science mid terms topic 3 focus questions

Question 1

List the levels of organization from largest to smallest and be able to give an example of each level

Answer 1

Smallest - Cell (blood cell)
Then
Tissue (muscle tissue)
Then
Organ - (heart)
Organ system - (Digestive system)

Question 2

How do multiple body systems work together to perform a task? (For example running, jumping rope, eating food)

Answer 2

Eating
Muscular (chewing)
Digestive (Break down food)
Skeletal (lift food)
Nervous (Brain telling us how to eat)
Transport - Both systems (to keep us alive)

Question 3

What would happen if an organ system stopped functioning properly?

Answer 3

Your body can no longer maintain homeostasis, you may become sick or your body systems may shut down

Question 4

What are two ways the nervous system controls body function?

Answer 4

Chemical signals are sent from the endocrine system and nervous system. (They work together)

Question 5

List two examples of stimulus and response.

Answer 5

Hot - you sweat
Cold - you shiver

Question 6

Describe the conditions in the body related to maintaining homeostasis.

Answer 6

Keeping balance
Inner ear sends signals to tell the muscular system to move and rebalance
Managing Stress
- Heart to race, you may sweat or shake
Homeostasis is the body’s way of maintaining a stable internal environment( Body temperature. Stimulus and response and keeps all organ systems working together)

Question 7

Explain how getting sick can affect the body’s ability to maintain homeostasis.

Answer 7

The body system must work together to reestablish homeostasis and fight off the bacteria or virus causing disease
Regulating of body temperature - fever /chills
Maintain water balance - dehydration
Immune system is triggered to create white blood cells

Question 8

What is the role of nutrients in your body?

Answer 8

Nutrients are the raw materials needed to help..
Body grow
Repair damaged cells
Provide energy
Perform daily functions

Question 9

What are the important nutrients your body needs to carry out its process? Describe what each does for your body. (Multiple Choice)

Answer 9

Carbohydrates - can be broken down quickly for energy
Proteins - repair and growth
Fats - long term energy
Vitamins - perform chemical reactions
Minerals - iron and calcium chemical processes
Water - hydration, digestion are needed for blood

Question 10

If you are analyzing the nutrients in a food, how would you decide if the food is healthy or not? Support your claim.

Answer 10

You can look at the daily value percentages to see which nutrients are in the food and how healthy it is. Some stuff to look at that’s on the daily value is vitamin, calcium, iron, potassium, minerals, proteins, fats (not bad) Will help me tell if it is healthy or not. unHealthy because…
Only provides one vitamin
High in added sugar
Daily percentages are low
High calories for a small amount