The type of cell that has a lifespan of about four days is the colon cell. Cells in the lining of the colon are continuously renewed due to their exposure to harsh conditions and have a relatively short lifespan compared to other cell types.
Which type of cell has a life span of four days?(1 point)
Responses
colon
colon
heart
heart
brain
brain
skin
9 answers
Why do heart cells have different characteristics than skin cells?(1 point)
Responses
Heart cells reproduce by mitosis.
Heart cells reproduce by mitosis.
Heart cells reproduce by cell differentiation.
Heart cells reproduce by cell differentiation.
Heart cells express different genes than skin cells.
Heart cells express different genes than skin cells.
Heart cells have different DNA than skin cells.
Heart cells have different DNA than skin cells.
Responses
Heart cells reproduce by mitosis.
Heart cells reproduce by mitosis.
Heart cells reproduce by cell differentiation.
Heart cells reproduce by cell differentiation.
Heart cells express different genes than skin cells.
Heart cells express different genes than skin cells.
Heart cells have different DNA than skin cells.
Heart cells have different DNA than skin cells.
Heart cells have different characteristics than skin cells because heart cells express different genes than skin cells. Although all cells in an organism have the same DNA, the specific genes that are expressed (turned on or off) determine the unique functions and characteristics of each cell type.
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 multiply once adding mass to the organism
an organism's cells multiply once 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 many times adding mass to the organism
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 multiply once adding mass to the organism
an organism's cells multiply once 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 many times adding mass to the organism
The change that would likely result from proliferation is an organism's cells multiply many times adding mass to the organism. Proliferation refers to the process of cell division where cells multiply, leading to an increase in the number of cells and therefore, an increase in mass.
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.
Stem cells differentiate to provide specialized cells that replace damaged tissue.
Stem cells differentiate to provide specialized cells that replace damaged tissue.
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.
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.
Stem cells differentiate to provide specialized cells that replace damaged tissue.
Stem cells differentiate to provide specialized cells that replace damaged tissue.
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.
The true statement about cell differentiation when the body tries to heal from an injury is Stem cells differentiate to provide specialized cells that replace damaged tissue. During the healing process, stem cells can differentiate into the specific types of cells needed to repair and replace the damaged tissue.
Are your heart cells the same as your brain cells? Why or why not?(1 point)
Responses
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.
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.
No, heart cells are stem cells that replicate and create brain cells, therefore they are two different types of cells.
No, heart cells are stem cells that replicate and create brain cells, therefore they are two different types of cells.
No, different sections of the cells' DNA are "tuned on" causing heart cells to have different characteristics from brain cells.
Responses
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.
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.
No, heart cells are stem cells that replicate and create brain cells, therefore they are two different types of cells.
No, heart cells are stem cells that replicate and create brain cells, therefore they are two different types of cells.
No, different sections of the cells' DNA are "tuned on" causing heart cells to have different characteristics from brain cells.
The correct response is No, different sections of the cells' DNA are "tuned on" causing heart cells to have different characteristics from brain cells.
While all cells in an organism have the same DNA, the process of gene expression allows different types of cells (like heart cells and brain cells) to develop distinct structures and functions based on which genes are activated or suppressed.