FTCE Science 2 — Questions and Answers
Question 1: A student observes that a plant grows toward a light source over several days. Which process best explains this behavior?
- Geotropism
- Phototropism (Correct answer)
- Thigmotropism
- Hydrotropism
Correct answer: Phototropism
Phototropism is the growth of a plant in response to light direction, caused by uneven auxin distribution.
Question 2: Which type of rock is formed when sediments are compressed and cemented together over time?
- Igneous
- Metamorphic
- Sedimentary (Correct answer)
- Intrusive
Correct answer: Sedimentary
Sedimentary rock forms through compaction and cementation of sediment particles like sand, silt, and organic material.
Question 3: A teacher wants students to understand Newton's Third Law. Which demonstration best illustrates action-reaction force pairs?
- A ball rolling down a ramp
- Two students pushing against each other on roller skates (Correct answer)
- A pendulum swinging back and forth
- A book resting on a table
Correct answer: Two students pushing against each other on roller skates
Two students on roller skates pushing each other demonstrates equal and opposite forces acting on both students simultaneously.
Question 4: Which organelle is responsible for producing ATP through cellular respiration in eukaryotic cells?
- Nucleus
- Ribosome
- Mitochondria (Correct answer)
- Golgi apparatus
Correct answer: Mitochondria
Mitochondria carry out cellular respiration, converting glucose and oxygen into ATP, the cell's primary energy currency.
Question 5: A student mixes baking soda and vinegar and observes bubbling. What type of change has occurred?
- Physical change
- Nuclear change
- Chemical change (Correct answer)
- Phase change
Correct answer: Chemical change
A chemical change occurred because a new substance (carbon dioxide gas) was produced and the reaction cannot be easily reversed.
Question 6: Which phase of the cell cycle involves the replication of DNA?
- G1 phase
- S phase (Correct answer)
- G2 phase
- M phase
Correct answer: S phase
DNA replication occurs during the S (synthesis) phase of interphase, ensuring each daughter cell receives a complete genome.
Question 7: The Gulf Stream is a warm ocean current that affects Florida's climate. Which best describes how ocean currents influence climate?
- They block precipitation from reaching coastal areas
- They transfer heat energy and moderate temperatures of nearby land (Correct answer)
- They cause increased volcanic activity near coastlines
- They reduce the salinity of nearby coastal waters
Correct answer: They transfer heat energy and moderate temperatures of nearby land
Ocean currents like the Gulf Stream distribute thermal energy, warming or cooling coastal regions and influencing precipitation patterns.
FTCE Science 2
A student observes that a plant grows toward a light source over several days.
Which process best explains this behavior?