MCAS Science and Technology/Engineering Flashcards
6 cards from real MCAS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 MCAS Science and Technology/Engineering flashcards as text
Which organelle is known as the powerhouse of the cell?
Answer: Mitochondria
Mitochondria produce ATP through cellular respiration, earning the title 'powerhouse of the cell.'
What is the chemical symbol for water?
Answer: H₂O
Water's chemical formula is H₂O, meaning two hydrogen atoms bonded to one oxygen atom.
In the engineering design process, what happens after a prototype is built?
Answer: Test and evaluate
After building a prototype, the next step is to test and evaluate it to determine if it meets the design criteria.
What type of energy is stored in food and released during digestion?
Answer: Chemical energy
Food stores chemical energy in molecular bonds, which is released and converted to usable energy during digestion and metabolism.
Which planet is closest to the Sun?
Answer: Mercury
Mercury is the closest planet to the Sun in our solar system, orbiting at an average distance of about 57.9 million km.
What is the difference between a physical change and a chemical change?
Answer: Chemical changes alter the substance's identity; physical changes do not
A chemical change creates a new substance with different properties, while a physical change only alters the form or appearance without changing the substance's identity.