Who discovered electrons?
JJ Thomson
BONUS
BONUS
Makes up 20% of earth's atmosphere.
Oxygen
How many chromosomes does humans have?
23 pairs of chromosomes, total of 46
How many bones do babies have?
About 300 bones
True or False: Metal and nonmetal bonding is covalent bond.
False; it is ionic bond
F=ma
Three main types of rocks
Igneous, sedimentary, and metamorphic
BONUS
Why antibiotics won't work against viruses?
Viruses are not living and reproduce un metabolic pathways which antibiotics can't affect.
False; it is different from the properties of the reactants.
4 fundamental forces
Gravitational force, Electromagnetic force, Weak Nuclear force, and Strong Nuclear force.
Least dense layer of Earth
Crust
The sum of all chemical processes that occur in an organism is called ______.
metabolism
It has a gravitational pull so strong that even light cannot escape it.
Black hole
Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, and Iodine exist as _____ molecules.
diatomic
True or False: Newton's first law is valid in accelerating inertial frames.
False; valid only on non-accelerating inertial frames
First life on Earth
Prokaryotes (single-celled microorganism)
Cell cycle checkpoints
G1 stage, G2 stage and M stage
Most common type of galaxy in the universe.
Elliptical galaxies
iron oxide
Maxwell's equations describe ________
electromagnetic fields
State the location of our solar system in the universe
Virgo Supercluster, Local Group, Milky Way
What causes mutation?
Change in DNA Sequence
Composition of universe?
Dark energy, dark matter, and ordinary matter