Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
29 Cards in this Set
- Front
- Back
|
During what phase are chromosomes visible?
|
Prophase
|
|
|
What is a cell plate
|
A structure in the middle of the cytoplasm of a plant cell separating the nucleii during cell division
|
|
|
What process follows mitosis?
|
Cytokinesis-separation of the cytoplams
|
|
|
Define mitosis
|
Mitosis is the separating of the nucleus during cell division.
|
|
|
Define cell cycle
|
The steps that a cell goes through during cell division making two new cells
|
|
|
4 phases of cell division in plant and animal cells
|
Prophase-chromosomes condense--- Metaphase-Chromosomes line up along equator--- Anaphase- Chromosomes group at end near spindle---Telophase-nuclear envelope form around chromosomes
|
|
|
What happens when a cell injected with cytoplasm from a cell that is undergoing mitosis?
|
The cell begins the process of cell division???
|
|
|
WHat is one difference between cell division in plant cells and in animal cells?
|
During cytokinesis, plant cells form a cell plate between the cytoplasm and animal cells just form a cell membrane
|
|
|
What three things regulate the cell cycle?
|
internal and external regulators of proteins like cyclins and molecules on the surface of neighbor cells
|
|
|
The speed with which wastes are produced by a cell depend on the cell's
|
Surface area and volume of the cell
|
|
|
During what 2 phases are chromosomes visible as X's?
|
Prophase and Metaphase
|
|
|
If a parent cell has 4 chromosomes, how many will each duagher cell have?
|
4
|
|
|
How do you calculate the surface area to volume ratio?
|
Surface area: = 1 x width x 6
divided by volume 1 x width x height |
|
|
What problems does cell division solve for a cell?
|
If the cell grew too big, it could not make enough DNA for the cell's needs and it would not have enough surface area to get rid of waste or to get in enough food and oxygen
|
|
|
If the length of a cell increases 10 times, how much will its volume increase?
|
10 x 10 x 10 or 1000
|
|
|
Cancer cells from masses are called
|
Tumors
|
|
|
What happens with a cell that has a defective p53 gene?
|
It divides uncontrolably or doesn't follow the rules of cell growth
|
|
|
What are the two main stages of cell division?
|
Mitosis and cytokinesis
|
|
|
What factor stops normal cells from growing?
|
cell regulators
|
|
|
What is a tumor
|
Mass of cells that grow against the rules.
|
|
|
What types of cells does cancer effect?
|
Cancer effects all cells
|
|
|
When in the cell cycle is DNA replicated?
|
In the S phase
|
|
|
What happens when cells come in contact with each other?
|
They stop growing or dividing
|
|
|
What can you assume when a cell divide?
|
That the organism is alive
|
|
|
When do chromosomes line up along the equator of the cell?
|
Metaphase
|
|
|
What problems do large cells have?
|
Not enough surface area to take in oxgyen and food and to give off waste.
|
|
|
What is cancer?
|
Cells that do not respond to the signals that regulate cell growth and grow out of control
|
|
|
List the phases of mitosis in order
|
Prophase Metaphase Anaphase Telephase
|
|
|
What is the role of the spindle during mitosis?
|
helps separate the chormosomes
|
