OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sufficient nutrition
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Full expression of all genes
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Specialized functions at different stages of embryo development
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Expression of some genes with suppression of other genes
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Detailed explanation-1: -In order for a cell to differentiate into its specialized form and function, it need only manipulate those genes (and thus those proteins) that will be expressed, and not those that will remain silent. The primary mechanism by which genes are turned “on” or “off” is through transcription factors.
Detailed explanation-2: -The process of differentiation occurs when different genes in the genome are expressed or repressed. This process occurs through the signal transduction pathway, a way of transmitting extracellular signals to cause changes in cell function.
Detailed explanation-3: -Gene regulation makes cells different Gene regulation is how a cell controls which genes, out of the many genes in its genome, are “turned on” (expressed).