Q: Which part of the brain regulates the rate of breathing? Choices: - brain stem - brain uptake - brain charge - brain stem A:
brain stem

Q: An atomic symbol is used to represent what? Choices: - electron shell - mole - weight - element A:
element

Q: Q: Supersaturated solutions of most solids in water are prepared by cooling what? Choices: - mineral solutions - dense solutions - plasma solutions - saturated solutions A:
A: saturated solutions

Question: Q: Flow of what can introduce alleles that are advantageous or ones that are disadvantageous? Choices: - babies - eggs - larvae - genes A:
Answer: genes

*Question*
Q: Cellular respiration in humans involves the combustion of what simple sugar? Choices: - starch - glutamate - insulin - glucose A:
**Answer**
glucose

(Q).
Q: It was not until the era of the ancient greeks that we have any record of how people tried to explain the chemical changes they observed and used. at that time, natural objects were thought to consist of only four basic elements: earth, air, fire, and this? Choices: - sky - soul - grass - water A:
(A).
water