Skin cells(1 point) Responses
become quiescent quickly.
are stem cells.
become senescent quickly.
have terminally differentiated.
Skin cells become senescent quickly.
To repair damaged tissue.
Which of the following is a function of mitosis? (1 point) Responses
to repair damaged tissue to repair damaged tissue
to cause a cell to grow to cause a cell to grow
to make a cell exit the cell cycle to make a cell exit the cell cycle
to send chemicals signals throughout the body
To determine which statement about skin cells is correct, we can break down each statement and analyze them individually.
Statement 1: Skin cells become quiescent quickly.
Quiescent refers to a state where cells are not actively dividing or proliferating but can re-enter the cell cycle if necessary. Quiescence can happen to many cell types, including skin cells. However, it is important to note that skin cells are highly proliferative due to the constant renewal and regeneration of the skin. Therefore, while skin cells can enter a quiescent state, it is not accurate to say that they become quiescent quickly.
Statement 2: Skin cells are stem cells.
Stem cells are undifferentiated cells that have the potential to differentiate into various specialized cell types. While the skin does contain a population of stem cells known as epidermal stem cells, they are specifically found in specific regions called hair follicles and basal layer of the epidermis. These stem cells play a crucial role in repairing and regenerating the skin. However, the majority of skin cells are not stem cells. So, it would be incorrect to say that all skin cells are stem cells.
Statement 3: Skin cells become senescent quickly.
Cellular senescence refers to a state where cells lose their ability to divide and undergo functional changes over time. While senescence can occur in skin cells as a result of various factors such as aging or damage, it is not accurate to say that skin cells become senescent quickly. Skin cells, particularly those in the epidermis, have a relatively short lifespan and are continually replaced through the process of cell division and differentiation.
Statement 4: Skin cells have terminally differentiated.
Terminal differentiation refers to a process where cells become specialized and adopt a specific function that they cannot reverse or change. In the skin, cells such as keratinocytes undergo terminal differentiation to form the protective outer barrier layer of the epidermis. So, it is correct to say that once skin cells, like keratinocytes, undergo terminal differentiation, they have become specialized and cannot revert to a less differentiated state.
In summary, the correct statement is: Skin cells have terminally differentiated.