Ques: Answer the following question given this paragraph: Steroids (or sterols) have several functions. Sterols are a subgroup of steroids. The sterol cholesterol is an important part of cell membranes and plays other vital roles in the body. Cholesterol is a precursor to fat-soluble vitamins and steroid hormones. Steroid hormones include the male and female sex hormones. Sterols also have roles as second messengers in signalling pathways. Q: Sterols are a subgroup of what? Choices: - nuclides - nutrients - antibiotics - steroids A:
Ans: steroids

Ques: Answer the following question given this paragraph: Many circuits have switches to control the flow of current through the circuit. When the switch is turned on, the circuit is closed and current can flow through it. When the switch is turned off, the circuit is open and current cannot flow through it. Q: A switch in a circuit controls the flow of what, specifically, within the circuit? Choices: - pressure - resistance - density - current A:
Ans: current

Ques: Answer the following question given this paragraph: You hit a baseball out of the park and head for first base. You're excited. The score is tied, and now your team has a chance of getting a winning home run. Then you hear a crash. Oh no! The baseball hit a window in a neighboring house. The glass has a big hole in it, surrounded by a web of cracks (see Figure below ). The glass has changed. It's been broken into jagged pieces. But the glass is still glass. Breaking the window is an example of a physical change in matter. Q: Breaking a window with a baseball is an example of what kind of change in matter? Choices: - unusual - chemical - sudden - physical A:
Ans: physical

Ques: Answer the following question given this paragraph: All living cells have certain things in common. Besides having the basic parts described above, all cells can perform the same basic functions. For example, all cells can use energy, respond to their environment, and reproduce. However, cells may also have special functions. Multicellular organisms such as you have many different types of specialized cells. Each specialized cell has a particular job. Cells with special functions generally have a shape that suits them for that job. Q: What kind of organisms have many different types of specialized cells with particular jobs? Choices: - monocellular - crude - intricate - multicellular A:
Ans:
multicellular