Importance of Cell Division
What are the three main purposes of cell division?
Repair, Growth, Reproduction
What occurs during cytokinesis?
The cell membranes of the 2 daughter cells pinch off
What are 2 things that could cause cancer?
Smoking, X-Rays, UV radiation, Environmental pollutants, some viruses
What is the smallest unit of organization in the body?
The Cell
What is diffusion?
The movement of dissolved substances from an area of high concentration to an area of low concentration.
What forms around each set of daughter chromosomes during telophase?
Nuclear membrane
What is a benign tumor?
A tumour that is not spreading to other parts of the body
What is a group of tissues working together called?
An organ
What is the difference between sexual and asexual reproduction?
What occurs during interphase?
All activities of growth and maintenance of the cell.
What is the definition of cancer?
A series of different diseases marked by abnormal cell growth
How many different cell types are in the human body?
Over 200
Why do cells need to divide instead of just getting bigger?
Exchange of nutrients and waste does not work fast enough if the cell is too big
Name the four stages of mitosis.
PMAT
What is a carcinogen?
An environmental factor that could cause cancer
What is one the four basic types of tissues?
Epithelial, Muscle, Connective, Nervous
What is the animal that can make clones of itself and is essentially immortal?
The Hydra!
What happens during anaphase?
Chromosome split and the chromatids move to opposite sides of the cell
What is a malignant tumor?
A tumour with a blood supply that can travel to other parts of the body
What is a specialized cell?
A cell with a specific function