Ch 40 (continued) & Ch 41

Radiation

the emission of electromagnetic waves by all objects warmer than absolute zero.

Conduction

Direct transfer of thermal motion(heat) between molecules of objects in direct contact with each other.

Convection

The Mass movement of warmed air or liquid to or from the surface of a body or object.

Evaporation

the removal of heat energy from the surface of a liquid that is losing some of its molecules

Basal metabolic rate
the minimal number of kilocalories a resting animal requires to fuel itself for a give time.

Overview of food processing
1 Ingestion

A hetertrophic mode of nutrition in which other organisms or detritus are eaten whole or in pieces.

2 Digestion

The process of breaking down food into molecules small enough for the body to absorb

Proteins

a three dimension biological polymer constrcuted from a set of 20 different monomers called amino acids.

Amino acids

An organic molecule possesing both carboxyl and amino groups. Amino acids serve as the monomers of protiens.

Glycerol

central component of many lipids

Lipids

One family of compounds, including fats, phospholipids, and steroids, that are insoluble in water.

Enzymatic Hydrolysis

A catalytic decomposition of a chemical compound by reaction with water, such as the conversion of cellulosic materials into fermentable sugars by the addition of specific enzymes.

3 Absorption

The uptake of small nutrient molecules by an organism's own body

Elimination

The passing of undigested material out of the digestive compartment.

Intracellular digestion

The joining of food vacuoles and lysosomes to allow chemical digestion to occur within the cytoplasm of a cell.

Extracellular digestion

the breakdown of food outside cells.

Gastro vascular cavity

an extensive pouch that serves as the site of extracellular digestion and a passageway to disperse materials throughout most of an animal's body.

Questions:

1. Which of the following is not part of the Digestive System?

a) Absorption

b) Elimination

c) Ingestion

d) congestion

e) Digestion

2. Which of the following is a direct transfer of heat between molecules of objects in direct contact with each other?

a) Conduction

b) Evaporation

c) Convection

d) Rejection

e) Radiation

3. What is Absorption?

a) an extensive pouch that serves as the site of extracellular digestion and a passageway to disperse materials throughout most of an animal's body.

b) The uptake of small nutrient molecules by an organism's own body

c) the emission of electromagnetic waves by all objects warmer than absolute zero

d)The passing of undigested material out of the digestive compartment

e) d(^_^)z

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