A large molecule of DNA is composed of smaller molecules called:
Which one of the following nucleotide base pairs would be found in a DNA
cytosine – uracil
adenine – guanine
guanine – cytosine
adenine – cytosine
A DNA nucleotide may be made up of a phosphate group, along with:
Deoxyribose sugar and thymine
Ribose sugar and cytosine
Deoxyribose sugar and uracil
Ribose sugar and adenine
Refer to this diagramme for #4.
What part of a nucleotide is labeled “A” on the DNA molecule above?
In a portion of a gene, the nitrogenous base sequence is T-C-G-A-A-T. What is
the complementary DNA sequence that normally bonds to this section of the gene?
Watson and Crick described the DNA molecule as a:
The process of DNA replication is necessary before a cell:
Makes a protein.
Codes for RNA molecules.
Divides its nucleus into two.
Modifies lysosome enzymes.
The process by which a DNA molecule is copied is called:
DNA replication results in:
A single identical double-stranded molecule.
Two different double-stranded molecules.
A single different double-stranded molecule.
Two identical double-stranded molecules.
Which of these is responsible for carrying coded information from the nucleus?
Refer to this diagramme for #11.
Use the codon chart supplied to you to answer this question.
Determine the correct polypeptide strand if the mRNA strand contains the
UGC AGG CAU CGA
cys arg his arg
gin asp glu stop
thr ser val ala
leu pro arg gly
A scientist compared the genes and proteins from a root cell and a leaf cell of
a single apple tree. What will the scientist observe about the cells?
They have the same set of genes but different sets of proteins.
They have the same set of genes and the same set of proteins.
They have different sets of genes but the same set of proteins.
They have different sets of genes and different sets of proteins.
Refer to this diagramme for #13.
The diagram above shows the steps in producing a protein. Where in the cell does
step 2 occur?
Refer to this diagramme for #14 and #15.
The diagramme above represents a portion of a type of organic molecule present
in all cells of all organisms.
What will most likely happen if there is a change in the base sequence of this
The molecule will be converted into an inorganic compound.
The amino acid sequence may be altered during protein synthesis.
The chromosome number will decrease in future generations.
The chromosome number may increase within the organism.
How do cells use the genetic information within this molecule?
DNA is broken down and used by mitochondria to manufacture ATP.
DNA is transcribed into RNA, which is used to manufacture proteins.
DNA is copied and used by chloroplasts to manufacture glucose.
DNA is translated and used to manufacture cell organelles.
Refer to this diagramme for #16.
Use the codon table supplied to you to answer this question. A normal portion of
a gene in DNA reads AAA/TGT/CGA/CCA.
The DNA is exposed to chemicals that cause mutations. Which of the DNA mutations
shown below will cause a change in the amino acid sequence?
AAA to AAG
TGT to TGG
CCA to CAA
CGA to CGG
Refer to this diagramme for #17.
Which of the following is the correct sequence for plant cell mitosis in the
A B C D
B C A D
C B A D
D A B C
Although mitosis ends with two identical diploid cells, meiosis ends with:
Four identical diploid cells.
Four genetically different diploid cells.
Four identical haploid cells.
Four genetically different haploid cells.
Meiosis occurs during the production of:
These questions will cover material from prior units, and are similar to questions that are likely to appear on the SOL.
Orchids were studied to determine if the amount of humidity affected the
flowering of these plants. Which of these was the independent variable in this
The amount watered.
The percentage of humidity.
The length of time required for flowering.
The number of flowers on each plant.
Refer to this diagramme for #21.
The picture shows some containers of different foods that were left in the open
for 2 days. Which question could most realistically be answered by this
How does a fly digest different foods?
How much energy do flies get from different foods?
Which food attracts flies from the greatest distance?
Which food attracts the most flies?
Refer to this diagramme for #22.
This graph shows the sizes of lynx (large predatory cat) and hare (similar to a
rabbit) populations between the years of 1845 and 1940. If a predator of the
lynx enters the food chain, you might expect the number of...
lynx and hares to become equal.
lynx to increase.
hares to increase.
hares and lynx to decrease.
Refer to this diagramme for #23.
In this figure, as matter and energy move from grasses to coyotes, the amount of
Decreases then increases.
Increases or decreases, but population size remains the same.
Refer to this diagramme for #24.
In the cell membrane model shown above, the molecules which move large molecules
into and out of the cell are known as:
Refer to this diagramme for #25.
Which factor would need to be known before a valid conclusion could be based
upon the data shown above?
The length of the study period.
The original average height of grass.
The density of the phosphate solutions
The mineral content of the potting soil.
Respond to all open-ended questions as completely as possible. Full sentences are encouraged, but not required.
During which phase of the cell cycle does DNA replication take place? Be
Why does DNA replication take place? (1)
Draw and label the DNA nucleotide. (4)Use the largest text possible.
Complete the chart below for Transcription and Translation. (6)Use the largest
Refer to this diagramme for #29.
Beginning with Cell D, write the correct order for the cells above that are
going through mitosis. (5)
In the Venn diagramme below, compare and contrast mitosis and meiosis. Include
the processes as well as the end products of each. (6)Use the largest text
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