Question

2) Using specific examples describe the homeostasis and negative feedback in humans.

3)Define Taxonomy, nomenclature, systematics and classification. In order of sequence for the most general to the most specific, list all components of the Linnaean classification Hierarchy.

4) Using specific examples list and describe the three domains. What are some of the traits used in tracing and studying phylogeny?

Answer 1

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2) Using specific examples describe the homeostasis and negative feedback in humans.
Answer: The term homeostasis means a tendency to resist change. It is a balanced state which does not allow the state to go in either direction. Homeostasis is important to maintain the constant internal environment in the body. One of the most common and best-studied examples of homeostasis is body internal temperature control.
Negative feedback loop. The negative feedback loop operates to regulate body temperature. The receptors present in the skin and brain sense the temperature. They relay this information to the temperature-regulatory regions of the brain. This control center will then activate effectors to increase the sweat gland secretion.
Homeostasis: Condition 1: Rise in body temperature:
Blood vessels dilate, it increases the heat loss by skin. Sweat glands secrete sweat. Sweat evaporates and takes away the heat from the skin surface.
Body temperature returns to normal
Condition 2: Body temperature falls
Blood vessels contract
Sweat glands stop the fluid secretion
Involuntary muscle rigorous contraction to cause shivering, it generates heart
Body temperature brought back to normal.

3)Define Taxonomy, nomenclature, systematics, and classification. In order of sequence for the most general to the most specific, list all components of the Linnaean classification Hierarchy.
Solution:
Taxonomy is the science of naming, defining which classifies the organisms based on certain shared characteristics.
NOmenclature: It is a system of giving names to the organisms within a classification system. It provides specific scientific names based on genus and species to which an organism belongs.
Systematics: It is the science of studying the diversification of living forms, which lived in the past and which live in present. It establishes the relationship between organisms through time.
Classification: It is the science of grouping organisms belonging to a certain groups or taxa on the basis of their relationships.
Linnaeus's classification from most general to special
- Kingdom
- Class
-Order
- Genera
- Species