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EOC Prep April 20

Which of these best explains the difference between the way animals and plants exchange gases with their environments?

a) Animals use only photosynthesis, while plants use both photosynthesis and respiration

b) Animals use only respiration, while plants use both photosynthesis and respiration

c) Animals use both photosynthesis and respiration while plants use only respiration

d) Animals use both photosynthesis and respiration while plants use only photosynthesis

April 20Bio II

Starting with glucose draw a flow chart that shows the

three main steps in cell (aerobic) respiration.

Include what goes in and comes out of the process.

HW: complete page 2 of theEOC review

Guess the Question!

• Water has a high specific heat which means that water’s temperature will not change dramatically when it absorbs or loses heat

• Water is like a heat reservoir that can store a lot of heat energy without raising its temperature dramatically (Ocean-side communities tend to have milder climates)

• Hydrogen bonding in water helps form the tertiary structure (ball of yarn) of proteins by forcing hydrophobic regions to cluster together

• Water fills the central vacuole and keeps the cell turgid (rigid in terms of shape); think of a full water balloon versus a slightly filled water balloon

Guess the Question#10!

• Water has a high specific heat which means that water’s temperature will not change dramatically when it absorbs or loses heat (body buffer)

• Water is like a heat reservoir that can store a lot of heat energy without raising its temperature dramatically (Ocean-side communities tend to have milder climates)

• Hydrogen bonding in water helps form the tertiary structure (ball of yarn) of proteins by forcing hydrophobic regions to cluster together (maintains protein structure)

• Water fills the central vacuole and keeps the cell turgid (rigid in terms of shape); think of a full water balloon versus a slightly filled water balloon (cell turgidity)

Guess the Question!• Through the process of mitosis, an

organism increases the number of cells in its body (1� 2 � 4 � 8 �16 � ?)

• As an organism grows and develops, its cells become more specialized to perform a variety of functions– An example is that some cells

become skin cells while other cells become nerve cells

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Guess the Question#1

• Through the process of mitosis , an organism increases the number of cells in its body (1� 2 � 4 � 8 � 16 � ?)

• As an organism grows and develops, its cells become more specialized to perform a variety of functions (differentiation)– An example is that some cells become skin

cells while other cells become nerve cells

Guess the Question!• A single-celled organism (protist) divides in two

to create two new protists (both identical to the original)

• A single-celled organism (hydra) grows an identical copy of itself on its side; eventually the new copy separates from the original and becomes a new hydra

• A donor nucleus is placed inside a donor egg and the new cell grows into a new organism identical to the organism that donated the nucleus

• Two gametes (haploid cells) fuse to create a zygote

Guess the Question#11

• A single-celled organism (protist) divides in two to create two new protists (both identical to the original) (binary fission)

• A single-celled organism (hydra) grows an identical copy of itself on its side; eventually the new copy separates from the original and becomes a new hydra (budding)

• A donor nucleus is placed inside a donor egg and the new cell grows into a new organism identical to the organism that donated the nucleus (cloning)

• Two gametes (haploid cells) fuse to create a zygote (sexual reproduction)

Photosynthesis -- the process of converting carbon dioxide, water, and the energy in sunlight

into high energy sugars (glucose)

Light Energy

Chloroplast

CO2 + H2O Sugars + O 2

Section 8-2

Photosynthesis: Reactants and ProductsPhotosynthesis Overview

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ChloroplastLight

O2

Sugars

CO2

Light-Dependent Reactions

CalvinCycle

NADPH

ATP

ADP + PNADP+Chloroplast

Section 8-3

Figure 8-7 Photosynthesis: An OverviewLight-dependent reaction � uses sunlight energy to produce oxygen, ATP, and other high energy moleculesLight-independent reaction (Calvin cycle) � produces glucose

Photosynthesis

includes

of

take place intakes place in uses

to produce to produce

use

Light-dependentreactions

Calvin cycle

Thylakoidmembranes Stroma NADPHATPEnergy from

sunlight

ATP NADPH O2 Chloroplasts High-energysugars

Section 8-3

Concept Map

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Factors affecting the rate of photosynthesis

• Lack of water will reduce the rate of photosynthesis

• Temperature – enzymes only work well at specific temperature ranges (too hot or cold will slow the rate of photosynthesis)

• Intensity of light – as light increases so does the rate of photosynthesis, BUT ONLY UP TO A CERTAIN POINT!

#P-H clip and DS clip

EOC performance event practice

• Complete the “Competition Among Organisms” worksheet

• Go to my website and click on the EOC practice test link; choose bio session II

• Create your graph (from the worksheet) on the EOC website and show me when you are finished

EOC practice

• Click on the link directly below “DESE website for Biology practice test”

• Choose the “released form/key” for biology• Record your answers on a sheet of paper• Go back to the main page and choose

answer key; check your answers• If time allows, choose the performance

event and read each question