Quiz DNA

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Quiz DNA

 

 

True/False
Indicate whether the sentence or statement is true or false.
1.
Despite years of research, the actual structure of the DNA molecule is still unknown.
2.
Franklin’s X-ray diffraction images suggested that the DNA molecule resembled a tightly coiled spring, a shape called a helix.
3.
In all living things, DNA replication must occur after cell division.
4.
Multiple DNA polymerases may become attached to more than one portion of a DNA molecule at once, speeding up the rate of replication.
5.
Before a DNA molecule can replicate itself, it must make itself more compact. This is accomplished by the double helix coiling up on itself.
 

Completion
Complete each sentence or statement.
6.
A DNA subunit composed of a phosphate group, a five-carbon sugar, and a nitrogen-containing base is called a(n) ____________________.

7.
The name of the five-carbon sugar that makes up a part of the backbone of molecules of DNA is ____________________.

8.
Watson and Crick determined that DNA molecules have the shape of a(n) ____________________.

9.
Due to the strict pairing of nitrogen base pairs in DNA molecules, the two strands are said to be ____________________ to each other.

10.
According to base-pairing rules, adenine pairs with ____________________ and guanine pairs with ____________________.

11.
The enzyme that is responsible for replicating molecules of DNA by attaching complementary bases in the correct sequence is ____________________.

12.
Enzymes called ____________________ are responsible for unwinding the DNA double helix by breaking the hydrogen bonds that hold the complementary strands together.

13.
The process by which DNA copies itself is called ____________________.

14.
Molecules of ____________________ carry instructions for protein synthesis from the nucleus to the cytoplasm.

15.
The nitrogen-containing base that is found only in RNA is ____________________.

16.
The enzyme responsible for making RNA is called ____________________.

17.
The form of ribonucleic acid that carries genetic information from the DNA to the ribosomes is ____________________.

 

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