Ques: Q: The physical sciences can be divided into physics and what other science? Choices: - biology - astrology - phsycology - chemistry A:
Ans: chemistry

Ques: Q: What do all respiratory diseases affect? Choices: - liquid exchange process - helium exchange process - transit exchange process - gas exchange process A:
Ans: gas exchange process

Ques: Q: What is the name of the hollow nerve cord along the back of chordates? Choices: - zetacord - mesoderm - phloem - notochord A:
Ans: notochord

Ques: Q: When the ventricles begin to contract, pressure within the ventricles rises and blood flows toward the area of lowest pressure, which is initially in the atria. this backflow causes the cusps of the tricuspid and mitral (bicuspid) valves to close. these valves are tied down to the papillary muscles by these? Choices: - chollphyide tendineae - choanocyte tendineae - photoreactive tendineae - chordae tendineae A:
Ans:
chordae tendineae