Chapter 8- Key Terms And Concepts Flashcards
How does the cell go about apoptosis?
Lysosomes with the help of enzymes break down the cell components and then your immune system finishes off the cell.
Define necrosis
Cell death due to trauma
Which enzymes unzip the DNA
Helicase enzymes
What is binary fission?
The process by which a cell duplicates an exact copy of itself
What is the first step in binary fission?
DNA replicates
What is the second step of binary fission?
The chromosomes attach to the cell membrane
What is the 3rd step of binary fission?
Cell growth between the chromosomes separate the chromosomes creating identical daughter cells
What are chromosomes made of?
Chromatin
What are the 3 phases of interphase?
G1
S
G2
What happens in G1?
Cellular contents are duplicated. BESIDES the chromosomes
What happens in the S phase
The duplication of the genetic material
What happens in the G2 phase?
The cell double checks everything
True or false. Cytokinesis occurs after Mitosis
True
What are the “Gap Periods” of interphase?
G1 and G2
What is the synthesis period of interphase?
The S phase
What is the resting phase of interphase?
G0
What is the order of phases in Mitosis?
Prophase Pro metaphase Metaphase Anaphase Telophase
What occurs in prophase?
Nuclear envelopes break down
What occurs in metaphase?
Replicated chromosomes align along the cell center
What occurs in anaphase?
Chromosomes separated
What occurs in telophase?
Cells divide and nuclear envelopes form
How does cancer form?
Cell growth gets out of control and DNA is not checked
What is the name of the enzyme that is sent out after tumors get too big?
Telomerase
What do oncogenes do?
Controls the speed of cell division
