DNA, the blueprint
DNA holds the plan for the body.
Look-alikes
Two cows of the same kind look alike. Their body designs are similar, so the blueprints for the designs must be similar too.
Where in a cell is the information for making proteins kept?
What this lesson covers
The idea
DNA in the cell nucleus is the information source for making proteins; if this information changes, different proteins are made, which eventually lead to altered body designs.
Look-alikes
Two cows of the same kind look alike. Their body designs are similar, so the blueprints for the designs must be similar too.
Where in a cell is the information for making proteins kept?
- In the nucleus, as DNA
- In the food the cell takes in
- Outside the cell
From DNA to body design
Press Next step to follow the chain.
The plan for the body
Think of DNA as a plan kept in the nucleus. The cell reads it to make proteins. The proteins decide how the body is built. So if the plan changes, the proteins change, and in the end the body design can change.
The DNA in the cell nucleus is the information source for making proteins. If this information changes, different proteins are made, which eventually lead to altered body designs.
Notes
DNA in the nucleus is the information source for making proteins. If the information changes, different proteins are made and the body design can be altered.
Check yourself
Which part of the cell holds the DNA that is the information source for making proteins?
What happens if the information in the DNA is changed?
Which order is correct?
- The cell membrane. The book says the chromosomes with the DNA are in the nucleus of the cell.
- The nucleus — correct. Yes!
- The food the cell takes in. The information for making proteins is in the DNA, which is in the nucleus.
- The same proteins are made. Different proteins will be made if the information is changed.
- Nothing, because DNA has nothing to do with proteins. DNA is the information source for making proteins, so changed information changes the proteins.
- Different proteins are made — correct. Yes!
- DNA, then proteins, then body design — correct. Yes!
- Body design, then proteins, then DNA. DNA is the information source for making proteins, so DNA comes first.
- Proteins, then DNA, then body design. DNA is the information source for making proteins, so the proteins are made after the information is read.