Biology Review: Unit 1

Front

What is positive feedback in biological systems?

Back

A mechanism that amplifies responses and processes in biological systems, leading to an increase in the output or effect.

Front

How does the liver function in regulating blood sugar levels?

Back

The liver releases glucose into the bloodstream, which increases blood sugar levels.

Front

What is homeostasis?

Back

The process by which biological systems maintain stability while adjusting to changing external conditions.

Front

List the levels of organization in the human body from smallest to largest.

Back

Cell -> Tissue -> Organ -> Organ system -> Organism.

Front

What is a cell?

Back

The basic structural and functional unit of all living organisms.

Front

What is the role of feedback mechanisms in maintaining homeostasis?

Back

Feedback mechanisms help regulate physiological processes by responding to changes in the internal or external environment.

Front

Define negative feedback in biological systems.

Back

A mechanism that counteracts a change, bringing the system back to its set point.

Front

What is the significance of tissue in the human body?

Back

Tissues are groups of similar cells that work together to perform a specific function.

Front

What are organs?

Back

Structures composed of different types of tissues that work together to perform specific functions.

Front

What is an organ system?

Back

A group of organs that work together to perform complex functions necessary for life.