Fun Science Challenge

What is the process by which plants make their food?

• Transpiration

• Respiration

• Digestion

• Photosynthesis

What gas do living beings need to breathe?

• Nitrogen

• Oxygen

• Carbon Dioxide

• Hydrogen

1. Why does an athlete breathe faster and deeper than usual after finishing the

   race?

• lactic acid accumulates in the muscle cells

• Because we need more carbon dioxide

• WWe need more water

• We need it simply

What is respiration?

• Breakdown of water in cells

• Release of energy from food

• Exchange of gases in lungs

• Absorption of carbon dioxide

What helps in the breakdown of food in cells

during respiration?

• Carbondioxide

• Oxygen

• Water

• Light

What part of the plant absorbs water and nutrients from the soil?

• Stems

• Roots

• Leaves

• Flowers

What is aerobic respiration?

• Respiration with oxygen

• Breathing rate

• Respiration without oxygen

• Cellular respiration

Which organisms respire anaerobically?

• Humans

• Yeast

• Frogs

• Plants

What is the by-product of anaerobic respiration in muscles

• Oxygen

• Lactic acid

• Alchohol

• Glucose

What is the name of the chemical that gives plants their green color?

• xanthophyll

• anthocyanin

• carotene

• chlorophyll