Science Content Knowledge Flashcards
7 cards from real STEM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Science Content Knowledge flashcards as text
Which type of bond is responsible for water's unusually high surface tension and boiling point?
Answer: Hydrogen bonds
Hydrogen bonds between water molecules create strong intermolecular attractions, giving water its high surface tension and boiling point.
What is the role of RNA polymerase during transcription?
Answer: It unwinds DNA and synthesizes a complementary mRNA strand
RNA polymerase unwinds the DNA double helix and synthesizes a complementary mRNA strand using the DNA template.
Which of the following correctly describes the difference between speed and velocity?
Answer: Velocity has direction; speed does not
Velocity is a vector quantity that includes both magnitude (speed) and direction, while speed is a scalar with magnitude only.
In which zone of the ocean does photosynthesis primarily occur?
Answer: Photic zone
Photosynthesis occurs in the photic (or euphotic) zone, where sufficient sunlight penetrates the water, typically to depths of ~200 m.
What is the net number of ATP molecules produced per glucose molecule during glycolysis alone?
Answer: 2
Glycolysis produces 4 ATP gross but consumes 2 ATP to start, yielding a net gain of 2 ATP per glucose molecule.
Which of the following correctly describes the difference between a series and a parallel circuit?
Answer: In a series circuit, all components share the same current; in parallel, voltage is the same across all branches
In a series circuit, the same current flows through all components; in a parallel circuit, the same voltage appears across all branches.
Which tectonic process is responsible for the formation of the Himalayan mountain range?
Answer: Collision of two continental plates
The Himalayas formed from the collision of the Indian and Eurasian continental plates, which caused massive crustal uplift.