How the Human Body Works

Physiology, on the other hand, looks at plants and animals at the cellular and subcellular level. It examines the constituents of the animal/plant at the cellular level, looking at the chemical, biochemical, and physiological reactions within the being which ease to sustain life. It looks at how nutrients argon broken down and employ within the body, and how waste products atomic number 18 excreted. It looks at the working of the vascular, endocrine, and lymphatic systems, their role and their requirements for life, and it is concerned with "homeostasis," or keeping the body in balance.

Behavior is the external reaction of an organism in repartee to a stimulus in its environment, and in animals is mediated by the brain and its complex system of nerves and neurotransmitters. In plants, the learn is to a greater extent dependent on chemical reactions to the environment.

2. The "scientific regularity" is a systematic, ordered approach to the gathering of data and the settlement of problems (Mosby, 1994). The basic approach is a controversy of the problem, followed by the statement of a hypothesis. An experimental method is established to help come up or disprove the hypothesis. The results of the experiment are observed, and conclusions are emaciated from the observed results. The conclusions may tend to uphold or to confound the hypothesis.

Suppose someone wondered what was killing butterflies in their garden, and noticed the butterflies died afterwards the

Psychosomatic. (1970). Taber's Cyclopedic Medical Dictionary. p. P-168.

Holden, C. (1987, September). Genes and behavior: a twin legacy. Psychology Today, pp. 18-19.

Langworthy, D. E., Stapleton, R. D., Sayler, G. S., & Findlay, R. H. (1998). Genotype and phenotype responses of a riverine microbial biotic fraternity to polycyclic aromatic hydrocarbon contamination. Applied and Environmental Microbiology, 64, pp. 3422-3428.

Genotype and phenotype are associate in that the genetic constitution determines whether a person has blue or brown eye, blond, brunette or red hair, light or dark skin, whether the person is tall or short, thin or fat. These traits are independent of environment. The relation between genotype and phenotype are often found in medicine.

For example, in cystic fibrosis, correlations are emerging between specific mutations of the gene and a patient's clinical condition. The strongest link is for pancreatic failure, and a second involves azoospermia. Mutations are beingness found in males with infertility as the sole sanctify of the disease (Tsui & Durie, 1997).

4. The genotype is the complete genetic constitution of an organism or group as determined by the accompaniment combination and location of the genes on the chromosome. The genetic information carried by a pair of alleles determines a specific characteristic, or trait, ordinarily designated by a letter or symbol, such as AA when the alleles are identical and Aa when they are different (Mosby, 1994). The term genotype also refers to the alleles situated at one or more sites on homologous chromosomes, and to a group or class having the same genetic makeup, the type species of a genus.

Tsui, L-C., Durie, P. (1997). Genotype and phenotype in cystic fibrosis. Hospital Practice, 32, pp. 115-128.

At the microbial level, a con was conducted to examine the genotypic and phenotypic responses of a riverine microbial community in the Little Scioto river to polycyclic aromatic hydrocarbon (PAH)
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