Transport of Nutrients
Term for compounds that are essential to life but do not contain chains of carbon
All organic molecules contain what?
What are chains of carbon?
Humans artificially replace lost nutrients in soil using what?
What is fertilizer?
What is photosynthesis?
Some liquids and gases can move across a concentration gradient without using energy, this process is called...
What is diffusion?
This organic molecule is important for energy.
What is carbohydrates?
Who wrote the book "Silent Spring" to spread awareness of the environmental impacts that the insecticide DDT had in the 1960s?
Who is Rachel Carson?
A process where water moves through the parts of a plant (i.e., the leaves) and returns to the atmosphere
What is transpiration?
Water moves into plant roots by a special type of diffusion called...
What is osmosis?
The difference between one number and the next on the pH scale represents this much of a difference.
What is a ten fold difference?
Without these organic molecules our cells wouldn't be able to grow or repair themselves.
What are proteins?
Name the process of accumulation of toxins in living organisms to a concentration higher than that occurring in the inorganic, non-living environment.
What is biomagnification?
What types of animals help to release the nutrients in dead organisms return to the soil?
Sometimes nutrients must be moved against the concentration gradient which takes energy, this is called...
What is Active transport?
The reactants and products of a typical neutralization reaction?
What are an acid/base (reactants) and a salt/water (products)?
An organic molecule that speeds up reactions
What are vitamins?
What causes carbon dioxide and other gases to be artifically released back into the atmosphere at a rate much faster than what occurs in nature?
What is burning of fossil fuels?
Name two ways in which nitrogen fixation can occur?
Lightning, bacteria in soil, and the Haber-Bosch process.
What is pH indicator paper (or pH meter) Note: litmus paper is incorrect because it only tells us if it is an acid or base (not pH level).
These are needed in minor or trace amounts.
What are micronutrients?
Term for the loss of oxygen from a body of water due to fertilizer pollution
What is eutrophication?
The process of changing free nitrogen so that nitrogen atoms can combine with other elements to form compounds the organisms can use.
What is nitrogen fixation?