Question Bank with Updated Solutions|
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**What is the function of the skeletal system?**
To provide support and protect internal organs.
**Which of the following is a unit of measure for electric resistance?**
Ohm
**In which part of the brain is the control center for breathing located?**
Brainstem
**What is the primary purpose of the circulatory system?**
To transport oxygen and nutrients to cells.
**Which of the following best describes the function of enzymes?**
They act as catalysts to speed up chemical reactions.
**What is the result of adding equal amounts of heat to a solid, liquid, and gas?**
The solid will melt, the liquid will evaporate, and the gas will expand.
**Which of the following is a characteristic of a virus?**
1
, It requires a host cell to reproduce.
**What is the formula for calculating the circumference of a circle?**
C = 2πr
**Which part of the atom has a positive charge?**
Proton
**What is the capital of the United States?**
Washington, D.C.
**Which of the following best describes potential energy?**
Stored energy due to position.
**What is the purpose of a circuit breaker?**
To prevent electrical overload.
**What is the pH level of a neutral solution?**
7
**What is the primary function of the liver?**
To process nutrients and detoxify substances.
2
, **Which type of rock is formed from the cooling and solidification of magma?**
Igneous rock
**What is the name of the force that opposes motion between two surfaces in contact?**
Friction
**Which of the following is the smallest unit of life?**
Cell
**What do you call the outer layer of the Earth?**
Crust
**What type of wave requires a medium to travel through?**
Mechanical wave
**What is the main purpose of DNA?**
To store genetic information.
**Which of the following is a nonrenewable resource?**
Coal
3