Question

Question

Which type of cell has a life span of four days?(1 point)
Responses

skin
skin

brain
brain

colon
colon

heart

Why do heart cells have different characteristics than skin cells?(1 point)
Responses

Heart cells express different genes than skin cells.
Heart cells express different genes than skin cells.

Heart cells reproduce by mitosis.
Heart cells reproduce by mitosis.

Heart cells have different DNA than skin cells.
Heart cells have different DNA than skin cells.

Heart cells reproduce by cell differentiation.

Which change would likely result from proliferation?(1 point)
Responses

an organism's cells combine many times adding mass to the organism
an organism's cells combine many times adding mass to the organism

an organism's cells combine once adding mass to the organism
an organism's cells combine once adding mass to the organism

an organism's cells multiply once adding mass to the organism
an organism's cells multiply once adding mass to the organism

an organism's cells multiply many times adding mass to the organism

Which of the following is true about cell differentiation when the body tries to heal from an injury?(1 point)
Responses

Cells grow during the synthesis phase of the cell cycle in preparation for senescence.
Cells grow during the synthesis phase of the cell cycle in preparation for senescence.

Platelets express different sections of RNA in order to create skin cells.
Platelets express different sections of RNA in order to create skin cells.

Damaged cells proliferate until the wound heals.
Damaged cells proliferate until the wound heals.

Stem cells differentiate to provide specialized cells that replace damaged tissue.
Stem cells differentiate to provide specialized cells that replace damaged tissue.

Are your heart cells the same as your brain cells? Why or why not?(1 point)
Responses

No, different sections of the cells' DNA are "tuned on" causing heart cells to have different characteristics from brain cells.
No, different sections of the cells' DNA are "tuned on" causing heart cells to have different characteristics from brain cells.

Yes, the heart cell and the brain cell have the same function, therefore they are identical.
Yes, the heart cell and the brain cell have the same function, therefore they are identical.

Yes, during mitosis, the resulting daughter cells are identical which means that all cells in the body are the same.
Yes, during mitosis, the resulting daughter cells are identical which means that all cells in the body are the same.

No, heart cells are stem cells that replicate and create brain cells, therefore they are two different types of cells.

Answer 1

Here are the correct answers for each of your questions:

1. Which type of cell has a life span of four days?

   • Response: colon

2. Why do heart cells have different characteristics than skin cells?

   • Response: Heart cells express different genes than skin cells.

3. Which change would likely result from proliferation?

   • Response: an organism's cells multiply many times adding mass to the organism.

4. Which of the following is true about cell differentiation when the body tries to heal from an injury?

   • Response: Stem cells differentiate to provide specialized cells that replace damaged tissue.

5. Are your heart cells the same as your brain cells? Why or why not?

   • Response: No, different sections of the cells' DNA are "tuned on" causing heart cells to have different characteristics from brain cells.

If you have any further questions, feel free to ask!