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WorksheetsCentral Dogma Review
Total questions: 17
Worksheet time: 10mins
What opens the two strands of DNA during replication?
Ligase
Polymerase
Helicase
Amylase
According to Chargaff's rule, if there were 30 "A's" then there would be how many "C's"?
15
30
60
90
What enzyme is used to copy a piece of DNA
Polymerase
Helicase
Lipase
Which of the following forms the steps or rungs of the DNA molecule?
Deoxyribose
Ribose
Nitrogen Bases
The structure of DNA resembles a twisted ladder, also known as a double (a) .
Select all possible answers:
The "backbone" of the DNA molecule consists of what molecules?
phosphate
nitrogen bases
ribose
deoxyribose
Tiny particles that contain DNA but lack other characteristics of living cells are ____.
viruses
bacteria
algae
freshman
What contains the instructions for making a protein that are later carried by RNA?
RNA
Ribosomes
DNA
All of the above
Which of the following is true about DNA?
DNA is made of long chains of amino acids.
DNA contains the genetic information that determines the characteristics of an organism.
DNA is involved in the third part of the central dogma.
DNA travels to the cytoplasm.
DNA and RNA are both organic molecules called _______ _______.
(a)
State the central dogma of molecular biology.
DNA --> Protein --> RNA
DNA --> RNA --> Protein
RNA --> DNA --> Protein
None of the above
Translation is the process in which genetic instructions in mRNA are "read" to synthesize a protein.
True
False
The central dogma of molecular biology was proposed by Francis Cricke.
True
False
The site of formation of proteins in the cytoplasm where RNA carries the information from DNA is the ribosome.
True
False
WHat is the primary purpose of the chromosomes in a cell's nucleus?
to store the genetic code that determines an organism's traits.
to protect the cell from harmful bacteria
to transport materials into and out of the cell
to break down food and convert it into energy.
DNA is an abbreviation for deoxyribonucleic acid.
True
False
In a DNA molecule 20% of the bases are Adenine. What percent would you predict to be Cytosine?
20%
30%
40%
50%
