Structures & Functions of Living Organisms
Which system functions to transport messages between the brain and other parts of the body?
A. respiratory system
B. nervous system
C. digestive system
D. skeletal system
B. nervous system
Which of the following characteristics can be inherited?
A. curly hair
B. beautiful handwriting
C. multiplying numbers
D. playing a piano
A. curly hair
Which statement best describes both forest and grassland ecosystems?
A. Both are aquatic (water-based) ecosystems.
B. Both are terrestrial (land-based) ecosystems.
C. Both are made up of mostly tress.
D. Both are always found in cold places.
B. Both are terrestrial (land-based) ecosystems.
Which of the following is the best example of a new substance forming as
a result of an interaction?
A. lighting a match
B. cutting a piece of paper
C. popping a balloon
D. hitting a nail with a hammer
A. lighting a match
A car and a truck move on Interstate 40 in the same direction at the
same speed. Both vehicles slow down with the same stopping force.
Which statement best explains why the truck will need more distance than
the car to stop?
A. The truck has a larger engine than the car.
B. The truck has larger wheels than the car.
C. The truck is longer than the car.
D. The truck has more mass (weight) than the car.
D. The truck has more mass (weight) than the car.
Which of the following statements best describes unicellular organisms?
A. Unicellular organisms have transport systems between cells.
B. Unicellular organisms have many cells that must work together to perform life processes.
C. Unicellular organisms are a single cell that performs all life processes.
D. Unicellular organisms live only inside other living organisms.
C. Unicellular organisms are a single cell that performs all life processes.
Which of the following is an example of an animal's inherited behavior?
A. a cat using a liter box
B. a seal balancing a ball on its nose
C. a bird building a nest
D. a dog sitting at the command, "Sit!"
C. a bird building a nest
How are estuaries different from ponds, lakes, and oceans?
A. Estuaries contain only salt water.
B. Estuaries contain only freshwater.
C. Estuaries contain a mixture of both salt water and freshwater.
D. Estuaries are terrestrial (land-based) ecosystems.
C. Estuaries contain a mixture of both salt water and freshwater.
How does energy from the Sun impact the water cycle?
A. The Sun’s energy traps water particles in clouds.
B. The Sun’s energy changes liquid water into water vapor.
C. The Sun’s energy causes water to precipitate.
D. The Sun’s energy creates winds in the atmosphere.
B. The Sun’s energy changes liquid water into water vapor.
A pencil rolled to the edge of the table then fell to the floor. Which force
pulled the pencil toward the ground?
A. speed
B. gravity
C. friction
D. mass (weight)
B. gravity
What is the function of the cardiovascular system?
A. To provide protection to the body’s organs
B. To transport needed substances throughout the body and carry away wastes
C. To provide movement to body parts
D. To break food down into substances the body can use
B. To transport needed substances throughout the body and carry away wastes
Samantha's pet dog had puppies. Some of the puppies were brown and some were white. The father dog was brown. The mother dog was white.
Which statement best explains why some puppies were brown and some were white?
A. The puppies only inherited traits from the mother dog.
B. The puppies inherited traits from both the father dog and the mother dog.
C. The puppies only inherited traits from the father dog.
D. The puppies inherited traits from each other.
B. The puppies inherited traits from both the father dog and the mother dog.
How are mushrooms, bacteria, and worms best classified in a terrestrial (land-based)
ecosystem?
A. They are best classified as decomposers.
B. They are best classified as producers.
C. They are best classified as consumers.
D. They are best classified as both producers and consumers.
A. They are best classified as decomposers.
Jake noticed water droplets forming on the outside of a cold glass of
water on a hot, summer day. Which part of the water cycle did Jake
observe?
A. photosynthesis
B. transpiration
C. condensation
D. evaporation
C. condensation
Luis and Max left their school at 2:45 p.m. to go to the library. Luis rides
his bike at a speed of 10 miles per hour. Max rides his bike at a speed of 12
miles per hour. Which of the following is most likely to happen?
A. Luis and Max will arrive at the library at the same time.
B. Luis will arrive at the library before Max.
C. Max will arrive at the library before Luis.
D. Luis and Max will ride their bikes in two different directions.
C. Max will arrive at the library before Luis.
Why have multicellular organisms developed transport systems?
A. Cells within a multicellular organism are too small for a direct exchange of substances.
B. Cells within a multicellular organism are too far away from the environment for a direct exchange
of substances.
C. Cells within a multicellular organism are too large for a direct exchange of substances.
D. Multicellular organisms have not developed transport systems.
B. Cells within a multicellular organism are too far away from the environment for a direct exchange
Angelica speaks French fluently. Her parents and grandparents do not speak any other language besides English. How is it possible that Angelica can speak French so well?
A. Angelica inherited her knowledge of French.
B. Angelica must be a genius.
C. Angelica has a sister who speaks Spanish.
D. Angelica learned how to speak French.
D. Angelica learned how to speak French.
What information does a food chain represent about an ecosystem? 5
A. The flow of water through an ecosystem.
B. The flow of food between animals.
C. The flow of food between decomposers.
D. The flow of energy from the sun, to producers, to a series of consumers.
D. The flow of energy from the sun, to producers, to a series of consumers.
Several inches of rain fell in North Carolina during Hurricane Florence. A
few days after the hurricane, the rain had stopped but the Neuse River
continued to rise. This caused flooding in the Eastern part of the state.
Which processes are most responsible for the rising water of the Neuse
River?
A. evaporation and precipitation
B. transpiration and condensation
C. precipitation and runoff
D. transpiration and precipitation
C. precipitation and runoff
A biologist observes a bat in motion. The bat flies a distance of 2 miles. If
the biologist wants to determine the bat’s speed, what other information
does she need?
A. She needs to know the amount of time the bat flies.
B. She needs to know the direction the bat flies.
C. She needs to know the bat’s starting position.
D. She needs to know the bat’s mass while it is flying.
A. She needs to know the amount of time the bat flies.
Which body system is made up of the following structures: mouth, esophagus, stomach, and intestines?
A. digestive system
B. muscular system
C. respiratory system
D. cardiovascular system
A. digestive system
James and Ava are brother and sister. They both have dimples in their cheeks, just like their father. James has brown eyes like his father, but Ava has blue eyes like her mother.
Which statement best explain the reason for the similarities and differences in their characteristics?
A. Children only inherit characteristics from the father.
B. Children inherit some characteristics from both parents.
C. Children only inherit characteristics from the mother.
B. Children inherit some characteristics from both parents.
In a grassland ecosystem, mice and rabbits eat plants. Hawks eat mice and rabbits. Suppose a disease kills many of the rabbits in the grassland. Which of the following is most likely to occur?
A. The mice will move to another grassland.
B. The hawks will eat more mice.
C. The mice will run out of food.
D. The hawks will begin to eat plants.
B. The hawks will eat more mice.
Early one morning, Kayla notices drops of water on the outside of her
bedroom window. Later in the day, she noticed that the drops have
disappeared. What most likely caused the drops of water to disappear?
A. The water condensed on the plants around Kayla’s house.
B. Energy from the Sun caused the water to evaporate.
C. The water cooled enough to turn into water vapor.
D. Wind blowing on the window turned the water into water vapor.
B. Energy from the Sun caused the water to evaporate.
Which of the following statements best explains why it can be dangerous
to drive a car on an icy road in the winter?
A. Ice increases the force of gravity acting on a car.
B. Ice increases the mass (weight) of a car.
C. Ice reduces the friction between the car’s tires and the road.
D. Ice reduces the speed of the car.
C. Ice reduces the friction between the car’s tires and the road.