Biology Unit 2 Review

What is the Circulatory System's main function?

• Produces Oxygen

• Communicate with cells

• Transportation of Nutrients and Oxygen

• Converting energy out of food

The __________________ is the body's command center, and consists of the brain, spinal cord, and nerves that bring information to and from the brain.

• endocrine system

• nervous system

• respiratory system

• excretory system

What does homeostasis maintain in the body?

• A changing internal environment
• A constant or stable internal environment
• A changing external environment
• A constant or stable external environment

Tags

NGSS.HS-LS1-3

When exercising, your heart rate increases because your body...

• Needs more Oxygen
• Needs more Carbon Dioxide
• Needs to create waste
• Needs to fight disease

Tags

NGSS.HS-LS1-7

Which best compares the respiratory system to the circulatory system?

• The respiratory system transports oxygen to cells, while the circulatory system provides oxygen for cells.
• The respiratory system provides oxygen for cells, while the circulatory system transports oxygen to cells.
• The respiratory system breaks down food for cell energy, while the circulatory system rids the body of waste.
• The respiratory system rids the body of waste, while the circulatory system breaks down food for cell energy.

Tags

NGSS.HS-LS2-3

Molecules using proteins to movie against the concentration gradient (from low to high) is called

• Facilitated Diffusion

• Simple Diffusion

• Active Transport

• Osmosis

If the environment gets cold, we will often shiver in order to increase body temperature. This is an example of

• regulating blood pressure

• positive feedback

• negative feedback

Tags

NGSS.HS-LS1-3

How does the cell membrane help maintain homeostasis?

• Regulates what enters and leaves the cell

• Flexibility

• Protective barrier

• Structure and support

Tags

NGSS.HS-LS1-3

Movement across the cell membrane without the use of energy is called

• Active transport
• Passive transport
• Mitosis
• Homeostasis

Which of the following statements about hormones and the endocrine system is true?

• Hormones are produced by specialized blood cells and secreted into the blood.

• Hormones are stored in the mitochondria of hormone-secreting cells.

• Hormones only affect specific cells having the appropriate receptors.

• Hormones result in short-term responses as compared with nervous responses.