Control Systems in Organisms

Evelyn is studying how different factors affect the stability of organisms. Which of the following are external and internal factors that challenge the stability of an organism?

• Temperature and pH levels

• Diet and exercise

• Genetic mutations and infections

• All of the above

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS3-1

During a biology class, Henry asked about homeostasis. Define homeostasis as mentioned in the passage.

• The process by which organisms maintain a stable internal environment.

• The ability of an organism to move independently.

• The process of converting food into energy.

• The adaptation of organisms to their environment.

Avery is learning about homeostasis in biology class. She discovers that it is the regulation and maintenance of the internal environment within the _______ ranges that are necessary to support life at the cellular level.

• narrow

• wide

• random

• variable

During a winter camping trip, Michael notices that he starts shivering. Use the Homeostatic Control Systems Diagram to explain how shivering can help his body temperature return to normal.

• Shivering generates heat through muscle activity.

• Shivering decreases blood flow to the skin.

• Shivering increases sweating to cool the body.

• Shivering reduces metabolic rate.

David is learning about homeostasis in his biology class. He wants to know: Homeostasis depends on communication between which of the following components?

• Receptors, the control center, and the effectors

• Receptors, the control center, and the sensors

• Sensors, the control center, and the effectors

• Receptors, the sensors, and the effectors

During a science class, Anika learned that the role of the nervous system in sending messages in the human body is to:

• Transport oxygen to cells

• Send electrical signals between different parts of the body

• Digest food and absorb nutrients

• Produce hormones for growth

Evelyn is studying how the endocrine system communicates differently from the nervous system. She learns that the endocrine system differs by:

• Using chemical signals called hormones

• Using electrical impulses

• Communicating through direct contact

• Having faster response times

Avery is studying how receptors, control centers, and effectors interact to maintain homeostasis in an organism by:

• Detecting changes, processing information, and initiating responses

• Producing hormones, transporting nutrients, and generating energy

• Breaking down food, absorbing nutrients, and eliminating waste

• Providing structure, protecting organs, and enabling movement

Kai is learning to balance a book on his head, which involves (a)   to maintain balance.

• The feedback loop involves adjustin

• The feedback loop is about ignoring

• The feedback loop requires closing

• The feedback loop is about moving q

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NGSS.MS-PS2-4

While Arjun was walking to the library with a book in his hand, what type of receptors provided him information about the position of the book?

• Photoreceptors

• Mechanoreceptors

• Chemoreceptors

• Thermoreceptors

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NGSS.MS-LS1-8