Q: Answer the following question given this paragraph:   Glucose is a substance that passes across cell membranes by facilitated diffusion. All cells need glucose for energy.   Q: All cells need what for energy?   Choices:  - oxygen  - light  - insulin  - glucose  A:
A: glucose


Q: Answer the following question given this paragraph:   The Sun is made mostly of plasma. Plasma is superheated gas with a positive electrical charge.   Q: What is defined as superheated gas with a positive electrical charge?   Choices:  - supernova  - greenhouse gas  - ion  - plasma  A:
A: plasma


Q: Answer the following question given this paragraph:   Clouds on Earth are made of water vapor. Venus's clouds are a lot less pleasant. They are made of carbon dioxide, sulfur dioxide, and large amounts of corrosive sulfuric acid! Scientists think the color of sunlight on Venus is reddish-brown.   Q: What are clouds on earth made of?   Choices:  - rain  - ozone  - carbon dioxide gas  - water vapor  A:
A: water vapor


Q: Answer the following question given this paragraph:   The lungs of mammals are unique in having alveoli . These are tiny, sac-like structures. Each alveolus is surrounded by a network of very small blood vessels (see Figure below ). Because there are millions of alveoli in each lung, they greatly increase the surface area for gas exchange between the lungs and bloodstream. Human lungs, for example, contain about 300 million alveoli. They give the lungs a total surface area for gas exchange of up to 90 square meters (968 square feet). That’s about as much surface area as one side of a volleyball court!.   Q: The lungs of mammals are unique in having what?   Choices:  - alveolar  - glands  - acini  - alveoli  A:

A: alveoli