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| 1 | |
In order to make something move that is sitting at rest, you have to apply |
| | A) | follow Newton's second law |
| | B) | acceleration |
| | C) | an unbalanced force |
| | D) | potential energy |
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| 2 | |
Jim does 400 J of work in 2.0 seconds. Siu does 400 J of work in 3.2 seconds. In this situation |
| | A) | Siu exerts less power than Jim |
| | B) | Siu does less work than Jim |
| | C) | they both apply the same amount of force, but Siu applies it for a longer time |
| | D) | Jim lifts his object farther than Siu lifts hers |
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| 3 | |
A person does 1500 J of work lifting a box. In doing the work, they use 2500 J of energy. The efficiency of the muscles is |
| | A) | impossible to calculate without more data |
| | B) | 40% |
| | C) | 150% |
| | D) | 60% |
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| 4 | |
A teacher pushes a 27.5 kg box across a room. The box moves 9.81 m. The force the teacher applied is |
| | A) | 2.80 N |
| | B) | 270 N |
| | C) | 0.357 N |
| | D) | 27.5 N |
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| 5 | |
In order to generate ATP for use in cell activities |
| | A) | animals cells must create glucose from light, carbon dioxide, and water |
| | B) | plant cells must use glucose by reacting it with water |
| | C) | plant and animal cells use their mitochondria |
| | D) | plant cells use their mitochondria and animal cells use their chloroplasts |
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| 6 | |
Cellular respiration will not occur if |
| | A) | animal cells do not get oxygen |
| | B) | plant cells do not get glucose |
| | C) | animal cells do not get water |
| | D) | plant cells do not get plant food |
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| 7 | |
Water acts as a solvent when it |
| | A) | is dissolved in acetic acid |
| | B) | dissolves glucose |
| | C) | is mixed with vegetable oil |
| | D) | evaporates into the air |
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| 8 | |
When a human being is conceived, it is a single cell. When a human being is born, it contains a vast number of cells of many different types. In order for these changes to occur, the first cell must |
| | A) | grow in size and in number |
| | B) | increase its surface area and change its genetic material |
| | C) | undergo mitosis and differentiation |
| | D) | specialize and change its shape |
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| 9 | |
The ATP produced in cellular respiration can be used to |
| | A) | make an animal move and carry out the process of exocytosis |
| | B) | get oxygen into cells and water out |
| | C) | create glucose and move ions into the cell |
| | D) | make a plant respond to stimuli and help it seek mates |
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| 10 | |
Characteristics that can be used to separate animals from plants are |
| | A) | animals can usually move, and their cells tend to have centrioles |
| | B) | plants often ingest organic material, and their cells have chloroplasts |
| | C) | animals are multicellular, and their cells have small vacuoles |
| | D) | plants are multicellular, and their cells have cell walls |
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