Biology Review: Unit 1

Front

What is negative feedback in biological systems?

Back

A process that counteracts a change in a system to maintain homeostasis, such as body temperature regulation.

Front

What hormone is produced by the beta cells of the pancreas?

Back

Insulin, which helps regulate blood sugar levels.

Front

What is a cell?

Back

The building blocks of all living things, serving as the basic unit of structure and function.

Front

What is an organ?

Back

A grouping of two or more types of tissue that performs a specific function in the body.

Front

What is homeostasis?

Back

The optimal balance within the body, maintaining stable internal conditions.

Front

What is the role of glucagon?

Back

A hormone that raises blood glucose levels by promoting the conversion of glycogen to glucose in the liver.

Front

What is the function of the pancreas?

Back

To produce hormones like insulin and glucagon, and to aid in digestion by producing digestive enzymes.

Front

What is an organ system?

Back

A group of organs that work together to perform complex functions in the body.

Front

What is the difference between an organ and an organelle?

Back

An organ is a structure made of tissues that performs specific functions, while an organelle is a specialized structure within a cell.

Front

What is the significance of blood clotting?

Back

A vital process that prevents excessive bleeding when injuries occur.