U2 KA1: Producing New Cells Flashcards
1
Q
What is Mitosis?
A
- the division of cells to create two identical daughter cells.
2
Q
What is a Chromosome?
A
- a long DNA molecule containing genetic material in an organism.
3
Q
What is a Haploid Cell?
A
- a cell containing a single set of chromosomes.
4
Q
What is a Diploid Cell?
A
- a cell containing two sets of chromosomes.
5
Q
Mitosis Stage 1
A
- DNA bundles up tightly.
6
Q
Mitosis Stage 2
A
- 2 identical chromatids held together by a centromere.
7
Q
Mitosis Stage 3
A
- nuclear membrane is broken down and chromatids are free to move.
8
Q
Mitosis Stage 4
A
- spindle fibres appear and attach to centromeres pulling them to the equator.
9
Q
Mitosis Stage 5
A
- Chromatids separated and dragged towards opposite cell poles by spindle fibres.
10
Q
Mitosis Stage 6
A
- the Cytoplasm divides.
11
Q
Body Segment Order (smallest to largest)
A
Cells -> Tissues -> Organs -> Systems
12
Q
What is a Specialised Cell?
A
- cells with a specific role, (eg. Red Blood Cells).
13
Q
What is a Stem Cell?
A
- unspecialised cells that can turn into different types of specialised cells.
14
Q
What can an Embryonic Stem Cell become?
A
- any type of cell.
15
Q
What can a Tissue Stem Cell become?
A
- a few types of cell.
16
Q
Give 2 unicellular organism examples.
A
- Ameoba and Euglena.
17
Q
Give 2 multicellular organism examples.
A
- Nerve Cell, Red Blood Cell.
