Semester 1 Review and Ap Exam
REview
• Extensive irrigation in arid regions causes salts
to accumulate in the soil. (When water
evaporates, salts that were dissolved in the
water are left behind).
• Based on what you have learned about water
balance in plant cells, explain why increased
soil salinity might be harmful to crops. Science
vocab
• The soil immediately around hot springs is
much warmer than in neighboring regions.
Two closely related species of native grasses
are found, one in the warmer region and one
in the cooler region. If you analyzed their
membrane lipid compositions, what would
you expect to find? Explain 5 pts
• A biologist ground up some plant leaf cells and
then centrifuged the mixture to fractionate the
organelles. Organelles in one of the heavier
fractions could produce ATP in the light, whereas
organelles in the lighter fraction could produce
ATP in the dark. The heavier and lighter fractions
are most likely to contain, respectively,
• mitochondria and chloroplasts.
• B) chloroplasts and peroxisomes.
• C) peroxisomes and chloroplasts.
• D) chloroplasts and mitochondria.
• E) mitochondria and peroxisomes
• A biologist ground up some plant leaf cells and
then centrifuged the mixture to fractionate the
organelles. Organelles in one of the heavier
fractions could produce ATP in the light, whereas
organelles in the lighter fraction could produce
ATP in the dark. The heavier and lighter fractions
are most likely to contain, respectively,
• mitochondria and chloroplasts.
• B) chloroplasts and peroxisomes.
• C) peroxisomes and chloroplasts.
• D) chloroplasts and mitochondria.
• E) mitochondria and peroxisomes
Must Knows
•
•
•
•
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Enzymes in genetics:
DNA polymerase
Ligase
Helicase
topoisomerase
Answer is B
Answer is C
Must Knows
• Biotechnology:
– Techniques
– Terminology
– PCR
– Cloning
– Gel electrophoresis
– RFLP Analysis
Answers
C
D
B
A
Answer is D.