Cells
What organelle controls the activities of an animal cell and contains its genetic material?
Nucleus
What subatomic particle has a positive charge?
Proton
Which state of matter has particles that are far apart and move randomly?
Gas
What is the equation used to calculate magnification?
Magnification = Image size / actual size
What is the name of the blue and green van used by the Scooby Doo gang?
The Mystery Machine
What organelle is the site of aerobic respiration and releases energy for the cell?
Mitochandria
What type of ion forms when an atom loses electrons?
Cation
What happens to gas particles when the temperature of a sealed container decreases?
They move more slowly and have less kinetic energy
An image is 40 mm long and the actual organism is 10 mm long. What is the magnification?
4x
What country does Halloween come from?
The Celtic celebration in Ireland and Scotland
A cell is 0.025 mm long. Convert this measurement into micrometres (µm).
25µm
In ionic bonding between magnesium and oxygen, how many electrons does magnesium transfer to oxygen?
2 e-
A gas has a volume of 250 cm³. Convert this volume into dm³.
0.250 dm3
A micrometer screw gauge has a main scale reading of 4.5 mm and a thimble reading of 0.28 mm. What is the diameter of the object?
4.78 mm
On average, how many seeds are there in a pumpkin?
500
What adaptation of a root hair cell increases its ability to absorb water from the soil?
A large surface area
Magnesium has an electron configuration of 2,8,2 and oxygen has 2,6. What ions form when they bond, and what is the formula of the compound?
Mg2+ and O2-, MgO
Nitrogen has a boiling point of approximately −196°C and oxygen has a boiling point of approximately −183°C. At −190°C, which substance is a liquid and which is a gas?
Nitrogen is a gas; oxygen is a liquid.
In a graph, which variable is normally placed on the x-axis?
The independent variable
What is the name of the villain in the movie “The Nightmare Before Christmas”?
Oogie Boogie
A cell has many chloroplasts and is located in a plant leaf. What is its main function, and why are the chloroplasts important?
Photosynthesis; chloroplasts contain chlorophyll that absorbs light energy
A student measures the concentration of a pollutant as 0.00072 g/dm³. Convert this concentration into mg/dm³.
0.72 mg/dm³
A river site has very low species diversity and only a few pollution-tolerant organisms. What can you infer about the environmental conditions? Explain your reasoning.
The site is likely to be polluted or otherwise environmentally stressed because sensitive species are absent and only tolerant organisms remain.
In an investigation, a student changes the amount of light and measures the response of phytoplankton. What is the dependent variable?
The response of the phytoplankton
What's another name for a lycanthrope?
A werewolf!