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Egg Structure: Cuticle, Shell, and Pores

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Egg Structure: Cuticle, Shell, and Pores

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Questions and Answers

What is the primary function of the shell pores in an egg?

To provide mechanical strength to the shell
To regulate the temperature of the egg
To produce the cuticle layer
To facilitate exchange of gases between the embryo and outside air (correct)

What is the main component of the eggshell, making up approximately 94% of its structure?

Calcium carbonate (correct)
Calcium phosphate
Organic matter
Magnesium carbonate

What is the purpose of the chalazae in the egg albumen?

To facilitate the passage of nutrients to the embryo
To fix the yolk in its central position (correct)
To regulate the pH of the egg albumen
To provide mechanical strength to the egg albumen

What is the primary function of the air sac in the egg?

To separate the inner and outer shell membranes (D) Signup and view all the answers

What is the primary source of nutrition for the embryo in an egg?

The egg yolk (B) Signup and view all the answers

What is the primary reason for the alkalinity of egg content increasing during storage?

Loss of CO2 through the shell pores (C) Signup and view all the answers

Which type of bacteria is commonly responsible for Black rot in eggs?

Aeromonas sp. (D) Signup and view all the answers

What is the primary function of the cuticle (bloom) in egg defense?

To close the shell pores and prevent microbial invasion (C) Signup and view all the answers

What is the result of water passing from the albumin to the yolk during egg storage?

The vittelline membrane ruptures, leading to mixing of yolk with albumin (D) Signup and view all the answers

What is the primary source of microbial contamination of eggs before laying?

Congenital contamination through trans-ovarian transmission (B) Signup and view all the answers