Transport In Humans/Plants

Question 1

What is diffusion?

Answer 1

The spreading out of particles from an area of higher concentration to an area of lower concentration

Question 2

What is osmosis?

Answer 2

The movement of water molecules across a partially permeable membrane from a region of higher water concentration to an area of lower water concentration

Question 3

What is active transport?

Answer 3

When a substance is absorbed against the concentration gradient
Requires ATP to work

Question 4

Does diffusion happen faster or slower in an organism with a high SA:V ratio?

Answer 4

Faster

Question 5

Humans do not have a double circulatory system

True or false?

Answer 5

False

Humans have a double circulatory system. It is two systems joined together

Question 6

What path does blood take through the system, starting at the Vena Cava

Answer 6

Vena Cava, right atrium, right ventricle, pulmonary artery, lungs, pulmonary vein, left atrium, left ventricle, aorta, body, Vena cava

Question 7

Which side of the heart has deoxygenated blood?

Answer 7

Right

Question 8

What are the three kinds of blood vessels?

Answer 8

Arteries
Capillaries
Veins

Question 9

Where does each blood vessel carry blood?

Answer 9

Artery - AWAY from heart
Capillary - EXCHANGES materials (lungs)
Vein - TO the heart

Question 10

Which blood vessel has the smallest lumen?

Relative to its size

Answer 10

Artery

Strong and thick walls

Question 11

What 4 components are blood made of?

Answer 11

Red blood cells
White blood cells
Platelets
Plasma

Question 12

Which component of the blood defends against infection?

Answer 12

White blood cells

Question 13

How are red blood cells adapted to their function?

Answer 13

Biconcave and have a large SA

Allows more oxygen to diffuse easily

Question 14

What is the xylem made of?

Answer 14

Dead cells joined end to end with no end walls

Question 15

What does the xylem carry?

Answer 15

Water and mineral ions from the roots to the stem and leaves

Question 16

What is the phloem made of and what does it carry?

Answer 16

Made of living cells with small pores in end walls

Carries food substances from the leaves to the rest of the plant

Question 17

What is transpiration?

What is transpiration rate affected by?

Answer 17

The loss of water from plants
Affected by:
Light intensity
Temperature
Air flow
Humidity