exam 2 2017

Question 1

reactions that require or consume free energy are called

Answer 1

endergonic reactions

Question 2

T or F the G of a reaction depends on whether an enzyme is present or not

Answer 2

false

Question 3

T or F enzymes lower the actication energy of the chemical reactions they catalyze

Answer 3

True

Question 4

an inhibitor binds noncovelently to the active site of an enzyme what kind of inhibitor is it

Answer 4

Competitive

Question 5

in a chemical reaction the rate
A. the rate depends on the value of G
B. the rate depends on the activation energy
C. the entropy change depends on the activation energy
D. the activation energy depends on the value of G
E. the change in free enery depends on the activation energy

Answer 5

B. the rate depends on the activation energy

Question 6

H= G+TS. T is temp what is H, G, and S

Answer 6

H is enthalpy G is free energy and S is entropy

Question 7

according to the second law of thermodynamics what happens when energy is converted from one form to another

Answer 7

the amount of usable energy decreases

Question 8

some enzyme will not function properly without the binding of inorganic ions these ions are called

Answer 8

cofactors

Question 9

where doest the citric acid cycle occur in eukaryotes

Answer 9

matrix of the mitochondria

Question 10

what kind of cells are capable of glycolysis

Answer 10

all kinds/ universal

Question 11

what kind of organisms can do photosynthesis

Answer 11

plants and some bacteria and some Protista

Question 12

photosynthesis in green plants occurs during the day respiration inplants occurs

Answer 12

all the time

Question 13

which of the following processes produce NADH

A. glycolysis 
B. Citric acid cycle 
C. pyruvate oxidation 
D a and B 
E. A B and C

Answer 13

E all of the above

Question 14

triose phosphate (G3P) dehydrogenase catalyzes the conversion of gyceraldehyde 3-phosphate to ?

Answer 14

1, 3 biphosphoglycerate

Question 15

during glycolysis what is the substrate for pyruvate kinase

Answer 15

phosphoenolpyruvate

Question 16

which enzymes is most responsible for regulating the rate of glycolysis

Answer 16

phosphofructokinase

Question 17

what is the product of the reaction catalyzed by rubisco during photosynthesis

Answer 17

3-phosophoglycerate

Question 18

which of the following is a substrate for rubisco

A. oxygen
B. CO2
C. Glyceraldehyde 3- phosphate
D. RUMP
E both a and B

Answer 18

E both A and B

Question 19

in which plants does lost of photorespiration occur when its hot and Dry

Answer 19

C3 plants

Question 20

which of the following statements about CAM plants is false?

a. they use rubisco to fix carbon dioxide during the day
b. they use PEP carboxylase to fix carbon dioxide at night
c. Cactus are CAM plants
d. CAM plants don’t use the Calvin Cycle
e. CAM plants have both photosystem I and photosystem II

Answer 20

D CaM plants don use the calvin cycle

Question 21

where does the calvin cycle take place in eukaryotes

Answer 21

in the stroma

Question 22

some animals use their mitochondria to make the heat instead of ATP how do they do this ?

Answer 22

they have a special protein in the membrane that allows protons to diffuse across the membrane

Question 23

what happens when a molecule (clorophyll for example) absorbs light

Answer 23

an electron is boosted to a higher energy level

Question 24

the calvin cycle produces a 3 carbon molecule that leaves the cycle and maybe used to make glucose what is this molecule called

Answer 24

glyceraldehyde 3-phosphate

Question 25

when pyruvate is converted to lactate what other products are formed>

Answer 25

NAD+

Question 26

ATP synthase is locates where in eukaryotic cells ?

Answer 26

inner membrane o the mitochondria and thylakoid membrane

Question 27

fermentation in eukaryotic cells occurs in the

Answer 27

cytoplasm

Question 28

ATP synthase catalyzes a chemical reaction tht required energy what is the immediate source of energy used by ATP synthase?

Answer 28

proton gradient

Question 29

in the mitochondrial electron transport chain what donates electrons to oxygen directly ?

Answer 29

Cytochrome C oxidase

Question 30

oxaloacetate accepts an acetyl group from acetyl_CoA what molecule will be produced?

Answer 30

citrate

Question 31

which of the following are products of pyruvate oxidation a. carbon dioxide b. NADH c. acetyl CoA d. a and c e. a,b, and c

Answer 31

e. a,b, and c

Question 32

which of the following prpcesses use oxygen a. citric acid cycle b. glycolysis c. electron transport chain d. a and c e. a,b, and c

Answer 32

c. electron transport chain

Question 33

how many atp molecules can be made per molecule of glucose by glycolysis and cellular respiration

Answer 33

~32

Question 34

in human cells the fermentation process produces

Answer 34

Lactic acid

Question 35

before fats can be used as an energy source they must be hydrolyzed to

Answer 35

glycerol and fatty acids

Question 36

what organism did Leland hartwell use to study regulation of the eukaryotic cell cycle

Answer 36

yeast

Question 37

NADPH is a

Answer 37

coenzyme

Question 38

where does a substrate bind to an enzyme?

Answer 38

active site

Question 39

what enzyme is the main regulator of the citric acid cycle

Answer 39

isocitrate dehydrogenase

Question 40

what part of the electron transport chain accepts electrons from both succinate dehydrogenase and nadh-q reductase

Answer 40

ubiquinone

Question 41

write the balanced chemical equation that summarizes photosynthesis

Answer 41

6CO2 + 12H2O --> C6H12O6 + 6O2 + 6H2O

Question 42

WRITE THE BALANCED CHEMICAL EQUATION THAT SUMMARZES CELLULAR RESPIRATION

Answer 42

C6H12O6 + 6O2 -> 6CO2 + 6H2O

Question 43

NAME THE ENZYME FOR THIS REACTION GLUCOSE--> GLUCOSE 6-PHOSPHATE

Answer 43

HEXOKINASE

Question 44

REACTIONS THAT REQUIRE OR CONSUME FREE ENERGY ARE CALLED

Answer 44

ENDERGONIC

Question 45

THE DELTA G OF A REACTION DEPENDS ON WHETHER AN ENZYME IS PRESENT OR NOT? t OR F

Answer 45

F

Question 46

AOME ENZYMES WILL NOT FUNCTION PROPERLY WITH OUT THE BINDING OF INORGANIC IONS THESE IONS ARE CALLED?

Answer 46

COFACTORS

Question 47

IN THE MITOCONDRIAL ELECTRON TRANSPORT CHAIN WHAT DONATES ELECTRONS TO OXYGEN DIRECTLY>

Answer 47

CYTOCHROME C OXIDASE

Question 48

WHICH OF THE FOLLOWING ARE PRODUCTS OF PYRUVATE OXIDATION a CARBON DIOXIDE B. NADH C. ACETYL CoA

Answer 48

A B AND C

Question 49

HOW MANY ATP MOLECULES CAN BE MADE PER MOLECULE OF GLUCOSE BY GLYCOLYSIS AND CELLULAR RESPIRATION ?

Answer 49

~32

Question 50

IN HUMAN MUSCLE CELLS THE FERMENTATION PROCESS PRODUCES

Answer 50

LACTIC ACID

Question 51

WHICH OF THE FOLLOWING ARE PRODUCED BY THE CYCLIC ELECTRON TRANSPORT IN CHLOROPLAST ``` A. ATP B. CARBON DIOXIDE C OXYGEN D NDPH C ATP OXYGEN AND NADPH ```

Answer 51

A ATP

Question 52

WHICH OF THE FOLLOWING ARE PRODUCED BY NON CYCLIC ELECTRON TRANS PORT IN THE CHLOROPLAST ``` A. ATP B. CARBON DIOXIDE C OXYGEN D NDPH C ATP OXYGEN AND NADPH ```

Answer 52

ATP OXYGEN AND NADPH

Question 53

THE OXYGEN THAT IS PRODUCED DURNING PHOTOSYNTHESIS IS

Answer 53

MADE BY PHOTOSYSTEM II

Question 54

WHERE DOES THE CALVIN CYCLE TAKE PLACE IN EUKARYOTES

Answer 54

IN THE STROMA

Question 55

SOME ANIMALS USE THEIR MITOCHONDRIA TO MAKE HEAT INSTEAD OF ATP HOW DO THEYDO THIS ?

Answer 55

THEY HAVE A SPECIAL PROTEIN IN THE MEMBRANE THAT ALLOWS PROTONS TO DIFFUSE ACROSS THE MEMBRANE

Question 56

THE CALVIN CYCLE PRODUCES A 3 CARBON MOLECULE THAT LEAVES THE CYCLE AND MAY BE USED TO MAKE GLUCOSE WHAT IS THIS MOLECULE

Answer 56

GLYCERALDEHYDE 3 PHOSPHATE

Question 57

WHEN PYRUVATE IS CONVERTED TO LACTATE WHAT OTHER PROUCTS ARE FORMED

Answer 57

NAD+

Question 58

FERMINTATION IN EUKAYOTIC CELLS OCCURS IN THE

Answer 58

CYTOPLASM

Question 59

WHICH OF THE following processes produce O2? a calvin cycle b noncyclic electron transport c cyclic electron transport

Answer 59

B non cyclic electron transport

Question 60

t or f ATP and NADPH are produced in the light reaction

Answer 60

true

Question 61

electrons are transferred from photosystem I to photosystem II during the lught reaction

Answer 61

false

Question 62

which of the following processes make NADPH A glycolysis B citric acid cycle c electron transport chain

Answer 62

glycolysis and citric acid cycle

Question 63

what enzyme catalyzes the conversion of glucose to glucose 6-phospate

Answer 63

hexokinase

Question 64

what enzyme catalyzes the conversion of fructose-1,6bisphosphate to dihydroxyacetone phosphate and glyceraldehyde3-phosphate

Answer 64

aldolase

Question 65

triose phosphate dehydrogenase catalyses the conversion of glyceraldehyde 3-phosphate

Answer 65

1,3bisphospglycerate

Question 66

GLYCOLYSIS IS AN AEROBIC REACTION

Answer 66

FALSE

Question 67

WHAT IS THE PRODUCT CATALYZED BY RUBISCO

Answer 67

3-PHOSPHOGLYCERATE

Question 68

IN NONCYCLIC PHOTOSYNTHETIC ELECTON TRANSPORT WATER IS USED TO ?

Answer 68

REDUCE CHLOROPHYLL

Question 69

WHAT OCCURS IN THE THYLACOID MEMBRANE

Answer 69

LIGHT REACTION AND PHOTOSYNTHESIS