*Question*
Answer the following question given this paragraph: A machine is any device that makes work easier by changing a force. Work is done whenever a force moves an object over a distance. The amount of work done is represented by the equation:. Q: What do you call any device that makes work easier by changing a force? Choices: - technology - invention - battery - machine A:
**Answer**
machine

*Question*
Answer the following question given this paragraph: Shape of Proteins Just as a fork cannot be used to eat soup and a spoon cannot be used to spear meat, a protein's shape is essential to its function. A protein's shape is determined, most fundamentally, by the sequence of amino acids of which it is made (Figure 2.26a). The sequence is called the primary structure of the protein. Q: A protein's shape is determined, most fundamentally, by the sequence of what type of acids? Choices: - lipids - acetic - lactic - amino A:
**Answer**
amino

*Question*
Answer the following question given this paragraph: In the solar system, the planets orbit around the Sun. The Sun and each of the planets of our solar system are round. Earth is the third planet from the Sun. It is one of the inner planets. Jupiter is an outer planet. It is the largest planet in the solar system at about 1,000 times the size of Earth. The Sun is about 1,000 times bigger than Jupiter! ( Figure below ). Q: What do the planets orbit around in the solar system? Choices: - the moon - the Earth - the Milky Way - the sun A:
**Answer**
the sun

*Question*
Answer the following question given this paragraph: The ears are also responsible for the sense of balance. Balance is the ability to sense and maintain body position. The semicircular canals inside the ear (see Figure above ) contain fluid that moves when the head changes position. Tiny hairs lining the semicircular canals sense movement of the fluid. In response, they send nerve impulses to the vestibular nerve , which carries the impulses to the brain. The brain interprets the impulses and sends messages to the peripheral nervous system. This system maintains the body's balance by triggering contractions of skeletal muscles as needed. Q: What is responsible for our sense of balance? Choices: - our eyes - our limbs - our feet - our ears A:
**Answer**
our ears