Q: What genetic unit is formed when the dna double helix wraps around proteins and tightly coils a number of times? Choices: - atom - gene - neutron - chromosome A:
chromosome

(Question)
Q: In which state of matter are particles completely separate from one another? Choices: - phosphorus state - solid state - liquid state - gaseous state A:
(Answer)
gaseous state

Ques: Q: Unlike a crystalline solid, an amorphous solid is a solid that lacks a what? Choices: - atoms - weight - color - ordered internal structure A:
Ans: ordered internal structure

(Q).
Q: Worms use a hydrostatic type of what anatomical structure to move through their environment? Choices: - gastrointestinal system - head - tail - skeleton A:
(A).
skeleton

Ques:Q: What type of protein speeds up chemical reactions in cells? Choices: - hemoglobin - lipids - collagen - enzyme A:

Ans:enzyme

Ques:Q: What device is used to stop a current in a circuit? Choices: - a signal - a valve - a mirror - a switch A:

Ans:
a switch