What is to minimize the changes in pH of the internal environment?
100
Some organelles have their own DNA that is distinct from the cell's nuclear DNA. This is true for which organelle?
What is the mitochondrion?
100
Why do ecosystems rarely contain more than a few trophic levels?
Energy transfer is too low
100
Sexual reproduction provides for what to occur?
What is genetic variation?
100
An organism is eukaryotic, multicellular, heterotrophic, and has a cell wall. To which kingdom does it belong?
What is fungi?
200
Placing wilted lettuce in cold water will make it crisp again. What happens to restore the lettuce to its original condition?
Water entered the cells of the lettuce by osmosis
200
Where does protein synthesis occur?
What are the ribosomes?
200
In the carbon cycle, atmospheric carbon dioxide is converted into organic material by which process?
What is photosynthesis?
200
Which would most likely favor species survival in changing environmental conditions?
What is genetic variation?
200
In order to maintain good health, a person's normal glucose level must remain within a given range. Which two systems control the blood glucose level?
What is endocrine and digestive?
300
Which process will move substances against a concentration gradient?
What is active transport?
300
Which organelle is nick named the "power house" of the cell?
What is the mitochondria?
300
Silt and nutrients from eroding farmland flow into a lake. As a result, which will most likely increase first?
What is algae growth?
300
Which term best describes the type of cell division in which parent cells produce daughter cells with the same number of chromosomes as the parent cells?
What is mitosis?
300
What would result in the greatest increase in human population?
What is decreased death rate and increased birth rate?
400
The bacteria that cause tetanus can survive in a puncture wound that has healed on the outer surface of the skin. Through what process do these bacteria aquire the energy they need to survive?
What is anaerobic respiration?
400
What allows the organelles to move around inside the cell?
What is the cytoplasm?
400
Recent climate data suggests a global warming trend. The most likely cause could be an increase in which gas?
What is carbon dioxide?
400
Before a cell goes through either mitosis or meiosis, which process must me carried out by the DNA in the nucleus?
What is replication?
400
An iodine solution is placed on the cut side of a potato. Within seconds, a blue-black color appears. What is most likely occurring?
What is a positive test for starches?
500
In terms of ATP production, which process results in the most stored energy?
What is aerobic respiration?
500
Which organelle synthesizes ATP?
What is the mitochondria?
500
In a forest ecosystem, which is an abiotic factor?
What is anything to deal with wind, water, soil or anything not living?
500
A segment of a DNA strand has the following bases: TAC GAT
What is the complementary strand of DNA?
What is ATG CTA?
500
A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. What has occurred?
The water in the gums has moved from a high to low concentration of water.