STEM Concepts Flashcards

7 cards from real BCA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 STEM Concepts flashcards as text

An object is dropped from rest and falls for 3 seconds (ignoring air resistance). How far has it fallen? (g = 10 m/s²)
Answer: 45 m
Using d = ½gt² = ½ × 10 × 9 = 45 m.
Which process in cells converts glucose into pyruvate without using oxygen?
Answer: Glycolysis
Glycolysis is the anaerobic breakdown of glucose into two pyruvate molecules, occurring in the cytoplasm.
In statistics, which measure of central tendency is most affected by extreme outliers?
Answer: Mean
The mean is computed by summing all values and dividing by count, so a single extreme value shifts it significantly.
What does the acronym 'DNA' stand for?
Answer: Deoxyribonucleic acid
DNA stands for deoxyribonucleic acid, the molecule that carries genetic instructions in living organisms.
Which sorting algorithm has a worst-case time complexity of O(n²)?
Answer: Bubble sort
Bubble sort compares adjacent elements repeatedly, giving it O(n²) time complexity in both average and worst cases.
Which electromagnetic waves have the highest frequency in the spectrum?
Answer: Gamma rays
Gamma rays have the highest frequency (and shortest wavelength) in the electromagnetic spectrum.
In algebra, if f(x) = 2x² − 3x + 1, what is f(2)?
Answer: 3
f(2) = 2(4) − 3(2) + 1 = 8 − 6 + 1 = 3.