Answer the following question given this paragraph: Electric potential energy comes from the position of a charged particle in an electric field. For example, when two negative charges are close together, they have potential energy because they repel each other and have the potential to push apart. If the charges actually move apart, their potential energy decreases. Electric charges always move spontaneously from a position where they have higher potential energy to a position where they have lower potential energy. This is like water falling over a dam from an area of higher to lower potential energy due to gravity. Q: What kind of energy comes from the position of a charged particle in an electric field? Choices: - solar energy - mechanical energy - thermal energy - potential energy A:
potential energy
Answer the following question given this paragraph: Q: What produces microspores that develop into pollen grains containing male gametophytes? Choices: - stems - leaves - petals - stamens A:
stamens
Q: Answer the following question given this paragraph: 34.8 Humans are mammals that have a large brain and bipedal locomotion. Q: What type of locomotion do humans have? Choices: - crawling - elongated - quadrupedal - bipedal A:
A: bipedal
Question: Answer the following question given this paragraph: Introduction to Two-Dimensional Kinematics The arc of a basketball, the orbit of a satellite, a bicycle rounding a curve, a swimmer diving into a pool, blood gushing out of a wound, and a puppy chasing its tail are but a few examples of motions along curved paths. In fact, most motions in nature follow curved paths rather than straight lines. Motion along a curved path on a flat surface or a plane (such as that of a ball on a pool table or a skater on an ice rink) is two-dimensional, and thus described by two-dimensional kinematics. Motion not confined to a plane, such as a car following a winding mountain road, is described by three-dimensional kinematics. Both two- and threedimensional kinematics are simple extensions of the one-dimensional kinematics developed for straight-line motion in the previous chapter. This simple extension will allow us to apply physics to many more situations, and it will also yield unexpected insights about nature. Q: Most motions in nature follow ________ rather than straight lines? Choices: - vertical paths - sharp paths - horizontal paths - curved paths A:
Answer: curved paths
*Question*
Answer the following question given this paragraph: The adult human skeleton has 206 bones, some of which are named below ( Figure below ). Bones are made up of living tissue. They contain many different types of tissues. Cartilage, a dense connective tissue, is found at the end of bones and is made of tough protein fibers. Cartilage creates smooth surfaces for the movement of bones that are next to each other, like the bones of the knee. Q: On what part of bones would you expect to find cartilage? Choices: - interior - marrow - exterior - end A:
**Answer**
end
(Question)
Answer the following question given this paragraph: Eukaryotes evolved about 2 billion years ago. Unlike prokaryotes, eukaryotes have a cell nucleus. They have more structures and are better organized. Organelles within a eukaryote can perform certain functions. Some supply energy; some break down wastes. Eukaryotes were better able to live and so became the dominant life form. You can see an example of a eukaryotic cell below ( Figure below ). Q: Unlike prokaryotes, eukaryotes have a what? Choices: - flagellum - cell wall - mitochondria - cell nucleus A:
(Answer)
cell nucleus