Homeostasis

Which structure, composed mainly of proteins and lipids, aids in maintaining homeostasis in a cell?

• chromosome

• centrosome

• cell membrane

• nucleolus

Tags

NGSS.HS-LS1-3

Here is a picture of an animal cell. What organelle is the arrow pointing to?

• Cell Wall

• Mitochondrion

• Nucleus

• Cell Membrane

Tags

NGSS.MS-LS1-2

What is a disease where sufferers cannot control their blood glucose levels?

• Diabetes
• Influenza
• Cholera
• Cystic fibrosis

Tags

NGSS.HS-LS1-3

Which is NOT a characteristic/example of positive feedback?

• Enhances the stimuli

• Body temperature, Blood pressure

• Labor contractions

Tags

NGSS.HS-LS1-3

Homeostasis

• allows for a wildly fluctuating internal environment

• is impossible in vertebrates

• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation

Tags

NGSS.HS-LS1-3

What is another word that can be used to describe "homeostasis"?

• STABLE
• EQUAL
• COMPLETE
• CORRECT

Tags

CCSS.RI.8.4

CCSS.RI.9-10.4

CCSS.RL.11-12.4

CCSS.RL.8.4

CCSS.RL.9-10.4

Most bacteria that cause sickness in humans grow best at 98.6^oF. Sometimes a fever is the body's response to the bacteria. What is the reason for developing a fever?

• To lower the temperature of the body to kill the bacteria
• The increase the temperature of the body to kill the bacteria
• To allow the bacteria to take over
• To make you feel miserable

Tags

NGSS.HS-LS1-3

What is an example of a positive feedback mechanism?

• 
• 

Tags

NGSS.HS-LS1-3

The two types of feedback systems that help organisms maintain homeostasis are:

• positive and negative 
• receptor and effector
• static and dynamic
• minor and major

Tags

NGSS.HS-LS1-3

Why does pulse rate increase during exercise?

• Oxygen and carbon dioxide must be removed from the body ASAP

• Gas exchange adjusts to happen more quickly than when a person is at rest

• Oxygen must be moved to the lungs and carbon dioxide must be moved to cells more quickly

• Carbon dioxide must be moved to the kidneys to be excreted

Tags

NGSS.HS-LS1-3