Biology
What is a Cell?
A cell is the basic unit of life
What is the smallest unit of an element that retains its chemical properties?
Atom
What is the unit of force?
Nweton (N)
What does CPU stand for?
Central Processing Unit
What is respiration?
Respiration is the process by which cells convert food into energy
What particle has a negative charge?
Electron
A car travels 120 m in 10 seconds. What is its speed?
12 m/s
What device displays information from a computer visually?
Monitor
Which organ produces insulin?
Pancreas
An atom has 17 protons and 18 electrons.
-1 Because protons have a +1 charge and electrons have a −1 charge. Since it has one more electron than proton, it is a negative ion (anion).
What type of energy is stored in a stretched rubber band?
Elastic potential energy
What is phishing?
A scam where someone attempts to trick people into revealing sensitive information, often through fake messages or websites.
What is the difference between diffusion and osmosis?
Diffusion is the movement of particles from a region of low concentration to a region of high concentration. While Osmosis is the movement of water molecules from a region of low concentration to a region of high across a selectively/partially permeable membrane.
What do elements in group two have in common?
They have the same number of outer-shell electrons.
What is the formula for kinetic energy?
KE = ½mv²
What is the difference between RAM and storage?
RAM temporarily holds data being used, while storage keeps data permanently or long-term.
Explain how energy is transferred through a food chain and why less energy is available at higher trophic levels.
Energy enters a food chain when producers, such as plants, capture energy from sunlight through photosynthesis. When an organism is eaten, some of this stored energy is transferred to the organism that eats it.
However, less energy is available at each higher trophic level because organisms use much of the energy they obtain for:
An atom has 12 protons, 12 neutrons, and 10 electrons. What is the particle and its charge?
Magnesium Mg2+
Explain why increasing the mass of an object does not necessarily increase its acceleration.
Acceleration depends on both force and mass. If the force stays the same, increasing mass actually decreases acceleration.
What is the difference between a LAN and a WAN?
LAN covers a relatively small area, while a WAN connects networks across larger geographical areas.