Multiple Choice
Which characteristic of life is best illustrated by the fact that moose antlers have one main beam with additional points coming from the beam?
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1. Introduction to Biology
Characteristics of Life
Multiple Choice
Which of the following statements about human hair is correct in relation to the characteristics of life?
A
The hair shaft is composed of dead cells and does not require nutrients or vitamins.
B
Hair is entirely non-biological and does not originate from living tissue.
C
The hair shaft is alive and can perform cellular respiration.
D
All parts of your hair are made of living cells that actively require nutrients.
Verified step by step guidance1
Understand the characteristics of life: Living organisms exhibit traits such as cellular organization, metabolism, growth, reproduction, response to stimuli, and adaptation. Hair's relationship to these traits will help determine the correct statement.
Clarify the structure of human hair: Human hair consists of two main parts—the hair shaft and the hair follicle. The hair shaft is composed of keratinized dead cells, while the follicle is a living structure embedded in the skin.
Analyze the hair shaft: Since the hair shaft is made of dead cells, it does not perform cellular respiration, require nutrients, or exhibit other characteristics of living tissue.
Examine the hair follicle: The follicle is a living part of the hair structure. It actively requires nutrients and supports the growth of the hair shaft, but this does not make the hair shaft itself alive.
Eliminate incorrect statements: Based on the biological understanding of hair, reject statements that claim the hair shaft is alive, entirely non-biological, or that all parts of hair are living cells. The correct statement is that the hair shaft is composed of dead cells and does not require nutrients or vitamins.
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