer State that the exact replication of chromosomes occurs before mitosis
1 Answer State the role of mitosis in growth, repair of damaged tissues, replacement of cells and asexual reproduction
1 Answer Describe mitosis as nuclear division giving rise to genetically identical cells (details of the stages of mitosis are not required)
1 Answer State that in a diploid cell, there is a pair of each type of chromosome and in a human diploid cell there are 23 pairs
1 Answer Describe a diploid nucleus as a nucleus containing two sets of chromosomes
1 Answer Explain that most body cells in an organism contain the same genes, but many genes in a particular cell are not expressed because the cell only makes the specific proteins it needs
1 Answer Explain how a protein is made, limited to: • the gene coding for the protein remains in the nucleus • messenger RNA (mRNA) is a copy of a gene • mRNA molecules are made in the nucleus and move to the cytoplasm • the mRNA passes through ribosomes • the ribosome assembles amino acids into protein molecules • the specific sequence of amino acids is determined by the sequence of bases in the mRNA (knowledge of the details of transcription or translation is not required)
1 Answer Explain that DNA controls cell function by controlling the production of proteins, including enzymes, membrane carriers and receptors for neurotransmitters
1 Answer
Sourav Pan
Sourav Pan
Sourav Pan
Sourav Pan
Sourav Pan
Sourav Pan
Sourav Pan