Difficulty: Medium

Average Score: 64%

Which is an example of the correct organizational hierarchy for a wolf?

Rationale

DNA, blood cell, muscle tissue, heart, circulatory system, wolf.

This sequence accurately reflects the organizational hierarchy of biological structures, starting from the molecular level (DNA) and progressing through cells, tissues, organs, systems, and finally the organism itself (wolf).

A (Muscle tissue, blood cell, DNA, organ, circulatory system, wolf) YOUR ANSWER

This choice incorrectly begins with muscle tissue, which is a type of tissue made up of cells. It fails to follow the proper sequence as it places DNA after muscle tissue, disrupting the hierarchical organization from the smallest unit (DNA) to the whole organism (wolf).

B (DNA, blood cell, muscle tissue, heart, circulatory system, wolf) CORRECT

This option correctly presents the hierarchy, starting with DNA, the fundamental unit of genetic information. It progresses logically through blood cells (the basic unit of life), to muscle tissue (a collection of cells), then to the heart (an organ), followed by the circulatory system (a system of organs), and culminates with the wolf (the complete organism).

C (Circulatory system, DNA, muscle tissue, blood cell, heart, wolf) YOUR ANSWER

This choice starts with the circulatory system, which is an organ system, thus disrupting the progression from the most basic unit to the most complex structure. The hierarchical organization must begin at the molecular level with DNA before moving to cells, tissues, and larger structures.

D (Blood cell, organ, circulatory system, muscle tissue, DNA, wolf) YOUR ANSWER

This selection incorrectly organizes biological structures, starting with blood cells and jumping to organs without acknowledging the hierarchical order. It also places DNA at the end of the sequence, which is not consistent with the correct organization from smallest to largest.

Conclusion

Understanding the correct organizational hierarchy in biology is crucial for grasping the complexity of living organisms. The sequence of DNA, blood cell, muscle tissue, heart, circulatory system, and wolf accurately represents the nested structure of life, illustrating how each level is built upon the previous one to form a complete organism.

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