1.1.3
1. How does a single cell-the fertilized egg-give rise to a complex, multicellular organism?
As the cell divides, there are different cells that appear which have different functions.
2. How does cellular differentiation occur in eukaryotic cells?
Certain cells begin to have different directions given by their DNA, making them perform different functions.
3. What role do stem cells play in cell differentiation?
Stem cells can assist cells as they have no specific job, they can take over for other cells when the time arises.
4. How do chemical signals control cellular activities?
Chemical signals from cells can tell other cells around them what they should do.
1.2.1
1. What is the role of the plasma membrane in maintaining homeostasis?
The plasma membrane would regulate what comes in the cell and what leaves the cell.
2. How does the cell maintain homeostasis through the regulation of:
Solutions can move in the cell or cause water to move out, causing the cell to shrivel, & solutions could also enter the cell causing it to swell and sometimes even burst
1. How does a single cell-the fertilized egg-give rise to a complex, multicellular organism?
As the cell divides, there are different cells that appear which have different functions.
2. How does cellular differentiation occur in eukaryotic cells?
Certain cells begin to have different directions given by their DNA, making them perform different functions.
3. What role do stem cells play in cell differentiation?
Stem cells can assist cells as they have no specific job, they can take over for other cells when the time arises.
4. How do chemical signals control cellular activities?
Chemical signals from cells can tell other cells around them what they should do.
1.2.1
1. What is the role of the plasma membrane in maintaining homeostasis?
The plasma membrane would regulate what comes in the cell and what leaves the cell.
2. How does the cell maintain homeostasis through the regulation of:
- temperature,
Nerve cells can send signals throughout the body to produce or reduce temperature - pH, blood
Body fluids are buffered to prevent a drastic change in pH levels through proteins - glucose levels, and
Cells create insulin, which converts glucose to glycogen, and when the cells aren't creating insulin, glycogen is converted to glucose allowing stable glucose levels - water balance?
Water is balanced so that cells don't shrivel or burst
Solutions can move in the cell or cause water to move out, causing the cell to shrivel, & solutions could also enter the cell causing it to swell and sometimes even burst