Homeostasis/biological organisation

When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.

Cuando te cortan, las células de la piel liberan hormonas que indican a las plaquetas que vengan y detengan el sangrado. Las plaquetas luego liberan más hormonas que indican aún más plaquetas para ayudar a detener el sangrado. Las señales hormonales continúan hasta que se cierra el corte.

• Positive Feedback Response

• Negative Feedback Loop 

Tags

NGSS.HS-LS1-3

When you are cold, you shiver and your blood vessels contract, which warms you up. When you are hot, you sweat and your blood vessels expand, which cools you down.  

Cuando tienes frío, tiemblas y tus vasos sanguíneos se contraen, lo que te calienta. Cuando tienes calor, sudas y tus vasos sanguíneos se expanden, lo que te enfría.  

• Positive Feedback Response

• Negative Feedback Loop 

Which diagram represents an organ?

• #1
• #2
• #3
• #4

Which of the following are in the correct order?

• organ system, cell, organ, tissue, organism

• cell, organ, tissue, organ system, organism

• cell, tissue, organelle, organ system, organism

• cell, tissue, organ, organ system, organism

Homeostasis mechanisms...

• keep everything exactly the same.

• usually operate by positive feedback systems.

• act to keep the internal environmental conditions outside the normal range

• is the ability to maintain a relatively stable internal environment

Tags

NGSS.HS-LS1-3

This feedback system amplifies a change until a desired outcome is reached.

Este sistema de retroalimentación amplifica un cambio hasta que se alcanza el resultado deseado.

• positive feedback system

• negative feedback system

• neutral feedback system

• self-monitoring feedback system

The feedback system that returns the body back to the normal set point.

El sistema de retroalimentación que devuelve el cuerpo al punto de ajuste normal.

• positive

• negative

• neutral

• returnable

Which of the following examples is correctly matched with its level of organization?

• A monarch butterfly is an organ system.

• The brain is a type of tissue.

• A mitochondrion is an organelle.

• A liver is a type of cell.

Tags

NGSS.MS-LS1-3

Abiotic

• Living

• Nonliving

• Dead

• Antibiotic

Tags

NGSS.MS-LS2-3

Living

• Abiotic

• Atypical

• Biological

• Biotic