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DNA, RNA and protein synthesis summary
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DNA consists of two strands twisted into a double...?
helix
What is each strand composed of?
nucleotides
What does each molecule consist of?
Deoxyribose sugar, phosphate and one of the four types of bases
What are the four types of bases?
Adenine, thymine, guanine and cytosine
Which bases pair up together?
Adenine pairs with thymine
Guanine pairs with cytosine
Why is DNA unique?
Because it is able to reproduce itself exactly by replication
Replication allows the genetic message to be passed on from cell to _____ and from generation to generation?
cell
RNA is composed of how many strands of nucleotides?
One
In RNA what is found in the place of thymine?
Uracil
In RNA what is found in the place of deoxyribose sugar?
Ribose sugar
The bases along a DNA strand take the form of a molecular language called...?
the genetic code
Each ____ of bases codes for a particular amino acid?
triplet
mRNA is _______ from a strand of DNA?
transcribed
Where does mRNA meet a molecule of tRNA?
At a ribosome
What do the mRNA's codons link with?
The tRNA's anticodons
What organelle bears ribosomes on its outer surface?
Rough endoplasmic reticulum
Where is freshly synthesised protein transported to via the rough ER?
The golgi apparatus
What is freshly synthesised protein packaged in?
vesicles
In addition to carbon, hydrogen and oxygen what other element does protein always contain?
nitrogen
What are the sub-units that make up proteins called?
amino acids
A molecule of _______ protein consists of parallel polypeptide chains and has a structural function?
fibrous
A molecule of _______ protein consists of polypeptide chains folded into a spherical shape?
globular
What are the functions of globular proteins?
Structural, hormones, enzymes or anitbodies
Author
Anonymous
ID
103347
Card Set
DNA, RNA and protein synthesis summary
Description
Higher Biology - DNA, RNA and protein synthesis summary
Updated
2011-09-21T17:35:22Z
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