Stars and Beyond
At night, we see a silver object reflecting the Sun’s light. What is Earth’s only natural satellite?
Moon
Frogs, birds, and insects all live in certain natural places. What do we call the place where an organism lives?
Habitat
Substances move in and out of the cell through a boundary. What part of the cell controls entry and exit?
cell membrane or plasma membrane
The kidneys help remove waste from the blood. What liquid waste product do they produce?
urine
To keep a beaker steady while heating, students use a stand. What part of the stand holds the beaker above the flame?
Wire gauze
One planet is the largest in our solar system. What type of planet is the largest gaseous planet in the solar system?
Jovian or Gas Giants
Mushrooms feed on decaying matter. What organisms recycle nutrients back into the soil?
Decomposers
Proteins are needed for growth and repair. What organelle assembles amino acids into proteins?
Ribosomes
Breathing allows oxygen to enter and carbon dioxide to leave the body. What tiny lung structures perform this gas exchange?
Alveoli
Small amounts of liquids are transferred using a narrow glass tube. What tool is this?
Pipette or dropper
Earth spins on its axis once every 24 hours. What does this rotation cause?
Day and Night
A remora fish attaches to a shark to get scraps of food, while the shark is unaffected. What type of symbiotic relationship is this?
Commensalism
Genetic information is passed from parent to offspring. What molecule carries this information?
DNA
There is an organ that connects the mouth and nose to both the stomach and lungs. Which organ belongs to both the digestive and respiratory systems?
Pharynx
In the lab, solutions are mixed in wide-mouthed glass containers. What glassware is used for mixing but not precise measuring?
Sometimes the Moon blocks the Sun from view. What event is this?
Solar Eclipse
Which trophic level experiences the most immediate impact when producers disappear from a food web?
Primary consumers
A rigid layer surrounds plant cells but not animal cells. What is this structure called?
Cell Wall
Blood flows from the left atrium to the left ventricle through a special heart valve. What is the name of this valve?
Mitral valve or Bicuspid valve
Mass must be measured with high accuracy in experiments. What apparatus uses three beams with sliding weights?
Triple Beam Balance
Some stars end their life cycle in a dramatic explosion. What type of star usually becomes a supernova?
Massive Star
In nature, no two species can forever use the same resources in the same way. What principle explains this phenomenon?
Gause's Law or Competitive Exclusion Principle
Some cells have whip-like structures that help them move. What are these structures called?
flagella
Some body parts remain in humans even though they have little or no function today. What are these structures generally called?
Vestigial organs
Solid substances are ground into powder for experiments. What tool is used for crushing or grinding?
Mortar and pestle