Show:
Cell organelles
Cell Cycle
Mitosis
Cytokinesis
Potpourri (Mixed questions)
100
Organelles which produce spindles in preparation of mitosis (nuclear division of chromosomes)
What are centrioles?
100
Cell cycle phase in which organelles spend almost 90% of their life spans just doing its normal functions:)
What is Interphase?
100
Phase in which the chromatids are separating ---- Moving APART from the center to make sure each new daughter cell has its own identical DNA chromosomal information/genes
What is anaphase?
100
cytokinesis follows which phase
What is telophase?
100
Name two types of cells which do not divide or go through mitosis
What are nerve cells, muscle (heart), and ligaments?
200
Materials containing genetic information located in the nucleoplasm. This material condenses to become chromosomes which are actually paired, sister chromatids.
What is chromatin?
200
Stages of Cell Cycle beginning with G 1 to Cytokinesis
What is G 1 S G2 M (Pro - meta - ana- and telo- phases) and cytokinesis.
200
phase of mitosis where the nuclear membrane breaks down, and the chromatin material is condensing to form chromosomes
What is prophase?
200
name given for the pinching apart of the identical daughter cells... specifically speaking about animal cells only
What is cleavage furrow?
200
Name two types of cells which are replaced often and explain why these cells are replaced often.
What are skin cells and cells which line the digestive tract These cells are replaced often due to the mechanical stress and the harsh environment in which they live.
300
The organelle contains the chromatin material which becomes the chromosomes.
What is the nucleus?
300
Phase in which the cell copies to have doubles of organelles before mitosis actually occurs
What is Gap 1 or Gap 2?
300
Phase in which the chromosomes are lined up on the equatorial plate, sometimes called the metaphase plate
What is metaphase?
300
name given to the plant partition which separates the two identical daughter cells
What is cell plate or cell wall?
300
Where are blood cells made and explain why red blood cells cannot go through mitosis.
What is bone marrow and rbc do not have nuclei ? :)
400
The materials that makes up our chromosomes are proteins and this very important double helical molecule:)
What is deoxyribonucleic acid?
400
What is the cell cycle stage whereby DNA (deoxyribonucleic acid) is produced?
What is the Synthesis phase or S phase?
400
Point on the chromosome in which the spindle fibers extending from the centrioles attach in order to pull apart the paired sister chromatids
What is the centromere?
400
What material is actually separating during cytokinesis?
What is cytoplasm? Plus, one could say each daughter cell gets a copy of everything.
400
What type of cells can differentiate into any type of cells and name two locations where these cells are found
What are stem cells? Stem cells are located in bone marrow, peripheral blood, skeletal muscle, epithelia of the skin and digestive systems, cornea, retina, liver, and pancreas.
500
Organelle surrounding the nucleus which breaks down during prophase and rebuilds during interphase and explain why this structure has to be broken down and then built back up
What is nuclear membrane? The nuclear membrane has to come apart in order to allow the nuclear materials (replicated DNA) to be divided between the two daughter cells and then has to be closed or built back up to contain the precious DNA...genetic information.
500
Which cell cycle phase produces enzymes (which are proteins) needed for all of the chemical reactions involved in mitosis? Plus, what is the purpose of a checkpoint at the end of this phase?
What is G2? The checkpoint makes sure each DNA is copied correctly and that all organelles have a copy or a double which can be split evenly between the two daughter cells.
500
Protein which helps to regulate the progression of the cell cycle from one stage to another and name one example in which this protein would be activated to start the cell division process.
What is cyclin? An example would be when an individual gets a cut and the cells are not in contact with each other. Cells will begin to enter into cell cycle to repair the damaged cells.
500
Before cytokinesis occurs, how many checkpoints have occurred in the cell cycle and when do the checkpoints occur? Name the times between phases.
What is three checkpoints: Between G1 and S Between G2 and M and during the M (mitotic phase).
500
What limits cell size? Name two important reasons cells must remain small.
What is DNA overload? The nucleus (boss of the cell) has DNA which produces protein which determine the cell's appearance and functions. DNA can only produce so much. The volume of a cell increases at a faster rate than the surface area of the cell membrane.