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Science TAKS
2009-2010
Objective 2
• What is it?
• What do I study?
• How many questions?
Objective 2
• Organization of living systems
– Cells, tissues, organs, organ systems
– Parts of cells
– DNA, replication, mutation
– Cellular respiration, photosynthesis
– Kingdoms
• Eight questions on this objective.
Objective 2
The illustration shows the transcription
process. What is the main purpose of the
structure labeled W?
F Carrying instructions for protein
synthesis
G Transforming into a protein
H Replacing damaged DNA
J Passing traits to offspring
Objective 2
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Members of the kingdom Animalia are best
described as —
F unicellular, prokaryotic, heterotrophic
G unicellular, eukaryotic, autotrophic
H multicellular, eukaryotic, heterotrophic
J multicellular, eukaryotic, autotrophic
Objective 2
The change in Statement 1 to form
Statement 2 is most similar to what type of
mutation?
F Insertion
G Deletion
H Substitution
J Frameshift
Objective 2
A mutation has occurred in an mRNA
fragment that was originally CUU. Which of
the following
mutated mRNA fragments would result in
an amino acid sequence different from that
produced by the
CUU fragment?
F CUC
G CUA
H CUG
J CAU
Objective 2
Which information would best help
scientists verify the relationships among
the organisms shown
above?
F The organisms’ nutritional requirements
G The organisms’ DNA sequences
H The organisms’ migratory patterns
J The organisms’ population sizes