AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

GENE MUTATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following occurs in the G0 phase? Cells in G0 are:
A
metabolically active. (performing their functions)
B
not completely developed. More growth is required.
C
not actively dividing nor preparing to divide.
D
fully differentiated.
Explanation: 

Detailed explanation-1: -Note: The adult neuron cells permanently reside in the G0 phase. These cells are fully differentiated and are metabolically active but do not divide. This is due to the internal genetics of the neuronal cells. The mature hepatocytes also stay in the quiescent stage.

Detailed explanation-2: -The G0 phase is a form of the resting state, or quiescence, in which cells reside until they receive appropriate signals-for example, from growth factors-stimulating them to re-enter and progress through the cell cycle.

Detailed explanation-3: -This state is called the quiescent or the G0 phase. Many types of differentiated cells are found in the G0 phase in vivo and quiescence is also an important feature of stem cells such as hematopoietic6, 7, 8, 9, 10, muscle11, 12, 13, 14, 15, intestinal16 and epithelial17 stem cells.

Detailed explanation-4: -Differentiated bone Of the four major types of bone cells, osteocytes are the most common and also exist in a terminal G0 phase.

There is 1 question to complete.