Chapter 8.4 Homeostasis

What is homeostasis?

• The process of cell division

• The ability to maintain a relatively constant internal environment

• The movement of molecules across cell membranes

• The breakdown of glucose for energy

Tags

NGSS.HS-LS1-3

Which of the following is NOT an example of a unicellular organism?

• Bacteria

• Amoeba

• Algae

• Human

Tags

NGSS.MS-LS1-1

Endotherms are organisms that:

• Rely on external sources for body heat

• Cannot regulate their body temperature

• Maintain a constant internal body temperature

• Change color to absorb more sunlight

Which of the following is an example of an ectotherm?

• Dog

• Human

• Snake

• Eagle

What is cell specialization?

• The process of cells becoming larger

• Different types of cells performing different roles

• Cells competing for resources

• The division of cells into smaller units

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-4

Which specialized cell is responsible for carrying oxygen in the blood?

• White blood cell

• Nerve cell

• Muscle cell

• Red blood cell

In plants, which cells are specialized for photosynthesis?

• Root cells

• Stem cells

• Leaf cells

• Flower cells

Tags

NGSS.MS-LS1-6

What is a tissue?

• A single cell performing a specific function

• A group of organs working together

• A group of similar cells that perform a particular function

• The smallest unit of life

Tags

NGSS.MS-LS1-1

How do cells in large organisms typically communicate?

• Through electrical signals only

• Using chemical signals

• By direct physical contact

• Through sound waves

Tags

NGSS.MS-LS1-3

What is a receptor in cellular communication?

• A structure that produces chemical signals

• A molecule that binds to a signaling molecule

• The gap between two neurons

• A type of specialized cell