LSS Transport Systems in Living Things

Why do multicellular organisms need a transport system?

• To increase efficiency of moving substances

• As cells can be far away from the nutrients

• Cells may die without receiving nutrients in time

Tags

NGSS.MS-LS1-7

What is the function of arteries?

• transport blood away from heart

• transport blood to the heart

• transport oxygenated blood

• transport deoxygenated blood

What is the function of veins?

• transport blood away from heart

• transport blood to the heart

• transport oxygenated blood

• transport deoxygenated blood

Capillaries in the human body have a (a)   wall to allow ​ (b)   exchange of substances between blood and cells.

• thin
• faster
• thick
• slower

Match the following

• transport blood to the heart

• capillaries

• allows exchange of substances between blood and body cells

• arteries

• transport blood away from heart

• veins

Diffusion is the net​ (a)   of ​ (b)   ​ from a region of ​ (c)   concentration to a region of ​ (d)   concentration.

• movement
• particles
• higher
• lower
• water

What is the function of blood capillaries?

• transport blood to the heart

• transport blood away from the heart

• allow nutrients to diffuse from blood to body cells

• allow waste to diffuse from body cells to blood

Tags

NGSS.MS-LS1-3

The phloem transports ​ (a)   from the (b)   to other parts of the plant.

• manufactured food
• leaves
• roots
• stem
• flowers
• water and minerals

Tags

NGSS.MS-LS2-3

Mineral salts enters a plant through the

• stomata

• leaf

• root hair cell

• stem

Tags

NGSS.MS-LS2-1

More sugar diffuses out than into the bag. What is the concentration of sugar in solution X at the start?

• 10%

• 20%

• 30%

• 40%

Answer explanation

Sugar must diffuse from a higher concentration (in the bag) to a lower concentration (solution X)

Tags

NGSS.MS-PS1-2