1) What is the SI unit of force? a) A) Newton b) B) Joule c) C) Watt d) D) Ampere 2) Which of these is a non-renewable energy source? a) A) Solar energy b) B) Wind energy c) C) Coal d) D) Geothermal energy 3) Which of these is the most abundant gas in Earth’s atmosphere? a) A) Oxygen b) B) Nitrogen c) C) Carbon dioxide d) D) Argon 4) What type of bond is formed when electrons are shared between two atoms? a) A) Ionic bond b) B) Hydrogen bond c) C) Covalent bond d) D) Metallic bond 5) What is the powerhouse of the cell? a) A) Nucleus b) B) Mitochondrion c) C) Ribosome d) D) Endoplasmic reticulum

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