Chapter 2 Plants

Question 1

Global energy use is ?

It has done what since 1965 and how fast

Answer 1

Increasing
Tripled
50% faster than pop.

Question 2

Where does most of energy we use come from

Fossil fuels are what two things?

Answer 2

Burning fossil fuels
Oil natural gas and coal
Non renewable and finite

Question 3

Where do energy source of fossil fuel come from

Answer 3

Decay of plants and algae living in swamps and shallow seas millions of years ago

Question 4

What is another problem with fossil fuels

Answer 4

Rise of carbon dioxide and global warming

Question 5

What power life on earth?

Answer 5

Sunlight and infinite

Question 6

Average cell is what size

Answer 6

1/40th of a millimeter

Question 7

What is each cell surrounded with ?

Answer 7

Lipid membrane called cell membrane that controls what goes in and out

Question 8

Where do most of cells activities take place

Answer 8

Cytoplasm

Question 9

Two structures not found in animal cells

Answer 9

Cell wall outside of cell membrane

Chloroplasts in cytoplasm

Question 10

Chloroplasts are green because of

Answer 10

Pigment chlorophyll

Question 11

Not all plant cells contain chloroplasts true or false

Answer 11

True

Root and inside stem

Question 12

Respiration formula

Answer 12

Sugars + O2—> H2O +energy

Question 13

What is a consequence of photosynthesis

Answer 13

Water loss to atmosphere because carbon dioxide enters by dissolving in liquid on cells surface
Evaporates

Question 14

Xylem and phloem functions

Answer 14

Roots to leaves

Sugars from leaves to all parts that aren’t photosynthetic

Question 15

Transpiration definition

Answer 15

Movement of water from roots to leaves then or to atmosphere

Question 16

What happens because of transpiration when soil is dry

Answer 16

Wilt and death

Question 17

How does plant restrict water loss

Answer 17

Waxy layer and allowing CO2 uptake and water release only through stomates

Question 18

What are stomates surrounded by and how do they help

Answer 18

Guard cells that swell and shrink to open pore

Question 19

What happens when stomates shrink

Answer 19

The soil is dry and stop uptake of CO2 so photosynthesis stops

Question 20

What does cell wall provide

Answer 20

Cell shape rigidity and attachment to neighboring cells

Question 21

What is cell wall main component and what is it made up of

Answer 21

Cellulose chains of sugars

Most abundant organic compound on earth

Question 22

The way in which glucose is joined in cellulose does what to it

Answer 22

Forms stiff rods that are resistant to being broken down
(Similar to steel)
RESISTANT TO DEGRGATION

Question 23

What is wood

Answer 23

Plant cell walls 60% cellulose in weight

Question 24

Chemical reaction of photosynthesis , what does this reaction make possible by doing what with carbon and sunlight

Answer 24

CO2 and water converted into sugars and oxygen by light

Makes life possible

Carbon into a form that can be used to make molecules of body

Converting sunlight into energy form organisms can use

Question 25

Difference between hypothesis and theory

Answer 25

Theory: broad explanation of of some natural phenomenon that has been repeatedly tested and shown to hold true

Hypothesis: proposed explanation for some narrow observation about the natural world

HYPOTHESIS NARROWER IN SCOPE AND LESS EVIDENCE SUPPORTING THEM