Biology
What is the definition of an organism?
Any living thing that functions as an individual/on its own
Does a proton have a positive (+) or negative (-) charge?
Positive (+)
The sum of potential and kinetic energy is called what?
Mechanical energy.
How much is the Earth tilted on its Axis?
23.4 degrees
What colour does BTB solution turn acids?
yellow
What is the function of the mitochondria?
It is the power house of the cell - generates energy for cellular processes.
How do you calculate the number of neutrons an atom has?
Neutrons = atomic mass - atomic number
A concave lens forms real or virtual images?
Virtual
How many distinct moon phases are there?
8
How do I calculate the concentration (%) of a given solution?
weight of dissolved substance (g) / Total weight of the solution (g)
Animals that that neither develop nor retain a vertebral column are called what?
Invertebrates.
Write the chemical formula for the ionic compound Lithium Sulphate
Li2SO4
How much work is done on an object that requires 11N to move 4m?
44J (or Joules)
Define a solar eclipse.
When the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth
What does DNA stand for?
Deoxyribonucleic Acid
Why is vegetative propagation called an asexual process?
Because a new plant grows from a fragment or cutting of the parent plant, so genetic information is the same as the parent.
In HCl electrolysis, what gas is made at the ANODE?
chlorine gas
Is there more potential energy at the top or the bottom of a hill?
Top of the hill.
When the height is greatest, the potential energy will be the greatest.
What is the role of decomposers in an ecosystem?
To break down dead organic matter (like starch, plant matter, animal remains, etc.)
How would you define a cold front?
Heavy rainfall in a short amount of time. After it passes, the temperature drops.
When blood is pumped, where does it reenter the heart?
Right atrium, through the superior vena cava (SVC)
Write the chemical equation for the chemical reaction at the anode in a Daniell Cell.
Zn --> Zn2+ + 2e-
Calculate the current through each resistor of a series circuit with 3 resistors (10 ohms, 20 ohms and 30 ohms each) and a power supply of 30V.
0.5A (Amps)
How do you calculate the length of day?
Time of sunset - time of sunrise
How is a P wave different from an S wave in Earthquakes?
P waves cause initial tremors and it happens fast. S waves cause major vibrations but happens more slowly.