Answer the following question given this paragraph: Q: Which blood leaves the placenta through veins leading back to the fetus? A:
OPTIONS:
- immunity
- molecular
- pelvic
- fetal

Answer: fetal

Answer the following question given this paragraph: Roundworms have a tough covering of cuticle on the surface of their body. It prevents their body from expanding. This allows the buildup of fluid pressure in their partial body cavity. The fluid pressure adds stiffness to the body. This provides a counterforce for the contraction of muscles, allowing roundworms to move easily over surfaces. Q: Which body part helps roundworm prevent their body from expanding? A:
OPTIONS:
- scales
- plate
- skin
- tough cuticle covering

Answer: tough cuticle covering

Answer the following question given this paragraph: Carbohydrates include sugars, starches, and fiber. Sugars and starches are used by the body for energy. One gram of carbohydrates provides 4 Calories of energy. Fiber, which is found in plant foods, cannot be digested but is needed for good health. Simple carbohydrates are small carbohydrates found in foods such as fruits and milk. These carbohydrates include lactose, fructose and glucose. Complex carbohydrates are much larger molecules. Starch, which is a complex carbohydrate found in vegetables and grains, is made of thousands of glucose units bonded together. Q: What category of food includes sugars, starches and fibers? A:
OPTIONS:
- enzymes
- proteins
- alcohols
- carbohydrates

Answer:
carbohydrates