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WorksheetsDNA
Total questions: 30
Worksheet time: 16mins
Which of the following is TRUE about the DNA molecule?
is shaped like a double helix
contains 3 types of bases
contains no sugar
only found in plants and animals
In a molecule of double-stranded DNA, the amount of adenine present is always equal to the amount of
cytosine
guanine
thymine
uracil
Which 2 molecules form the sides (backbone) of the DNA ladder?
deoxyribose sugar and adenine
deoxyribose sugar and a hydrogen bond
deoxyribose sugar and the nucleus
deoxyribose sugar and phosphate
Which organelle is DNA usually found in?
cell membrane
vacuole
chloroplast
nucleus
DNA codes for the production of
cholesterol
proteins
fatty acids
a sandwich
In eukaryotes, DNA
floats freely in the cytoplasm
is found in the nucleus
is wrapped within the ribosome
is circular
A segment of DNA that codes for a specific protein is called a _____________.
chromosome
DNA
gene
basepair
Traits are passed from one generation to the next through the transfer of
DNA
calories
ice cream cones
proteins
How should you describe DNA's shape?
a ladder twisted into a double helix
a ladder bent in half
a bench twisted into a double helix
a short stepping stool twisted into a double helix
In this diagram what is/are labeled as "A"?
genes
a chromosome
the nucleus
a base pair
What is C pointing to in this diagram?
the nucleus
the cell
a chromosome
the DNA molecule
The item labeled as D in this diagram is a chromosome. What is a chromosome?
A DNA strand that has been tightly coiled and condensed
A piece of DNA that codes for a particular trait
A stretched out DNA molecule
I don't know
If a molecule of DNA had 18 cytosine bases in it, how many guanine molecules would also have to be present
18
36
52
9
Look at this image. If blue represents a cytosine then what must orange represent?
guanine
thymine
adenine
you cannot tell
If an banana's DNA is made up of 35% adenine then what percentage of its DNA is guanine?
15%
35%
70%
impossible to calculate
The shape of DNA is called
Single helix
RNA
Double Helix
Twister ladder
Adenine (A), Thymine (T), Guanine (G), and Cytosine (C) are what part of DNA?
Phosphates
Pentose
Nucleus
Nitrogenous Bases
Which base pair is correctly matched?
AT
GT
AC
GU
Where are proteins made?
Nucleus
Cell wall
Ribosome
Vacuole
If a strand of DNA has 20% Thymine, how much Adenine will it have?
40%
20%
80%
60%
Which part of the DNA molecule controls traits?
Sugar
Bases
Phosphates
True or false: all species have the same sequence of DNA
True
False
