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Bio
Unit 05-Cell division
Question | Answer |
---|---|
What is term for when there is an uncontrolled growth of cells? | cancer |
In what mitotic phase do we see the chromatids lined up in the middle (at the equator)? | metaphase |
Before cell division what is the form of the chromosomes? | chromatin |
Why should cells be smaller? | need to obtain nutrients and get rid of wastes |
What does malignant tumor mean? | It can travel and affect tissues around it and possibly other places |
In animal cells during cytokinesis what gets formed that does not happen in plant cells? | cleavage furrow |
What happens in the S phase? | The DNA is copied |
Name 4 reasons why cells division is important: | growth, development, repair, asexual reproduction |
What hold the sister chromatids together? | centromeres |
In plant cells during cytokinesis, what gets formed that does not happen in animal cells? | cell plate |
What does benign tumor mean? | It doesn’t travel and affect different tissues |
In what part of the cell cycle does the cell spend most of its time? | interphase |
What are the 4 steps in Mitosis in correct order: | prophase, metaphase, anaphase, telophase |
What happens in the G2 phase? | The cell prepares for mitosis |
What is the goal of mitotic cell division? | get two exact copies of original cell |
How many daughter cells do we get from mitosis and cytokinesis | 2 identical cells |
In what mitotic phase do we see the nuclear membrane begin to reappear around the two sets of chromosomes? | telophase |
What is chromatin made of? | DNA and protein |
In what mitotic phase do we see the nuclear membrane begin to dissolve and see the sister chromatids clearly? | prophase |
In what mitotic phase do we see the chromatids moving toward the two poles? | anaphase |
How do cells know when to divide? | 3 checkpoints |
What happens in the G1 phase? | the cell grows in size |
What are the 3 main stages of the cell cycle? | interphase, mitosis, cytokinesis |
Should cells be larger or smaller? | smaller |
What are the 3 stages of interphase in correct order? | G1, S, G2 |
When in S phase, what is the structure of the chromosomes? | sister chromatids |