Bio I -Unit 2 Test - Unit 2 Homeostasis and Feedback (All)

Front

What is Homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is a Negative Feedback Loop?

Back

A Negative Feedback Loop is a control mechanism that counteracts a change in a system, helping to maintain homeostasis. For example, when blood sugar levels rise, insulin is released to lower them.

Front

What is a Positive Feedback Loop?

Back

A Positive Feedback Loop is a process that amplifies a change in a system, moving it away from its starting state. An example is the release of oxytocin during childbirth.

Front

What role do Lysosomes play in a cell?

Back

Lysosomes are organelles that contain enzymes to digest and break down waste materials and cellular debris.

Front

What is the function of the Respiratory System?

Back

The Respiratory System is responsible for bringing oxygen into the body and expelling carbon dioxide.

Front

What are Neurons?

Back

Neurons are specialized cells in the nervous system that transmit electrical signals throughout the body.

Front

How does the body maintain temperature?

Back

The body maintains temperature through negative feedback mechanisms, such as sweating to cool down or shivering to generate heat.

Front

What is the role of the Pancreas in blood sugar regulation?

Back

The Pancreas releases insulin when blood sugar levels are high, allowing cells to absorb glucose and lower blood sugar levels.

Front

What is the function of the Circulatory System?

Back

The Circulatory System transports oxygen, nutrients, hormones, and waste products throughout the body.

Front

What are Chloroplasts?

Back

Chloroplasts are organelles found in plant cells that conduct photosynthesis, converting light energy into chemical energy.