Exam 2

Question 1

What is the main purpose of the electron transport chain?

Answer 1

Create a proton gradient

Question 2

T OR F

Cellular respiration spontaneously creates energy for an organism so that it can survive?

Answer 2

FALSE

Question 3

How does carbon fixation differ between C3 and C4 plants?

Answer 3

Rubisco is the primary enzyme that catalyzes carbon fixation in C3 plants, and PEP carboxylase can catlyze carbon fixation in C4 plants

Question 4

Where do the phases of the Calvin Cycle take place

Answer 4

Stoma

Question 5

When do cells switch from cellular respiration to fermentation?

Answer 5

When Electron acceptors required by the ETC are not available

Question 6

What is the net production of ATP from only one molecule of glucose in Eukaryotes

Answer 6

29

Question 7

If you could add any of the following to a cell, which one would result in the highest increase in the synthesis of ATP in the mitochondria?

Answer 7

Increased NADH in the matrix

Question 8

What is the reason that leaves turn red, yellow, and orange during the fall?

Answer 8

When going dormant the first molecules to break down are chlorophylls

Question 9

In photorespiration, the enzyme _____ binds ____ instead of ____ and ultimately ends up using ______ instead of producing it?

Answer 9

Rubgisco, O2, Co2, ATP

Question 10

What is the first law of thermodynamics?

Answer 10

Energy is neither created nor destroyed?

Question 11

Where does the Krebs cycle occur?

Answer 11

The mitochondrial matrix

Question 12

What molecule is the final product of the Calvin Cycle and is used to create glucose?

Answer 12

G3P

Question 13

Phosphofructokinase (PFK) is an important enzyme in which process?

Answer 13

Glycolysis

Question 14

The entire process of photosynthesis is employed to turn _____ energy into ____ energy

Answer 14

Light, Chemical

Question 15

The electron transport chain is a ______ reaction

Answer 15

Oxidation

Question 16

The following molecules can be broken down for energy, list in order what molecule the body starts with, which one is 2nd and last
1- fats
2-Proteins
3 Carbohydrates

Answer 16

Charbohydrates, fats, proteins

Question 17

what is the formula for photosynthesis?

Answer 17

6 CO2 + 6 H2O + energy -> C6H12O6 + 6 O2

Question 18

If corn grain with radioactive glucose were fed to a chicken, most of the radioactivity would be transferred from molecule to molecule along which path?

Answer 18

Corn grain to pyruvate to Krebs cycle to carbon dioxide

Question 19

Two energy wavelengths are absorbed in photosynthesis, which are they?

Answer 19

P680 and P700

Question 20

T OR F
Plant cells do not contain Mitochondria, instead cellular respiration occurs within their chloroplast making it more efficient to go through photosynthesis and cellular respiration

Answer 20

FALSE

Question 21

Acetyl CoA is the enzyme that fuels which cycle?

Answer 21

Krebs Cycle

Question 22

If a plant takes in radio-labeled CO2, where will that molecule eventually end up?

Answer 22

Stored in glucose

Question 23

In the human cell, anaerobic production of ATP during periods of quick, intense exercise is possible. What molecule is the electron acceptor during this period of exercise?

Answer 23

Pyruvate

Question 24

Plants are placed along the wall of a dark room. Light is then shown thorugh a prism sparating all wavelenghts of light. All the wavelengths of light are directed at a specific plant, which plant grows the least and what is the reason for its lack of growth?

Answer 24

Plants in the green wavelenght grow the least because they cannot photosynthesize

Question 25

When electrons are excited and transferred during photosynthesis, where do the electrons come from to replace the missing electrons?

Answer 25

H2O

Question 26

PDBIO TEACHER

Answer 26

Dr. Geary

Question 27

What does it mean to say that CO2 becomes fixed?

Answer 27

It becomes bonded to an organic compound

Question 28

What is the function of flavonoids

Answer 28

Protection from hight-energy radioation

Question 29

During photosynthesis, the energy required to produce sugar come from

Answer 29

Light-Capturing reactions

Question 30

A CAM PLANT___________

Answer 30

Takes in CO2 at night and the molecules are temporarily fixed to organic acids and stored in teh central vacuoles of photosynthesizing cells. During the day, the molecules are processed in a reaction that release the CO2 and feed the Calvin Cycle

Question 31

The stomata is the site in which what occurs?

Answer 31

Gas exchange

Question 32

The light reaction takes place in the ____

Answer 32

Thylakoid

Question 33

The proper order of the light reactions is

Answer 33

Photosystem 2, photosystem 1

Question 34

Data suggest that rubisco makes up 10% of the total protein found in spinach leaves. Research elucidating the ctructure of rubisco shows that it has four active sites. Why, with four active sites, might there be a such a large concentration of rubisco in plant matter?

Answer 34

Rubisco is a very slow enzyme: what it lacks in speed, it makes up in numbers

Question 35

Be able to draw the light reactons

Answer 35

Look at test