Bio Practice 11/20

Front

What is homeostasis?

Back

Homeostasis is the process by which biological systems maintain a stable internal environment despite external changes.

Front

What role do feedback mechanisms play in homeostasis?

Back

Feedback mechanisms help regulate physiological processes by adjusting the release of hormones based on changes in the internal environment.

Front

What is the function of insulin in blood glucose regulation?

Back

Insulin is a hormone that promotes the uptake of glucose by cells, particularly in the liver, to lower blood glucose levels.

Front

What is the function of glucagon in blood glucose regulation?

Back

Glucagon is a hormone that stimulates the release of glucose from the liver into the bloodstream, raising blood glucose levels.

Front

How do insulin and glucagon work together?

Back

Insulin and glucagon work in opposition to maintain blood glucose levels; insulin lowers glucose levels while glucagon raises them.

Front

What is the significance of genetic variation?

Back

Genetic variation is important for evolution and adaptation, allowing populations to respond to environmental changes.

Front

How does UV radiation influence skin pigmentation?

Back

UV radiation can lead to variations in skin pigmentation by affecting the production of melanin, which protects against UV damage.

Front

What is the central dogma of molecular biology?

Back

The central dogma describes the flow of genetic information from DNA to RNA to protein.

Front

What is transcription in the context of protein synthesis?

Back

Transcription is the process of copying a segment of DNA into mRNA, which carries the genetic information to ribosomes.

Front

What is translation in the context of protein synthesis?

Back

Translation is the process by which ribosomes synthesize proteins using the information carried by mRNA.