Answer the following question given this paragraph: Van der Waals forces are weak interactions between molecules that involve dipoles. Q: Van der waals forces are weak interactions between molecules that involve what? Choices: - atoms - particles - photons - dipoles A:
dipoles
(Question)
Answer the following question given this paragraph: Life science is the study of life and living organisms. Life science is also called biology. Q: What is another term for life science? Choices: - geology - ecology - meteorology - biology A:
(Answer)
biology
Ques: Answer the following question given this paragraph: A common disorder of the ovaries is an ovarian cyst . A cyst is a sac filled with fluid or other material. An ovarian cyst is usually harmless, but it may cause pain. Most cysts slowly disappear and do not need treatment. Very large or painful cysts can be removed with surgery. Q: What is the term for a sac filled with fluid or other material? Choices: - blister - lesion - tumor - cyst A:
Ans: cyst
(Q).
Answer the following question given this paragraph: Some metals, such as gold and platinum, do not corrode easily because they are very resistant to oxidation by common substances. Some other metals begin to be oxidized, but are further protected from additional corrosion by a coating formed on the surface. Aluminum reacts with oxygen to form aluminum oxide, which remains tightly packed on the surface. The aluminum oxide prevents the interior of the aluminum from corroding. Not all corrosion is a result of reaction with oxygen. Copper corrodes by reaction with carbon dioxide to form copper(II) carbonate. This distinctive green compound is also called patina and prevents the copper underneath from further corrosion (see Statue of Liberty in the Figure below ). Q: Some metals, such as gold and platinum, do not corrode easily because they are very resistant to what? Choices: - evaporation - precipitation - heat - oxidation A:
(A).
oxidation
Ques:Answer the following question given this paragraph: Q: What does some amphibians have as juveniles but not as adults living on land? Choices: - microscopic line system - kinetic line system - vertical line system - lateral line system A:

Ans:lateral line system
Answer the following question given this paragraph: In addition to holding cells together, tight junctions play a role in the transport of materials. Tight junctions prevent the passage of molecules and ions through the space between cells. So these molecules and ions must actually enter cells (either by diffusion or active transport) in order to proceed through a tissue. This allows tight junctions to indirectly play a role over what substances are allowed into a specific cell. Tight junctions play this role in maintaining the blood-brain barrier. Q: What can prevent the passage of molecules and ions between cells, such as in the blood-brain barrier? Choices: - fatty junctions - solid junctions - special junctions - tight junctions A:
tight junctions