Samuel tripped while playing basketball and skinned his knee on the concrete. Many of the skin cells on that knee were killed or removed entirely, leaving his knee open and unprotected. Eventually, his knee scabbed over, and when the scabs fell off, there was new skin underneath.

Where did the new skin come from?

Existing cells near the injury changed into skin cells to cover the injury.

Extra skin cells from other parts of Samuel's body were moved to the injury.

Existing skin cells near the injury reproduced to make new cells.

Ski

Question

Samuel tripped while playing basketball and skinned his knee on the concrete. Many of the skin cells on that knee were killed or removed entirely, leaving his knee open and unprotected. Eventually, his knee scabbed over, and when the scabs fell off, there was new skin underneath.

Where did the new skin come from?





Existing cells near the injury changed into skin cells to cover the injury.







Extra skin cells from other parts of Samuel's body were moved to the injury.







Existing skin cells near the injury reproduced to make new cells.







Ski

anonymous · Answer

@Juicstice

juicstice · Answer

Existing skin cells near the injury reproduced to make new cells.

anonymous · Answer

The main purpose of cell division is






































to remove cellular waste.





to produce cellular energy.





to absorb nutrients.





to produce more cells

anonymous · Answer

@Juicstice

juicstice · Answer

to produce more cells

anonymous · Answer

An organism that reproduces using binary fission creates an identical copy of a cell when































































part of the cell breaks off and creates a completely new set of chromosomes.





the cell's chromosomes replicate and the cell divides, giving each cell an identical copy of each chromosome.





the cell's chromosomes break apart and the cell divides, giving each new cell half of each chromosome.





the cell's cytoplasm spontaneously creates new chromosomes, then the cell divides.

anonymous · Answer

@Juicstice

juicstice · Answer

the cell's chromosomes replicate and the cell divides, giving each cell an identical copy of each chromosome.

anonymous · Answer

In multicellular organisms, the process of cell division leads to _________.
























































































a decrease in cell number





the death of many cells





an increase in cell number





a destruction of all cells

anonymous · Answer

@Juicstice

juicstice · Answer

an increase in cell number

anonymous · Answer

How does growth compare between plants and fungi?

















































































































A plant's growth occurs as the enlargement of a single cell to a certain size; a fungus' growth occurs as specialized cells repeatedly divide to form new cells for the fungus.







The growth of both a fungus and a plant occur as the enlargement of a single cell to a certain size.







The growth of both a plant and a fungus occur as specialized cells repeatedly divide to form new cells for the organism.







A fungus' growth occurs as the enlargement of a single cell to a certain size; a plant's growth occurs as specialized cells repeatedly divide to form new cells for the plant.

anonymous · Answer

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