Fall Final Review Biology 2024

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms regulate their internal environment to maintain stable, constant conditions, such as temperature and pH, despite changes in the external environment.

Front

Give an example of a body process regulated by homeostasis.

Back

Blood sugar regulation is an example of a body process regulated by homeostasis.

Front

What is transcription in biology?

Back

Transcription is the process of converting DNA into RNA.

Front

What is the role of effectors in a negative feedback loop?

Back

Effectors are components that carry out responses to restore balance in the body, such as muscles and glands.

Front

What is NOT an effector in a negative feedback loop?

Back

Stomach is NOT an effector in a negative feedback loop.

Front

Why does DNA condense into chromosomes before mitosis?

Back

DNA condenses into chromosomes before mitosis to make DNA replication more efficient and to protect DNA during cell division.

Front

What is the function of melanin in humans?

Back

Melanin protects against UV radiation.

Front

Define mitosis.

Back

Mitosis is the process of cell division that results in two genetically identical daughter cells from a single parent cell.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains the sugar deoxyribose, while RNA is single-stranded and contains the sugar ribose.

Front

What is the role of enzymes in biological processes?

Back

Enzymes act as catalysts to speed up chemical reactions in the body without being consumed in the process.