Homeostasis Review Quiz

What type of Feedback Mechanism

Baby pushes on the mother’s cervix, causing the ​ mother’s hypothalamus to signal oxytocin release from the posterior pituitary. This leads to uterine contractions. Oxytocin level continues to rise until the baby is born. ​ (a)  

• Positive
• Negative

Tags

NGSS.HS-LS1-3

What type of feedback mechanism?

Thymosin is a hormone that increases T-lymphocyte production. A high T-lymphocyte count causes the thymus to stop producing thymosin.

(a)  

• Negative
• Positive 

Tags

NGSS.HS-LS1-3

What type of Feedback Mechanism?

The hypothalamus signals the anterior pituitary to release TSH, causing the thyroid to release thyroxine. This leads to an increase in metabolic activity. Increased thyroxine level causes the pituitary to stop releasing TSH.

• N

• P

• Both Positive and Negative Feedback

• Neither Positive nor Negative Feedback

Tags

NGSS.HS-LS1-3

What type of Feedback Mechanism?

Eating increases blood glucose levels, causing the pancreas to release insulin. Insulin triggers the storage of glucose as glycogen. Write P for Positive Feedback or N for Negative Feedback.

(a)  

• Negative
• Positive 

Tags

NGSS.HS-LS1-3

What type of Feedback Mechanism?

On a hot day, a plant closes its stomata to prevent excessive water loss through transpiration. The water is needed for photosynthesis.

(a)  

• Negatice
• Positive 

Tags

NGSS.HS-LS1-3

What type of Feedback Mechanism?

Baby suckling causes the mother’s hypothalamus to signal prolactin release from the anterior pi

tuitary. This increases milk production.

(a)  

• Positive
• Negative

Tags

NGSS.HS-LS1-3

What type of Feedback Mechanism?

When fruits are ripe, they release a gas which is known as ethylene (C2H4). This causes the nearby fruits exposed to the ethylene to begin to ripen. As the ripening continues, these fruits also continue to release ethylene gas. This feedback loop is usually used in the production of fruits, and exposure to ethylene gas makes the ripening process faster.

(a)  

• Positive
• Negative 

Tags

NGSS.HS-LS1-3

What type of Feedback Mechanism?

When an athlete begins a competition, their fight or flight response begins, and the adrenal glands release epinephrine to increase blood flow throughout the body. This allows more oxygen to be pumped to the muscles.

(a)  

• Positive 
• Negative

Tags

NGSS.HS-LS1-3

What type of Feedback Mechanism?

A gardener was outside in the heat weeding his garden, which caused his pituitary gland to release ADH, decreasing the output of water from the kidneys.

(a)  

• Negative
• Positive 

Tags

NGSS.HS-LS1-3

What type of Feedback Mechanism?

As the sun goes down, it stimulates the pituitary gland to release melatonin to help a person sleep.

(a)  

• Negative
• Positive 

Tags

NGSS.HS-LS1-3