Topic 1: A Hair - raising Dilemma

Question 1

Nutrients

Answer 1

• Chemicals that help your body grow and function

Question 2

Organic Nutrients

Answer 2

• Carbon containing nutrients
• Usually made by plants

Question 3

Types of Organic Molecules

Answer 3

• Carbohydrates
• Lipids
• Proteins
• Vitamens

Question 4

Carbohydrate

Answer 4

• Energy source for metabolisms
• Made up of carbon, hydrogen and oxygen atoms
  Ex. corn, spagetti

Question 5

Lipids

Answer 5

• Storage of unused chemical energy
• made up of carbon, hydrogen and oxygen atoms
  Ex. butter, oil

Question 6

Proteins

Answer 6

• Used for growth and repair
• Source of energy
• Main component of enzymes
  Ex. meat, eggs

Question 7

Enzymes

Answer 7

• Catalysts that control chemical reactions for organisms

Question 8

Vitamens

Answer 8

• Help enzymes function
• Must be obtained by diet
  Ex. Vitamin A

Question 9

Inorganic Nutrients

Answer 9

• Found in non-living things including minerals
  Ex. vitamens

Question 10

Macronutrients

Answer 10

• Mineral that body requires in amounts larger than 100mg/day

Question 11

Trace Elements/Micronutrients

Answer 11

• Mineral that body requires in amounts less than 100mg/day

Question 12

Fertilizer

Answer 12

• Substance that enriches soil so plants grow better
• Three main ingredients are nitrogen, phosphorus and potassium
• Can come from natural or synthetic chemicals
• Too much or two little will harm organisms

Question 13

Nitrogen in Fertilizer

Answer 13

• Promotes growth of plant leaves
• Called nitrates
• Makes up 18% of compounds

Question 14

Phosphorus in Fertilizer

Answer 14

• Promotes growth of roots
• Called phosphates
• Makes up 24% of compounds

Question 15

Potassium in Fertilizer

Answer 15

• Promotes growth of fruit/flowers
• Called potash
• Makes up 6% of compounds

Question 16

Passive Uptake

Answer 16

• When nutrients can enter the plants roots without the plant using energy
• Does this through diffusion and osmosis

Question 17

Diffusion

Answer 17

• Movement of molecules from an area of higher concentration to lower concentration
• Passive Uptake

Question 18

Osmosis

Answer 18

• Movement of molecules through selectively permeable membrane
• Moves from higher to lower concentration
• Passive uptake

Question 19

Active Transport

Answer 19

• When nutrients enter the plant roots with the plant using energy
• Moves from lower to higher concentration