Chapter 8.6 Flashcards Preview

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Flashcards in Chapter 8.6 Deck (6)
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1

Development depends on the balance of what 2 processes

a balance between cell division and programmed death( apoptosis)

2

The difference between appoptosis and necrosis

apoptosis : is programmed death resulting from precisely coordinated series of events that dismantle a cell.
Necrosis: sudden traumatic and disorderly accidental death of a cell.

3

2 main function of apoptosis in animals

1. elimates ecess cells ( carves out functional structures like finger, toes, nostrils and ears)
2. weed out defective aging or defective cells that might harm an organism ( peeling skin that follows a sunburn preventing skin cancer)

4

Apoptosis in plant cells

plant cells are digested by enzymes by their own vacuoles; when the vocuole bursts the cell dies. Plants also use a form of cell death to kill cells infected by fungi or bacteria, limiting the spread of pathogen.

5

. What events happen in a cell undergoing apoptosis?

A cell undergoing apoptosis first receives a signal at a membrane protein called a death receptor. The signal triggers the release of enzymes that destroy the cell from within. Eventually, immune system cells engulf the dying cell, degrading or recycling its components.

6

Describe two functions of apoptosis

Apoptosis carves out excess cells to form a body structure, and it eliminates damaged or aging cells.