AP2

Question 1

What is DIFFUSION?

Answer 1

The movement of particles from a high concentration to a low concentration until they are evenly spread.

Question 2

What are EXCHANGE SURFACES?

Answer 2

A surface layer or membrane that allows substances to pass from the environment into the body.

Question 3

What is OSMOSIS?

Answer 3

The movement of water from a more dilute region to a more concentrated region across a partially permeable membrane.

Question 4

What is ACTIVE TRANSPORT?

Answer 4

The movement of substances from a low concentration to a high concentration using energy.

Question 5

Where is bile made?

Answer 5

Liver and stored in the gall bladder

Question 6

What does bile do?

Answer 6

Emulsifies fats (breaks down)

Question 7

What is mechanical digestion?

Answer 7

Movement: chewing and churning

Question 8

What is chemical digestion?

Answer 8

Uses enzymes to break down nutrients

Question 9

What is the transport tissue that takes water through the plant?

Answer 9

Xylem

Question 10

What does epidermis tissue do?

Answer 10

It covers and protects the organs of the plant

Question 11

By which process does carbon dioxide enter a plant?

Answer 11

Diffusion

Question 12

What are tissues?

Answer 12

A group of similar cells working together

Question 13

What is an independent variable?

Answer 13

The variable that is being tested and changed

Question 14

What is a dependant variable?

Answer 14

the variable that changes as a result of the independent variable
The one you are interested in measuring

Question 15

What is the control variable?

Answer 15

any variable that’s held constant in a research study

Question 16

What is translocation?

Answer 16

The movement of sugars of cell sap from one phloem cell to another

Question 17

What is the function of phloem tubes?

Answer 17

Carry dissolved sugars from leaves to wherever they are needed

Question 18

What is the function of palisade mesophyll cells?

Answer 18

Absorbing sunlight for photosynthesis

Question 19

What are epidermis cells?

Answer 19

Protective layer around the leaf

Question 20

What is transpiration?

Answer 20

The route taken by water through a plant known as the transpiration stream

Question 21

How does water move out of plants?

Answer 21

Diffusion out of the stomata

Question 22

What factors speed up transpiration?

Answer 22

.Higher light intensity
.Higher temperature
.More wind

Question 23

How are root hair cells adapted?

Answer 23

They have a large surface area to increase the rate of water absorption.
Lots of mitochondria for energy for active transport.

Question 24

What substance(s) is transported in the xylem?

Answer 24

Water and mineral ions

Question 25

How does water enter a root hair cell?

Answer 25

Osmosis

Question 26

Where is meristem tissue located?

Answer 26

Roots and shoots -tip of plants

Question 27

What are meristem cells?

Answer 27

Cells that differentiate into any type of plant cell at any point in a plants life

Question 28

What are stomata?

Answer 28

They are tiny pores that allow gases to move in and out of the leaf

Question 29

What adaptations reduce transpiration?

Answer 29

Curled leaves,sunken stomata and hairs on the underside of leaves raise humidity outside the stomata

Question 30

What do spongy mesophyll cells do?

Answer 30

Enable gas exchange in the leaf