Q: Most oxygen in blood is bound to a protein called what, and carried to the tissues?    Choices:  - platelete  - hydrogen  - plasma  - hemoglobin  A:
hemoglobin
(Question)
Q: The three stages of transcription are initiation, elongation, and what?    Choices:  - prolongation  - separation  - degradation  - termination  A:
(Answer)
termination
Ques: Q: What corrosive substances capable of dissolving many metals can cause contamination if spilled?    Choices:  - salts  - bases  - ions  - acids  A:
Ans: acids
(Q).
Q: Structures that have lost their use through evolution are called _______    Choices:  - primordial structures  - residual structures  - symbiotic structures  - vestigial structures  A:
(A).
vestigial structures
Ques:Q: What kind of biome or climate might you find very close to the earth's poles, as well as up on high mountains?    Choices:  - tropical  - desert  - taiga  - tundra  A:

Ans:tundra
Q: What is a species that plays an especially important role in it's community called?    Choices:  - complement  - Invasive  - Leader  - keystone  A:

keystone