This is where DNA is located in a eukaryotic cell.
In the nucleus.
100
How do unicellular organisms use cell division?
They use it to reproduce.
100
What is cytokinesis?
It occurs when a parent cell’s cytoplasm divides after mitosis. In an animal cell, a fiber ring forms and contracts around the center of the cell, pinching it apart.
100
What does mitosis and cytokinesis produce at the end of it?
Two genetically identical daughter cells.
100
Describe regeneration.
It's the process of new tissue growth at the site of a wound, missing body part in some multicellular organisms. Other organisms, like starfish, can reproduce this way.
200
This holds together two chromatids in a chromosome.
The centromere.
200
How does cell division help cells repair themselves?
The body repairs injuries through cell division, also, as an organism ages, worn-out cells are replaced.
200
What happens during interphase?
The part of the cell life cycle in which the cell is not dividing but is carrying out its normal activities.
200
What takes place during Telophase?
New nuclear membranes form.
200
Describe budding.
It's a form of asexual reproduction in which an organism develops tiny buds on its body. Each bud forms from the parent's cells, so the bud's genetic material is the same as the parent's. It grows until it forms a complete or nearly complete new organism.
300
A duplicated chromosome consists of two _______________.
Chromatids.
300
Describe how cells develop through cell division.
As cells divide, many become specialized to perform particular functions.
300
What is the cell cycle?
The normal sequence of development & division of a cell.
300
What occurs during Anaphase?
Chromatids split into separate chromosomes, & chromosomes are pulled to the opposite side of the cell.
300
Describe binary fission.
It's the form of asexual reproduction and it occurs when the parent organism splits in two, producing two completely independent and genetically identical daughter cells.
Ex.) Bacteria, protozoans, paramecium, etc.
400
What are chromosomes?
They are structures in which DNA is wrapped around proteins like thread around a spool and compacted.
400
Describe how cell division helps with the growth of a multicellular organism.
Organisms grow as their cells divide and create more cells.
400
What are the 4 phases of mitosis? (In order)
Prophase, Metaphase, Anaphase, Telophase
400
What happens during Metaphase?
Chromosomes line up in the middle of the cell.
400
What is asexual reproduction?
Asexual reproduction involves one parent and it produces one or more new organisms that are identical to itself and that live independently of it.
500
What is DNA?
It's a chemical that contains information for an organism's growth and functions. (genetic info)
500
Name the three purposes of cell division in multicellular organisms.
1. Growth
2. Development
3. Repair
500
What are the three main stages of the cell cycle.
Interphase, Mitosis and Cytokinesis.
500
What happens during Prophase?
DNA condenses into chromosomes, nuclear membrane disappears.