Question: Answer the following question given this paragraph: membrane are nonpolar). Some examples of these are other lipids, oxygen and carbon dioxide gases, and alcohol. However, water-soluble materialslike glucose, amino acids, and electrolytesneed some assistance to cross the membrane because they are repelled by the hydrophobic tails of the phospholipid bilayer. All substances that move through the membrane do so by one of two general methods, which are categorized based on whether or not energy is required. Passive transport is the movement of substances across the membrane without the expenditure of cellular energy. In contrast, active transport is the movement of substances across the membrane using energy from adenosine triphosphate (ATP). Q: What is the movement of substances across the membrane without the expenditure of cellular energy called? Choices: - inner cell transport - immune transport - active transport - passive transport A:
Answer: passive transport

Question: Answer the following question given this paragraph: Not long after Wegener's death, scientists recognized that there is convection in the mantle. Deeper material is hotter and so it rises. Near the surface, it becomes cooler and denser so it sinks. This creates a convection cell in the mantle. Q: How does deeper material cause convection in the mantle? Choices: - remains stable - folds - sinks then rises - rises then sinks A:
Answer: rises then sinks

Question: Answer the following question given this paragraph: Ants and termites grow fungi in underground "fungus gardens" that they create. When the ants or termites have eaten a big meal of wood or leaves, they also eat some fungi from their gardens. The fungi help them digest the wood or leaves. The fungi secrete certain enzymes that the ants or termites cannot produce on their own. Q: What do ants and termites eat to help them digest wood and leaves? Choices: - pollen - berries - yeast - fungi A:
Answer:
fungi