Q: Which of the following best describes the purpose of cellular respiration? OPTIONS:
- to provide energy for cell activities
- to produce sugar for storage in cells
- to release oxygen for breathing
- to supply carbon dioxide for photosynthesis
A: to provide energy for cell activities

Q: Tobias rode his bike on a road for a 2 hr period. On average, he passed a 1 km marker every 3 min during this period. Which of the following was his average speed for this 2 hr period? OPTIONS:
- 10 km/hr
- 15 km/hr
- 20 km/hr
- 25 km/hr
A: 20 km/hr

Q: What do scientists mean when they refer to a population? OPTIONS:
- all the organisms in an ecosystem
- all the species that share similar anatomical features
- all the animals that acquire resources through similar methods
- all the interbreeding members of a certain species in an ecosystem
A: all the interbreeding members of a certain species in an ecosystem

Q: Earthquake waves are recorded by seismograph machines. What does an earthquake wave transmit? OPTIONS:
- energy
- light
- particles
- speed
A:
energy