Q: Temperature and what other environmental factor are important in the activity of an enzyme? Choices: - size - shape - color - ph level A:
ph level

(Question)
Q: The lungs are a series of ever-narrowing tubes that end in a myriad of tiny sacs called what? Choices: - brachii - testes - glands - alveoli A:
(Answer)
alveoli

Ques: Q: Living organisms are comprised of organic compounds, which are molecules built around what element? Choices: - oxygen - silicon - helium - carbon A:
Ans: carbon

(Q).
Q: What type of energy of a system is the sum of the kinetic and potential energies of its atoms and molecules? Choices: - external energy u - primary energy u - deep energy u - internal energy u A:
(A).
internal energy u

Ques:Q: What term is used describe energy released during an earthquake? Choices: - blast - seismic load - resonance - magnitude A:

Ans:magnitude

Q: The other ammonium ions are changed into nitrogen gas by what? Choices: - fluctuations bacteria - fungi - accompanying bacteria - denitrifying bacteria A:
denitrifying bacteria