Answer the following question given this paragraph: The ocean floor is home to many species of living things. Some from shallow water are used by people for food. Clams and some fish are among the many foods we get from the ocean floor. Some living things on the ocean floor are sources of human medicines. For example, certain bacteria on the ocean floor produce chemicals that fight cancer. Q: Some living things on the ocean floor are sources of what human necessity? Choices: - hormones - steroids - pesticides - medicines A:
medicines
(Question)
Answer the following question given this paragraph: Distillation is an effective method to separate mixtures comprised of two or more pure liquids. Distillation is a purification process where the components of a liquid mixture are vaporized and then condensed and isolated. In simple distillation, a mixture is heated and the most volatile component vaporizes at the lowest temperature. The vapor passes through a cooled tube (a condenser), where it condenses back into its liquid state. The condensate that is collected is called distillate. Q: What is a purification process where the components of a liquid mixture are vaporized and then condensed and isolated? Choices: - conduction - sterilization - dispersion - distillation A:
(Answer)
distillation
Ques: 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:
Ans: glucose
(Q).
Answer the following question given this paragraph: Some prokaryotes form structures consisting of many individual cells, like the cells in Figure below . This is called a biofilm. A biofilm is a colony of prokaryotes that is stuck to a surface. The surface might be a rock or a host's tissues. The sticky plaque that collects on your teeth between brushings is a biofilm. It consists of millions of prokaryotic cells. Q: A biofilm is a colony of prokaryotes that is stuck to what? Choices: - the middle - the bottom - skin - surface A:
(A).
surface
Ques:Answer the following question given this paragraph: Like transverse waves, longitudinal waves are mechanical waves, which means they transfer energy through a medium. Unlike transverse waves, longitudinal waves cause the particles of medium to move parallel to the direction of the wave. They are most common in springs, where they are caused by the pushing an pulling of the spring. Although the surface waves on water are transverse waves, fluids (liquids, gases, and plasmas) usually transmit longitudinal waves. Q: Two important types of waves include longitudinal waves and what other kind? Choices: - phenomena - slow - irregular - transverse A:

Ans:transverse
Ques: Answer the following question given this paragraph: Some mirrors have a curved rather than flat surface. Curved mirrors can be concave or convex. A concave mirror is shaped like the inside of a bowl. This type of mirror forms either real or virtual images, depending on where the object is placed relative to the focal point. The focal point is the point in front of the mirror where the reflected rays intersect. You can see how concave mirrors form images in Figure below and in the interactive animation at the URL below. The animation allows you to move an object to see how its position affects the image. Concave mirrors are used behind car headlights. They focus the light and make it brighter. They are also used in some telescopes. Q: The point in front of a mirror where the reflected rays intersect is known as what? Choices: - reflective point - boundary point - periodic point - focal point A:
Ans:
focal point