Transcript Document

Sample TAKS Questions
Objective 2 – Living Systems
Objective 3 – Organisms and Environment
A for Cell 1; B for Cell 2
Which molecule provides most
of the energy used
to drive chemical reactions in
cells?
F DNA
G RNA
H ATP
J ADP
When a sea urchin egg is removed
from the ocean and placed in
freshwater, the egg swells and
bursts. Which of these causes
water to enter the egg?
F Coagulation
G Sodium pump
H Active transport
J Osmosis
Which of these best explains why a
freshwater aquarium would be a
dangerous habitat for saltwater fish?
A The tissues of the saltwater fish would
absorb too much acid.
B The organs of the saltwater fish would
produce too much protein.
C The organ systems of the saltwater fish
would consume too much energy.
D The cells of the saltwater fish would
gain too much water.
Saltwater fish remove extra salt from their body
by active transport through the gills. What is the
result of this activity
B Water balance is maintained in the blood.
C The rate of energy production is decreased.
D The cell membrane becomes less permeable
to water.
All of the following are found in a DNA
molecule except —
A carbon dioxide
B deoxyribose
C nitrogen
D phosphate
In DNA, which of the following
determines the traits of an
organism?
F Amount of adenine
G Number of sugars
H Sequence of nitrogen bases
J Strength of hydrogen bonds
• Which molecule is most responsible for
determining an organism’s eye color, body
structure, and cellular enzyme production?
A Complex starch
B Fatty acid
C Carbohydrate
D Deoxyribonucleic acid
• In all plant and animal cells, the nucleus
contains long molecules of DNA. Which of the
following best describes the function of DNA
F DNA provides the shape and structure of
the nucleus.
G DNA packages materials for transport
through the nucleus.
H DNA carries materials into and out of the
nucleus.
J DNA contains the blueprint for producing
the whole organism.