Answer the following question given this paragraph: Q: Like simple hormone pathways, hormone cascade pathways typically involve what kind of feedback? A:

OPTIONS:
- effective
- positive
- neutral
- negative

Answer: negative

Answer the following question given this paragraph: Figure 7.2 Axial and Appendicular Skeleton The axial skeleton supports the head, neck, back, and chest and thus forms the vertical axis of the body. It consists of the skull, vertebral column (including the sacrum and coccyx), and the thoracic cage, formed by the ribs and sternum. The appendicular skeleton is made up of all bones of the upper and lower limbs. Q: The appendicular skeleton is made up of all bones of the upper and lower what? A:

OPTIONS:
- organs
- hemispheres
- digestive tract
- limbs

Answer: limbs

Answer the following question given this paragraph: 26.4 Microscopes Although the eye is marvelous in its ability to see objects large and small, it obviously has limitations to the smallest details it can detect. Human desire to see beyond what is possible with the naked eye led to the use of optical instruments. In this section we will examine microscopes, instruments for enlarging the detail that we cannot see with the unaided eye. The microscope is a multiple-element system having more than a single lens or mirror. (See Figure 26.15) A microscope can be made from two convex lenses. The image formed by the first element becomes the object for the second element. The second element forms its own image, which is the object for the third element, and so on. Ray tracing helps to visualize the image formed. If the device is composed of thin lenses and mirrors that obey the thin lens equations, then it is not difficult to describe their behavior numerically. Q: A microscope can be made from two of what kind of lenses? A:

OPTIONS:
- inner
- angular
- outer
- convex

Answer: convex

Answer the following question given this paragraph: Q: Snow and rain are forms of what weather? A:

OPTIONS:
- sediment
- evaporation
- cold fronts
- precipitation

Answer:
precipitation