Cells and Body Systems
What is a characteristic of MOST single-celled organisms?
They perform all life processes
What is MOST affected if the decomposers in an ecosystem are removed?
The quality of soil
A wagon is pushed in a straight line. How would an increase in friction on the wagon wheels affect the wagon?
It would cause the wagon to slow down.
A lightbulb glowing is an example of which kind of heat transfer?
Which is MOST responsible for the movement of weather systems across the United States?
The prevailing Westerlies
In what way are insects and humans similar?
Both are multicellular organisms.
What type of animal usually eats both producers and consumers?
An omnivore
A runner measured the time it took him to run 5 km. What can he calculate from the distance and time measurements?
Students observe a piece of iron change from shiny to rusty. What caused this change?
A chemical reaction
Which best describes how the Gulf Stream affects the areas along the coast of North Carolina?
It causes land temperatures along the coast to be milder in the winter.
How are the circulatory and the nervous systems similar?
A mouse eats seeds and insects. Which BEST describes the role of the mouse? Be specific!
Secondary Consumer
A mother rabbit has a litter. One of the babies is born with one long ear and one short ear. What is MOST LIKELY caused this one rabbit to be born with one short ear?
A mutation occurred during the development of this one rabbit.
Stirring a cup of hot tea causes a metal spoon to get warm. Which statement BEST explains why the spoon gets warm?
Heat energy transfers from the hot tea to the spoon.
One morning, a student notices the grass in the area is wet, although it had not rained during the night. What could have caused the grass to be wet?
When the air cooled above the ground during the night, water vapor condensed on the grass.
What is the relationship between the respiratory system and the circulatory system?
The respiratory system brings in oxygen that the circulatory system moves around the body.
What population would be affected if all the plants in an area were destroyed?
Primary consumer populations would decrease because plants provide them with energy.
If a car is moving backward along a road, can it's speed still be measured? Explain.
Yes, it can, because the car travels a distance in a certain amount of time regardless of the direction it is traveling.
Water boiling in a pot is an example of what kind of heat transfer?
Convection
Which BEST describes the cause of day-to-day weather changes?
Moving air masses
Which statement BEST explains how a bacterial cell is capable of surviving as a single-celled organism?
It has the ability to carry out all of its life functions.
What would happen to an ecosystem if all the apex predators died?
There would be an increase in the amount of secondary consumers.
Some people have a "hitchhiker's" thumb that allows them to bend their thumbs more than other people. How do these people MOST LIKELY get this trait?
They inherit it from their parents
Jason fills a glass container completely with water and screws the lid on tight. He places the container in the freezer. What will be the result?
The water in the container will expand when it freezes and cause the container to crack.
North Carolina is experiencing warmer ocean temperatures and an increased amount of hurricanes. What is MOST LIKELY the cause of this?
A La Nina weather pattern.