Skin cells(1 point)

Responses

become senescent quickly.
become senescent quickly.

become quiescent quickly.
become quiescent quickly.

have terminally differentiated.
have terminally differentiated.

are stem cells.

9 answers

Skin cells are typically characterized as having terminally differentiated status. They undergo a process of differentiation to become specific types of skin cells, such as keratinocytes, that contribute to the skin's barrier function. Therefore, the most accurate response is:

have terminally differentiated.

Which cell type undergoes terminal differentiation?(1 point)
Responses

stem cells
stem cells

heart cells
heart cells

hair cells
hair cells

epithelial cells

Terminal differentiation refers to the process by which a precursor cell, often a stem cell, undergoes changes to become a fully specialized cell type that no longer divides. Among the options provided:

  • Stem cells: These are not terminally differentiated, as they retain the ability to divide and differentiate into various cell types.
  • Heart cells: Cardiomyocytes (heart muscle cells) can be considered terminally differentiated, as they usually do not divide after development.
  • Hair cells: Certain hair cells (such as those in the inner ear) are terminally differentiated.
  • Epithelial cells: These can also undergo terminal differentiation, as they form various specialized cell types in tissues.

Given these points, both heart cells and hair cells undergo terminal differentiation. However, if you need to select one from the options, heart cells are a common and clear example of terminally differentiated cells.

So the best response is:

heart cells.

In eukaryotic cells, DNA replicates in the(1 point)
Responses

cell membrane.
cell membrane.

cytoplasm.
cytoplasm.

nucleus.
nucleus.

endoplasmic reticulum.

In eukaryotic cells, DNA replicates in the:

nucleus.

The nucleus is the membrane-bound organelle that houses the cell's genetic material, where replication occurs during the cell cycle.

Which of the following is a function of mitosis? (1 point)
Responses

to send chemicals signals throughout the body
to send chemicals signals throughout the body

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 repair damaged tissue

The primary function of mitosis is:

to repair damaged tissue.

Mitosis is the process by which a eukaryotic cell divides its nucleus and genetic material, resulting in two identical daughter cells. This process is essential for growth, development, and tissue repair. While mitosis also contributes to cell growth, the specific answer regarding its function is most closely related to repairing tissues.

What replicates during mitosis?(1 point)
Responses

organelles
organelles

cells
cells

cytoplasm
cytoplasm

proteins

During mitosis, the structure that replicates is:

cells.

Mitosis is the process by which a single cell divides to produce two identical daughter cells. This involves the replication and partitioning of the cell's DNA, leading to the formation of two new cells. While organelles and cytoplasm may be distributed between the daughter cells, the key outcome of mitosis is the replication of the entire cell.