Cell Biology PDF

## What is the definition of cell biology - An experimental science based on studying the cell and its structure - As unit of life, cell ages - Cell differentiation and division is needed for development organisms ## What are the three divisions that living organisms diverged from - Bacteria - Eu...

## What is the definition of cell biology - An experimental science based on studying the cell and its structure - As unit of life, cell ages - Cell differentiation and division is needed for development organisms ## What are the three divisions that living organisms diverged from - Bacteria - Eucarya - Archaea ## Range of genes in bacteria and archaea 1000 to 6000 genes ## How many chromosomes do humans have 3 billion chromosomes ## How many genes do humans have 30k genes ## Mitochondria can be inherited from Mother ## What role does er play in membrane biogenesis The ER makes phospholipids for membrane ## Genetic information is stored in DNA ## Genetic information is stored in DNA and passed on to Daughter cells ## Macromolecular structures assemble from Subunits ## Membranes grow how By expansion of pre existing membranes ## Signal-receptor interactions do what Guide cellular components to their right place ## What is an example of a single receptor interaction Hormones, growth factors, nutrients, neurotransmitters, toxins ## Cellular components move by Pumps, motors, diffusion ## The things needed for molecular pumps to drive molecular movement against concentration gradients Breaking of ATP or electrochemical gradients ## Molecular signals control Cell growth, function, shape