Biology STAAR: Test UPDATED ACTUAL
Exam Questions and CORRECT Answers
If a cell is in an environment that has a greater concentration of salt than the cytoplasm inside the
cell, the cell will most likely:
F: Gain Water
G: Increase in Size
H: Initiate Mitosis
J: Lose Water - CORRECT ANSWER - J: Lose Water
Which of the following is an example of molecular synthesis within a cell?
F: ATP releasing energy
G: oxygen moving across the cell membrane
H: glucose bonding to form starch
J: a cell maintaining homeostasis - CORRECT ANSWER - H: glucose bonding to form
starch
A paramecium maintains homeostasis in a hypotonic environment by allowing water to diffuse
into the cell and contracting its vacuole to pump water out of the cell. Based on this information,
which of the following is true?
A: Less energy is required for the cell to maintain homeostasis in a hypotonic environment than
in an isotonic environment.
B: Homeostasis is primarily achieved through active transport of water into the cell in a
hypotonic environment.
C: A paramecium uses more energy in a hypotonic environment than in a hypertonic
environment.
, D: More energy is required for the cell to maintain homeostasis in a hypertonic environment. -
CORRECT ANSWER - C: A paramecium uses more energy in a hypotonic environment
than in a hypertonic environment.
Glucose is a sugar that plays an important role in both plant and animal cells. Which statement
best describes the role of glucose?
F: Glucose is converted into energy through photosynthesis in plant cells.
G: Glucose is synthesized during photosynthesis in plant cells.
H: Glucose is synthesized through respiration in animal cells.
J: Mitochondria release energy by bonding glucose molecules together. - CORRECT
ANSWER - G: Glucose is synthesized during photosynthesis in plant cells.
A disease has the following characteristics:
- no self-metabolic process
- rapid reproduction
- does not respond to antibiotics
Which of the following answer choices is a possible identification of this disease?
A: Food Poisoning (E. Coli)
B: Skin Cancer
C: Sinus Bacterial Infection
D: Influenza - CORRECT ANSWER - D: Influenza
(flu = virus)
Mr. Katz researches information on how virus and bacteria compare with one another. Which of
the following would be a true generalization?
Exam Questions and CORRECT Answers
If a cell is in an environment that has a greater concentration of salt than the cytoplasm inside the
cell, the cell will most likely:
F: Gain Water
G: Increase in Size
H: Initiate Mitosis
J: Lose Water - CORRECT ANSWER - J: Lose Water
Which of the following is an example of molecular synthesis within a cell?
F: ATP releasing energy
G: oxygen moving across the cell membrane
H: glucose bonding to form starch
J: a cell maintaining homeostasis - CORRECT ANSWER - H: glucose bonding to form
starch
A paramecium maintains homeostasis in a hypotonic environment by allowing water to diffuse
into the cell and contracting its vacuole to pump water out of the cell. Based on this information,
which of the following is true?
A: Less energy is required for the cell to maintain homeostasis in a hypotonic environment than
in an isotonic environment.
B: Homeostasis is primarily achieved through active transport of water into the cell in a
hypotonic environment.
C: A paramecium uses more energy in a hypotonic environment than in a hypertonic
environment.
, D: More energy is required for the cell to maintain homeostasis in a hypertonic environment. -
CORRECT ANSWER - C: A paramecium uses more energy in a hypotonic environment
than in a hypertonic environment.
Glucose is a sugar that plays an important role in both plant and animal cells. Which statement
best describes the role of glucose?
F: Glucose is converted into energy through photosynthesis in plant cells.
G: Glucose is synthesized during photosynthesis in plant cells.
H: Glucose is synthesized through respiration in animal cells.
J: Mitochondria release energy by bonding glucose molecules together. - CORRECT
ANSWER - G: Glucose is synthesized during photosynthesis in plant cells.
A disease has the following characteristics:
- no self-metabolic process
- rapid reproduction
- does not respond to antibiotics
Which of the following answer choices is a possible identification of this disease?
A: Food Poisoning (E. Coli)
B: Skin Cancer
C: Sinus Bacterial Infection
D: Influenza - CORRECT ANSWER - D: Influenza
(flu = virus)
Mr. Katz researches information on how virus and bacteria compare with one another. Which of
the following would be a true generalization?
