Life Science
This organelle contains enzymes that break down waste and worn-out cell components.
What is the lysosome?
This number represents the number of protons in an atom.
What is the atomic number?
This is the layer of Earth made primarily of solid iron and nickel.
What is the inner core?
This is the closest star to Earth.
What is the Sun?
This chamber of the heart pumps oxygenated blood into the systemic circulation.
What is the left ventricle?
During which stage of mitosis do chromosomes line up along the cell's equator?
What is metaphase?
What type of bond forms when atoms share electrons?
What is a covalent bond?
Rock formed from cooled and solidified magma or lava is classified as this.
What is igneous rock?
A light-year measures this, not time.
What is distance?
This structure connects muscle to bone and transmits the force of muscle contraction.
What is a tendon?
A mutation changes a codon from coding for an amino acid to a stop codon. What type of mutation is this?
What is a nonsense mutation?
If a solution has a pH of 3, how many times more acidic is it than a solution with a pH of 5?
What is 100 times?
This scale measures mineral hardness from talc to diamond.
What is the Mohs scale?
What primarily causes the phases of the Moon?
What is the changing portion of the Moon's sunlit side visible from Earth?
In the nephron, this structure is primarily responsible for filtering blood and forming the initial filtrate.
What is the glomerulus?
In a food web, removing a top predator causes the herbivore population to increase dramatically. What ecological phenomenon does this demonstrate?
What is a trophic cascade?
A reaction that absorbs heat from its surroundings is called this.
What is endothermic?
When two tectonic plates move away from each other, the boundary is called this.
What is a divergent boundary?
A star's spectrum is shifted toward longer wavelengths as it moves away from us. What is this called?
What is redshift?
Which cranial nerve is responsible for most parasympathetic control of the heart, lungs, and digestive tract?
What is the vagus nerve (CN X)?
In a population at Hardy-Weinberg equilibrium, the frequency of a recessive allele is 0.3. What percentage of the population is expected to be heterozygous?
What is 42%?
(2pq = 2(0.7)(0.3) = 0.42)
What is the molarity of a solution containing 0.50 moles of NaCl dissolved in 2.0 liters of solution?
What is 0.25 M?
A mineral scratches a glass plate but is scratched by quartz. Approximately what hardness does the mineral have on the Mohs scale?
What is 6–7?
Why can a star with greater mass generally fuse elements at a faster rate than a lower-mass star?
What is greater gravitational pressure and temperature in its core?
Oxygen binds to this protein in red blood cells, allowing it to be transported through the bloodstream.
What is hemoglobin?