Introduction:
Zoology is the scientific study of animals, their behavior, evolution, classification, and physiology. It encompasses various sub-disciplines such as ecology, anatomy, genetics, and physiology. While a strong understanding of cell biology and biochemistry may not be directly essential for every aspect of zoology, it plays a crucial role in understanding the fundamental processes and mechanisms that underlie the functioning of organisms at the cellular and molecular levels.

Key Points:
1. Understanding Cellular Structure and Function:
- Cell biology provides a foundation for understanding the structure and function of cells, which are the building blocks of all living organisms, including animals.
- Knowledge of cell biology enables zoologists to study the cellular processes such as cell division, metabolism, and communication, which are essential for the growth, development, and functioning of animals.

2. Investigating Animal Physiology:
- Biochemistry is the study of chemical processes within and related to living organisms. It helps in understanding the physiological processes occurring in animals at the molecular level.
- A strong grasp of biochemistry is crucial to comprehend the metabolic pathways, enzyme kinetics, and biochemical reactions that regulate various physiological processes in animals.
- It aids in studying animal nutrition, energy metabolism, hormone regulation, and the functioning of organ systems.

3. Exploring Animal Behavior and Evolution:
- Cell biology and biochemistry contribute to understanding the genetic and molecular basis of animal behavior and evolution.
- Molecular genetics explores the inheritance and expression of genes, which influence the traits and behaviors of animals.
- Knowledge of cellular processes and biochemistry helps in studying the genetic variation, gene expression, and molecular mechanisms underlying animal behavior and evolutionary processes.

Conclusion:
While not every aspect of zoology may require an in-depth understanding of cell biology and biochemistry, these disciplines provide a strong foundation for investigating the cellular and molecular processes that underpin the functioning, physiology, behavior, and evolution of animals. Therefore, a solid grasp of these subjects can greatly enhance a zoologist's ability to comprehend and contribute to the field of zoology.