What Type of Feather Lacks a True Shaft and Provides

question 18

Multiple Choice

What type of feather lacks a true shaft and provides insulation for the bird?

• A) bristle
• B) down
• C) powder down
• D) semiplume

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Definitions:

Lactose

A sugar composed of galactose and glucose that is found in milk.

Polypeptide Production

The process of synthesizing polypeptides, which are long chains of amino acids, through transcription and translation of genetic information.

Initiation

The start phase in various biological and chemical processes, such as the beginning of DNA replication or protein synthesis.

Elongation

In the context of protein synthesis, elongation is the stage during which amino acids are sequentially added to the growing polypeptide chain by the ribosome.