5 Written Questions
5 Matching Questions
- half life
- gross primary production
- second law of thermodynamics
- a The amount of time it takes for one-half of the atoms to give off radiation and decay
- b Assimilation of energy by autotrophs
- c The nature of energy changes from a more-ordered to a less-ordered state if no force counteracts this tendency
- d Where nutrients remain for varying amounts of time
- e The basic unit of life's organization
5 Multiple Choice Questions
- Solutions have a pH greater than 7.
- Energy of motion
- Long chains of organic molecules called amino acids
- An increasing state of disorder. For example, burning a log of firewood transforms the log from a highly organized product into light and heat energy, gases, smoke, and carbon ash.
- Condensation of water vapor as rain or snow returns water from the air to Earth's surface
5 True/False Questions
neutrons → A atom's nucleus is surrounded by negatively charged particles
primary production → Conversion of solar energy to chemical energy by autotrophs
molecules → A atom's nucleus is surrounded by negatively charged particles
nutrients → Elements and compounds that organisms consume and require for survival. Stimulate plant production
Lack of nutrients can limit production.
Nitrogen and phosphorus are important for plant and algal growth.
sugars → Simple carbohydrates, 3-7 carbons long. Glucose: provides energy for cells