Biology

Question 1

Define homeostasis

Answer 1

Homeostasis is the ability to maintain constant internal conditions when outside conditions change

Question 2

How does oxygen help the body to obtain energy

Answer 2

All cells in our bodies help processing the energy and nutrients into energy that cells can use by performing cellular respiration

Question 3

How does the body transport oxygen

Answer 3

Oxygen enters the body through the respiratory system when inhaling the respiratory system works with the circulatory system to transport oxygen to all cells in the body. the muscular system also helps that respiratory system by expanding the chest so that the cells in the lungs fill up with oxygen

Question 4

How does the body transport and process wastes

Answer 4

Foods and liquids are processed by the digestive system after nutrients are absorbed during digestion the excretory System removes solid waste products through the rectum. The excretory system Also maintains liquid homeostasis liquid waste travel through the circulatory system to the kidneys needs which makes urine. liquid wastes also travel to the skin where fluid is released during sweating

Question 5

What is reflex

Answer 5

Reflex is a rapid response system that reacts to stimuli without sending information to the brain to process it

Question 6

What are hormones

Answer 6

Hormones are chemical signals released by the endocrine system allowing it to coordinate with the other body systems

Question 7

Distinguish between positive and negative feedback mechanism

Answer 7

Negative feedback is a control system that helps the body maintain homeostasis by sending a signal to stop at response while positive feedback mechanism is a control system that sends a signal to increase a response