Gene Expression Quick Check

When a stem cell differentiates and changes in size and shape, specific genes are being expressed.

So the correct response is "expressed."

Which of the following describes when the cell leaves the cell cycle and no longer divides?(1 point)
Responses

senescence
senescence

mitosis
mitosis

interphase
interphase

differentiation

The term that describes when a cell leaves the cell cycle and no longer divides is senescence.

So the correct response is "senescence."

Consider the three different types of stem cells. Each one’s ability to differentiate into new cells is slightly different. One type can differentiate into any cell, while another can only become specific cells. Select the answer that places the three types in the correct order, from widest range of differentiation to least able to differentiate (specific).(1 point)
Responses

pluripotent, totipotent, multipotent
pluripotent, totipotent, multipotent

pluripotent, multipotent, totipotent
pluripotent, multipotent, totipotent

totipotent, pluripotent, multipotent
totipotent, pluripotent, multipotent

totipotent, multipotent, pluripotent

The correct order, from the widest range of differentiation to the least able to differentiate (specific), is:

totipotent, pluripotent, multipotent.

So the correct response is "totipotent, pluripotent, multipotent."

Gene expression is determined by several factors, including(1 point)
Responses

senescence
senescence

the brain
the brain

protein synthesis
protein synthesis

chemicals in the body

Gene expression is determined by several factors, including chemicals in the body.

So the correct response is "chemicals in the body."

Which of the following would be an environmental factor that could affect gene expression? (1 point)
Responses

organ of the organism
organ of the organism

sex of the organism
sex of the organism

number of organisms in the group
number of organisms in the group

temperature of the water

The environmental factor that could affect gene expression is temperature of the water.

So the correct response is "temperature of the water."