B3 Flashcards
0
Q
What is a cell membrane?
A
• Allows movement in and out of the cell
1
Q
What is a cytoplasm?
A
• Where chemical reactions take place
2
Q
What is a nucleus?
A
• Containing the genetic information and control what the cell does
3
Q
What is the mitochondria?
A
• Respiration takes place inside the mitochondria, supplying energy for the cells. Cells that have a high energy requirement e.g. Sperm cells, muscle cells and live cells, have large numbers of mitochondria
4
Q
What is a ribosome?
A
- Too small to see under a microscope
* Ribosomes are in the cytoplasm and are the site of protein synthesis
5
Q
What is a gene?
A
• A region of a chromosome that carries information that carries information about, and controls, a particular inherited characteristic
6
Q
Describe how and who invented the structure of DNA?
A
- Watson and Crick used data from other scientists to build a model of DNA
- X-Ray technology data there were two chains wound in a helix, other data indicated that the bases occurred in pairs
