LO. Biology Organization of Living Things

Benchmark 3

Explain the process of food storage and food use in organisms.

Carbohydrate

Fat

Protein

Nucleic Acid

Cellular RespirationCellular Respiration• Splitting glucose in the cytoplasm

• Burning food in the mitochondria when oxygen is present

• Releasing ATP energy

• Producing carbon dioxide as a waste product

Mitochondria

PHOTOSYNTHESISPHOTOSYNTHESIS• Converting light energy into food

• Exciting electrons in chlorophyll to reduce Carbon dioxide to glucose (sugar)

• Using water to replace electrons in chlorophyll

• Giving off oxygen as a waste product

Chloroplast

Cellular respirationPhotosynthesis

Oxygen, sunlight, carbon dioxide, carbohydrate, fat, protein, minerals, water.

How organisms grow

How plants store food

How food and oxygen are distributed to cells

The sun as the ultimate source of energy for organisms

Energy transformations

Key Concepts

Food storagesuch as maple tree—maple sap,

potato—starch

honey bee—honey,

cow—beef, milk

Weight gain and weight loss.

Change in respiration rates with exercise.

Real-world Contexts

http://www.biorap.org/br9/br9infact.html

http://www.umext.maine.edu/onlinepubs/PDFpubs/7036.pdf

How to tap maple trees and make maple syrup?

Select and put in sequence the following phenomena involved in photosynthesis:

1. production of carbon dioxide and carbohydrates2. production of oxygen and carbohydrates3. exposure to light4. breakdown of proteins5. intake of carbon dioxide6. intake of oxygen

A. 3-4-1

B. 4-3-2

C. 3-5-2

D. 3-6-1

A. 3-4-1

incorrect: photosynthesis uses carbon dioxide, it doesn’t produce it

Return to the question

B. 4-3-2

Incorrect: photosynthesis doesn’t involve the breakdown of proteins

Return to the question

C. 3-5-2

Correct

Return to the question

D. 3-6-1

Incorrect: photosynthesis doesn’t take in oxygen, it produces it

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