Answers
A ball is thrown straight up about fifty meters into the air. As the ball is traveling toward Earth
and returning to the person who threw it, which of the following is most likely to be true?
A. The speed of the ball is increasing.
B. The potential energy of the ball is increasing.
C. The mass of the ball is decreasing.
D. The frictional force of air resistance acting on the ball is decreasing. - ✔✔✔-Option (A) is
correct. As the ball is traveling toward Earth from about fifty meters, the ball is most likely
increasing in speed due to the force of gravity acting on the ball.
A battery in a circuit causes a lightbulb to glow by providing energy to which of the following in
the wires of the circuit?
A. Electrons
B. Protons
C. Heat
D. Light - ✔✔✔-Option (A) is correct. A battery in a circuit provides energy to the electrons in
the wires of the circuit. In the bulb, some of the electrical energy is converted to light.
A graduated cylinder is typically used to measure which of the following?
A. Temperature
B. Composition
C. Volume
D. Mass - ✔✔✔-Option (C) is correct. A graduated cylinder is typically used to measure volume.
Common graduated cylinders range in size from 10 mL to 1 L.
,Multiple Subjects Praxis – Science (5005) Form 1 Exam with Questions and
Answers
All the biotic and abiotic components in a specific region of Earth are called
A. a population
B. an ecosystem
C. a niche
D. a kingdom - ✔✔✔-Option (B) is correct. An ecosystem is a community of organisms (biotic
components) that interact with their environment (biotic and abiotic components).
An x-ray image is typically used to diagnose which of the following?
A. A muscle tear
B. A broken bone
C. Cardiac arrhythmia
D. Low blood-oxygen levels - ✔✔✔-Option (B) is correct. An x-ray image can reveal broken
bones through layers of skin, muscle, and other tissue.
Chloroplasts are found in the cells of which of the following organisms?
A. Clams
B. Tulips
C. Parrots
D. Starfish - ✔✔✔-Option (B) is correct. All plant and algal cells contain chloroplasts. Tulips are
plants and therefore contain plant cells and chloroplasts.
For a certain mammal, the allele associated with black fur B is dominant and the allele
associated with white fur b is recessive. An individual that is homozygous for black fur BB mates
, Multiple Subjects Praxis – Science (5005) Form 1 Exam with Questions and
Answers
with an individual that is homozygous for white fur bb. What is the probability (in percent) that
one of their offspring will have white fur?
A. 0
B. 25%
C. 50%
D. 75% - ✔✔✔-Option (A) is correct. For an offspring from a BB x bb cross to have white fur, it
must inherit a recessive b allele from each parent. A b allele will never be inherited from the BB
parent, so there is zero probability that any of the offspring will have white fur.
Fossils are most often found in which of the following kinds of rocks?
A. Metamorphic
B. Sedimentary
C. Igneous
D. Pumice - ✔✔✔-Option (B) is correct. Fossils are typically formed when organisms are buried
by sediment. As more sediment is deposited, the sediment surrounding the organism is
compacted, forming sedimentary rock that contains fossils.
Hurricanes are most likely to form over which of the following?
A. Tropical ocean water
B. Polar ocean water
C. Polar landmasses
D. Temperate landmasses - ✔✔✔-Option (A) is correct. One of the necessary conditions for
hurricanes to form and maintain their strength is a large amount of warm, moist air, which is
typically found over tropical ocean water.