Cell Requirements

Question 1

Light Energy - Plants (Photosynthesis)

Answer 1

Plants use sunlight to obtain energy using photosynthesis

                                       Sunlight Carbon dioxide + Water      →           Glucose + Oxygen
                                     Chlorophyll

Although photosynthesis is often represented by this general equation, it is a series of many chemical reactions.

Question 2

Carbohydrates
(Chemical Energy in Organic Molecules)

Answer 2

(sugars and starch- mono, di & polysaccharides)

Sugars provide the energy for cellular respiration, starch stores excess sugar in plants, glycogen stores sugar in animals, and cellulose and lignin are used in plant cell walls.

Question 3

Proteins
(Chemical Energy in Organic Molecules)

Answer 3

Made from amino acid chains and used for the chemical structure of cells, bones, skin, hair, part of membranes, and enzymes that control the rate of chemical reactions.

Question 4

Lipids
(Chemical Energy in Organic Molecules)

Answer 4

(fats and oils)
Formed from carbohydrates to store excess energy, for structure of membranes and hormones.

Question 5

Nucleic Acids
(Chemical Energy in Organic Molecules)

Answer 5

(DNA & RNA)

DNA holds genetic information and RNA is the messenger sent out to control cellular activity.