PATHOLOGY

Detailed explanation-1: -Internal regulators-proteins that respond to events inside a cell. External regulators-proteins that respond to events outside the cell.-speed up or slow down the cell cycle. Growth factors-external regulators that stimulate the growth and division of cells.

Detailed explanation-2: -External regulators are proteins that respond to events OUTSIDE the cell. Some of these are called growth factors which stimulate the cell cycle, very important during embryonic development and wound healing.

Detailed explanation-3: -Internal regulators allow the cell cycle to proceed only when certain processes have happened inside the cell. Proteins that respond to events outside the cell are called external regulators. External regulators direct cells to speed up or slow down the cell cycle.

Detailed explanation-4: -Internal regulators are special proteins that permit the cell cycle to continue only when certain conditions have been met inside the cell. For example mitosis can’t proceed unless the DNA has been copied. Thus it allows the cell cycle to proceed only when certain processes have happened inside the cell.

Detailed explanation-5: -Competition and Markets Authority. Equality and Human Rights Commission. Financial Conduct Authority (FCA) HM Revenue and Customs (HRMC) Pensions Regulator.