input: OPTIONS:
- mirrored
- lateral
- parallel
- radial Now, answer this question: Answer the following question given this paragraph: As mentioned earlier, echinoderms show radial symmetry. Other key echinoderm features include an internal skeleton and spines, as well as a few organs and organ systems. Although echinoderms look like they have a hard exterior, they do not have an external skeleton. Instead, a thin outer skin covers an internal skeleton made of tiny plates and spines. This provides rigid support. Some groups of echinoderms, such as sea urchins ( Figure below ), have spines that protect the organism. Sea cucumbers use these spines to help them move. Q: What type of symmetry do echinoderms show? A:
A:
output: radial

Answer the following question given this paragraph: Suspensions and colloids are two common types of mixtures whose properties are in many ways intermediate between those of true solutions and heterogeneous mixtures. Asuspension is a heterogeneous mixture of particles with diameters of about 1 m (1000 nm) that are distributed throughout a second phase. Common suspensions include paint, blood, and hot chocolate, which are solid particles in a liquid, and aerosol sprays, which are liquid particles in a gas. If the suspension is allowed to stand, the two phases will separate, which is why paints must be thoroughly stirred or shaken before use. A colloid is also a heterogeneous mixture, but the particles of a colloid are typically smaller than those of a suspension, generally in the range of 2 to about 500 nm in diameter. Colloids include fog and clouds (liquid particles in a gas), milk (solid particles in a liquid), and butter (solid particles in a solid). Other colloids are used industrially as catalysts. Unlike in a suspension, the particles in a colloid do not separate into two phases on standing. The only combination of substances that cannot produce a suspension or a colloid is a mixture of two gases because their particles are so small that they always form true solutions. The properties of suspensions, colloids, and solutions are summarized in Table 13.9 "Properties of Liquid Solutions, Colloids, and Suspensions". Q: Colloids are used industrially as what? A:

OPTIONS:
- organisms
- impurities
- solutions
- catalysts

Answer: catalysts

Problem: OPTIONS:
- flagella
- mucosa
- alveoli
- villi
Q: Answer the following question given this paragraph: The jejunum is the second part of the small intestine. This is where most nutrients are absorbed into the blood. The inside surface of the jejunum is covered with tiny projections called villi (villus, singular). The villi make the inner surface of the small intestine 1000 times greater than it would be without them. You can read in Figure below how villi are involved in absorption. Q: The inside surface of the jejunum is covered with tiny projections called what? A:
Answer: villi

Problem:OPTIONS:
- elongated
- composed
- dissolved
- fused

Answer the following question given this paragraph: Q: In certain populations, some of the chromosomes have become what? A:
****
A: fused

Answer the following question given this paragraph: Giardia are flagellate protozoa that cause giardiasis . The parasites enter the body through food or water that has been contaminated by feces of infected people or animals. The protozoa attach to the lining of the host's small intestine, where they prevent the host from fully absorbing nutrients. They may also cause diarrhea, abdominal pain, and fever. A picture of a Giardia protozoan opens this concept. Q: What are flagellate protozoa that cause giardiasis? A:
OPTIONS:
- diatoms
- fungus
- plankton
- giardia
giardia

Answer the following question given this paragraph: Wave-cut cliffs form when waves erode a rocky shoreline. They create a vertical wall of exposed rock layers. Q: What are the cliffs called which are created when waves erode a rocky shoreline, leaving a vertical wall of exposed rock layers? A:
OPTIONS:
- shear face
- widow-makers
- wave - theory
- wave-cut

Answer:
wave-cut