Which sequence identifies the levels of organization of body structures in a human from simplest to most complex: cell → organ → tissue → organ system, organ system → cell → tissue → organ, tissue → organ → organ system → cell, or cell → tissue → organ → organ system?
cell → tissue → organ → organ system
A student viewing a cell with a microscope observes a cell wall, a cell membrane, and a nucleus. The presence of these structures indicates that the student is looking at a cell from a: rabbit, worm, carrot, or fly?
Dogs and cats are animals that have many similar body structures but they do not mate with each other. These two animals are classified in: the same kingdom and the same species; the same kingdom, but different species; different kingdoms, but the same species; or different kingdoms and different species?
The same kingdom, but different species
Which two systems contain the heart and the stomach: endocrine and skeletal, endocrine and respiratory, circulatory and respiratory, or circulatory and digestive?
Circulatory and digestive
Which process is responsible for the growth and repair of human tissue: evolution, cell division, germination, or natural selection?
Three cats have differences with their fur length and patterns. These differences are most likely due to: dietary habits, sexual reproduction, habitat destruction, or damage from disease?
Sexual reproduction
The hereditary material in corn plants can be altered by scientists so the plants produce more corn. Which term identifies this process: environmental degradation, ecological succession, natural selection, or genetic engineering?
Genetic engineering
How many of the following organisms are multicellular: spider, fungus, plant, and bird?
Which type of organism converts wastes and dead materials into nutrients that can be used by plants: carnivore, decomposer, herbivore, or producer?
Which factor is most likely to cause the number of rabbits living in an area to increase: less water, lack of shelter, fewer predators, or limited food?
One positive effect of recycling aluminum cans to manufacture new beverage containers is: conserving Earth’s resources, creating acid rain, warming Earth’s atmosphere, or increasing the ozone layer?
Conserving Earth’s resources
The relationship between a sea anemone and clownfish is best described as: amensalism, commensalism, mutualism, or parasitism?
A clownfish is classified as an omnivore because it eats: both plants and animals, neither plants nor animals, only plants, or only animals?
Both plants and animals
The length of one day on Earth is determined by how long it takes: the Moon to revolve once, the Moon to rotate once, Earth to rotate once, or Earth to revolve once?
Earth to rotate once
When Earth’s shadow falls on the Moon, the shadow causes a: high tide, lunar eclipse, low tide, or solar eclipse?
Earth’s hydrosphere is a layer of : rock, lava, air, or water?
All living and nonliving material is composed of : air, water, elements, or soil?
Which change is the best example of a physical change: a cookie baking, ice cream melting, paper burning, or a nail rusting?
Ice cream melting
Elements on the Periodic Table of the Elements are classified into categories such as: rocks and minerals, molecules and atoms, mixtures and compounds, or metals and nonmetals?
Metals and nonmetals
Heat transfer by conduction occurs when molecules: flow as currents through liquids, form waves that travel through space, become less dense and rise, or collide with other molecules?
Collide with other molecules
Scientists have created trains that use magnets to make the trains float above the tracks as they travel. These trains float because: the track is waxed, the like poles repel, the train has a low density, or a chemical change occurs?
The like poles repel
A sodium atom bonds with a chlorine atom to form sodium chloride. Sodium chloride is a(n): element, mixture, compound, or atom?
The actual position of a fish in water is different from the apparent position of the fish because as light travels from the water into the air, the light is: refracted, transmitted, reflected, or absorbed?
A battery-powered car pulls an 800-gram load across the floor. If the load were reduced to 400 grams, and the force used to move the car remained the same, the car would: move slower, move faster, move at the same speed, or stop moving?
Scientists have discovered fossils of the same organisms in many different parts of the world. These fossils provide evidence that: the continents were once joined together, most life-forms that existed in the past are still present today, most of Earth’s surface was once covered by molten rock, or rocks have been transformed from one type to another?
The continents were once joined together