Biology
What is the basic functional unit of an organism?
Cell
What is the chemical element symbol for Sodium?
Na
What force pulls objects toward the Earth?
Gravity
What gas do plants take in during photosynthesis?
Carbon dioxide (CO₂)
What is the expanded form of STEM?
Science Technology Engineering Mathematics
What is the full name of DNA?
Deoxyribonucleic Acid
Which color does the universal indicator show when an acidic solution is added?
Red, orange, and yellow
Which form of matter has a definite shape and volume?
Solid
Which element takes up the most in the composition of air (earth's atmosphere)?
Nitrogen gas (N₂)
Which planet is known as the Red Planet?
Mars
What are the four macromolecules?
Carbohydrates, Lipids, Proteins, and Nucleic acids
What is the difference between an atom and an ion?
Atoms: neutral
Ions: not neutral (have charges)
Does sound travel faster in air or in water?
List 4 biogeochemical cycles
Water cycle, nitrogen cycle, carbon cycle, and phosphorus cycle
Who wrote “Romeo and Juliet”?
William Shakespeare
List 3 differences between prokaryotes and eukaryotes
Prokaryotes: no nucleus, no membrane-bound organelles, circular DNA, smaller, binary fission
Eukaryotes: have a nucleus, have membrane-bound organelles, linear DNA, larger, mitosis, meiosis
What is the formula for the density of a solution?
Density = Mass / Volume
What is the formula for calculating Kinetic Energy?
KE = 1/2mv^2
What is the lowest level in an ecosystem?
individual
What is the hardest natural substance on Earth?
Diamond
What is the acid that is secreted after muscles get tired?
Lactic Acid
How many valence electrons does Oxygen have?
6 valence electrons
When surfaces slide or tend to slide over one another, a force of _____ happens.
Friction
What is symbiosis? Give us one example of symbiosis
Symbiosis is a close relationship between two or more different species that can benefit one or both organisms.
In what year did Christopher Columbus first reach the Americas?
1492