Q: Glasses are mixtures of oxides, the main component of which is silica (sio2). silica is called the glass former, while additives are referred to as this? Choices: - natural modifiers - addition modifiers - glass actors - glass modifiers A:
glass modifiers

Q: Respiratory distress syndrome results from insufficient production of what? Choices: - carbon dioxide - alveoli - lung tissue - pulmonary surfactant A:
pulmonary surfactant

Q: Q: What term is defined as the preserved remains or traces of organisms that lived during earlier ages? Choices: - bones - waste - deposits - fossils A:
A: fossils

Question: Q: Mitochondria are thought to have evolved from what kind of cells? Choices: - ancient ribosome - ancient phosphorylation - ancient matrix - ancient prokaryotic A:
Answer: ancient prokaryotic

*Question*
Q: What does antifreeze do to the freezing temperature of the water in car radiators? Choices: - raises it - keeps it constant - foresees it - lowers it A:
**Answer**
lowers it

*Question*
Q: Diarrhea due to food poisoning is an example of a problem involving what organ system? Choices: - lung system - skeletal system - muscular system - digestive system A:
**Answer**
digestive system