NAS 2 TCC STUDY GUIDE FINAL PAPER 2026
COMPLETE QUESTIONS AND ANSWERS
◉ Receptor.
Answer: Senses environment stimulus and sends info to the control
center
◉ Control Center.
Answer: Where the hypothalamus is located and the signals effector
◉ Effector.
Answer: Responds to stimuli
Example: Muscle Contracting
◉ Electron.
Answer: Negative charge particle, outer shell
◉ Proton.
Answer: Positive, nucleus
◉ Neutrons.
, Answer: no charge, nucleus
◉ Ionic Bond.
Answer: Chemical bond formed between two ions that are opposite
charges, atom gives up one or more electrons to another atom
◉ Covalent Bond.
Answer: Type of bond that has sharing electron pairs between
atoms.
◉ Hydrogen Bond.
Answer: weak bond result of attraction between proton and
electronegative atom of another
◉ Polar Bond.
Answer: pair of electrons unequally shared between two atoms
◉ Nonpolar Covalent Bond.
Answer: two atoms share a pair of electrons with each other
◉ Enzymes.
Answer: catalyze chemical reactions by lowering activation energy
barriers and converting substrate molecules to products
COMPLETE QUESTIONS AND ANSWERS
◉ Receptor.
Answer: Senses environment stimulus and sends info to the control
center
◉ Control Center.
Answer: Where the hypothalamus is located and the signals effector
◉ Effector.
Answer: Responds to stimuli
Example: Muscle Contracting
◉ Electron.
Answer: Negative charge particle, outer shell
◉ Proton.
Answer: Positive, nucleus
◉ Neutrons.
, Answer: no charge, nucleus
◉ Ionic Bond.
Answer: Chemical bond formed between two ions that are opposite
charges, atom gives up one or more electrons to another atom
◉ Covalent Bond.
Answer: Type of bond that has sharing electron pairs between
atoms.
◉ Hydrogen Bond.
Answer: weak bond result of attraction between proton and
electronegative atom of another
◉ Polar Bond.
Answer: pair of electrons unequally shared between two atoms
◉ Nonpolar Covalent Bond.
Answer: two atoms share a pair of electrons with each other
◉ Enzymes.
Answer: catalyze chemical reactions by lowering activation energy
barriers and converting substrate molecules to products