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Mixed Subjects 3 Flashcards

1
Q

In 1986, the nuclear reactor in Chernobyl had an accident and spewed radioactive nuclei that were carried by the winds for hundreds of miles. Today, among the child survivors of the event, the most common damage is thyroid cancer. Which radioactive nucleus do you expect to be responsible for these cancers?
I-125
I-129
I-123
I-131

A

I-131

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2
Q

Perchloroethylene, which is a liquid at room temperature, is one of the most widely used solvents for commercial dry cleaning. It is sold for this purpose under several trade names, including Perclene. Does this molecule have polar bonds? Is it a polar molecule? Does it have a dipole?
no, non-polar, yes
yes, non-polar, yes
yes, non-polar, none
no, non-polar, none

A

yes, non-polar, none

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3
Q

You place manganese, calcium chloride and sodium acetate in a liquid, in which they are not soluble. The liquid has a density of 2.15 g/ml. Which will sink to the bottom, which will stay on the top, and which will stay in the middle of the liquid?
calcium chloride, manganese, sodium acetate
manganese, sodium acetate, calcium chloride
calcium chloride, sodium acetate, manganese
manganese, calcium chloride, sodium acetate

A

manganese, calcium chloride, sodium acetate

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4
Q

In photosynthesis, how many grams of CO2 are required to produce 5.1 g of glucose?
8.8 kg
7.5 kg
6.3 kg
9.6 kg

A

7.5 kg

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5
Q

Classify these as kinetic or potential energy (1) Water held by a dam (2) A speeding train (3) A book on its edge before falling (4) A falling book (5) Electric current in a light bulb
kinetic, kinetic, potential, kinetic, kinetic
kinetic, kinetic, potential, kinetic, potential
potential, kinetic, potential, kinetic, potential
potential, kinetic, potential, kinetic, kinetic

A

potential, kinetic, potential, kinetic, kinetic

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6
Q

Who invented the Carbon-14 dating method?
Otto Hahn
Williard Libby
Irving Langmuir
August Hofmann

A

Williard Libby

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7
Q

Suppose that the yield of aspirin by the reaction is 75%. How many grams of salicylic acid would be required to give an actual yield of 25.0 g of aspirin?
43 g
12 g
26 g
35 g

A

26 g

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8
Q

Polymer used in bullet proof vest
linear polyethylene
polyacrylonitrile
polycarbonate
polymethyl acrylate

A

linear polyethylene

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9
Q

Process of breaking down a large isotope into smaller isotopes.
nuclear fission
beta particle emission
nuclear fusion
gamma ray emission

A

nuclear fission

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10
Q

How does alpha, beta and gamma particle affect the mass number of an atom?
4, 1, 0
4,-1, 0
2,-1, 0
4, 0, 0

A

4, 0, 0

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11
Q

What was Melvin Calvin was known for his study of?
x-rays
photosynthesis
magnetics
boiling point

A

photosynthesis

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12
Q

Iodine vapor forms iodine crystals when it touches a cold surface. What is the reverse of the process being described?
deposition
condensation
fusion
sublimation

A

sublimation

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13
Q

Balancing C2H5SH + O2 → CO2 + H20 + SO
1, 8, 4, 5, 1
2, 9, 4, 6, 2
2, 7, 4, 4, 2
1, 5, 4, 3, 1

A

2, 9, 4, 6, 2

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14
Q

Which of the following has a larger ionic nucleus? Na+ or Na?
Both
Na
Na+
Either Na or Na+

A

Na

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15
Q

The purpose of control rods in a fission reactor is to:
cool down the reactor fuel.
prevent oxygen from reaching the fuel.
absorb neutrons generated in the fission process.
absorb electrons emitted in the fission process.

A

absorb neutrons generated in the fission process.

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16
Q

Which bond is the least polar? C-C, C-N, C-Cl, C-F, C-O?
C-C < C-Cl < C-N < C-O < C-F
C-Cl < C-N < C-C < C-F < C-O
C-F < C-N < C-C < C-Cl < C-O
C-O < C-N < C-F < C-C < C-Cl

A

C-C < C-Cl < C-N < C-O < C-F

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17
Q

You are presented with a Lewis dot structure of element X as X:. To which two groups in the Periodic Table might this element belong?
Group 2 A
Group 7 A
Group 1 A
Group 4 A

A

Group 2 A

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18
Q

A radioactive isotope with an intensity (activity) of 100 mCi per vial is delivered to a hospital. The vial contains 10 mL of liquid. The instruction is to administer 2.5 mCi intravenously. How many milliliters of the liquid should be administered?
0.66 ml
0.18 ml
0.40 ml
0.25 ml

A

0.25 ml

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19
Q

Assume the density of the compacted waste to be 490 kg · m−3. What is the ratio of HPO42- /H2PO4- in a phosphate buffer of pH 7.9 (the pH of human pancreatic fluid)?
5:1
2:1
3:1
4:1

A

5:1

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20
Q

The solubility of aspartic acid in water is 0.500 g in 100 mL at 25°C. If we dissolve 0.251 g of aspartic acid in 50.0 mL of water at 50°C and let the solution cool to 25°C without stirring, shaking, or otherwise disturbing the solution, would the resulting solution be a saturated, unsaturated, or supersaturated solution?
saturated
unsaturated
supersaturated
cannot be determined

A

supersaturated

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21
Q

Microwaves are a form of electromagnetic radiation that is used for the rapid heating of foods. What is the frequency of a microwave with a wavelength of 5.8 cm?
3.6E9 /s
9.4E9 /s
5.2E9 /s
1.7E9 /s

A

5.2E9 /s

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22
Q

A teardrop with a volume of 0.5 mL contains 5.0 mg salt. What is the molarity of the salt in the teardrop?
0.4 M
0.3 M
0.1 M
0.2 M

A

0.2 M

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23
Q

The normal boiling point of a substance depends on both the mass of the molecule and the attractive forces between molecules. Arrange the compounds in each set in order of increasing boiling point: (1) HCl, (2) HBr and (3) HI.

HI < HBr < HCl
HCl < HI < HBr
HCl < HBr < HI
HI < HCl < HBr

A

HCl < HI < HBr

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24
Q

Which isotope of boron is the most stable: boron-8, boron-10, or boron-12?
boron-8
boron-10
boron-12
boron-8 and boron-10

A

boron-10

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25
Q

Write an equation for the reaction of HCl with each compound. Which are acid–base reactions? Which are redox reactions? (1) Na2CO3 (2) Mg (3) NaOH (4) NH3 (5) Fe2O3 (6) CH3NH2 (7) NaHCO3.
(1), (2) and (7)
only (2)
only (6)
(2) and (6)

A

only (2)

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26
Q

A solution of calcium chloride is prepared in a 1.00-L volumetric flask. A 60.00-g sample of CaCl2 is added to a small amount of water in the flask, and then additional water is added to bring the total volume of solution to 1.00 L. What is the concentration of calcium chloride in units of molarity?
0.29 M
0.38 M
0.54 M
0.61 M

A

0.54 M

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27
Q

Classify the following systems as homogeneous, heterogeneous, or colloidal mixtures. (1) Physiological saline solution (2) Orange juice (3) A cloud (4) Wet sand (5) Suds (6) Milk
homogeneous, homogeneous, homogeneous, heterogeneous, colloidal, homogeneous
homogeneous, heterogeneous, colloidal, heterogeneous, heterogeneous, colloidal
Classify the following systems as homogeneous, heterogeneous, or colloidal mixtures. (1) Physiological saline solution (2) Orange juice (3) A cloud (4) Wet sand (5) Suds (6) Milk

homogeneous, homogeneous, homogeneous, heterogeneous, colloidal, homogeneous
homogeneous, heterogeneous, colloidal, heterogeneous, heterogeneous, colloidal
homogeneous, heterogeneous, colloidal, heterogeneous, colloidal, colloidal
homogeneous, homogeneous, homogeneous, heterogeneous, colloidal, colloidal

A

homogeneous, heterogeneous, colloidal, heterogeneous, colloidal, colloidal

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28
Q

Balance the chemical equation given K4Fe(CN)6 + H2SO4 + H2O = K2SO4 + FeSO4 + (NH4)2SO4 + CO
1,6,6,2,1,3,6
2,6,6,2,1,3,6
6,3,1,2,6,6,1
1,6,6,2,1,2,6

A

1,6,6,2,1,3,6

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29
Q

Suppose you have an aqueous solution prepared by dissolving 0.050 mol of NaH2PO4 in 1 L of water. This solution is not a buffer, but suppose you want to make it into one. How many moles of solid NaH2PO4 must you add to this aqueous solution to make it into a buffer of pH 7.21.
0.05 mol
0.5 mol
0.005 mol
0.0005 mol

A

0.05 mol

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30
Q

For each of the following, identify the radiation emitted. (1) Beryllium-10 changes to boron-10 (2) Europium-151m changes to europium-151 (3) Thallium-195 changes to mercury-195 (4) Plutonium-239 changes to uranium-235.
alpha, gamma, positron, beta
alpha, gamma, beta, positron
beta, gamma, alpha, positron
beta, gamma, positron, alpha

A

beta, gamma, positron, alpha

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31
Q

A 5.00 mL aliquot of bleach (density = 1.61 g/mL) was diluted and treated with excess KI to convert hypochlorite to chloride. The liberated I2 required 22.85 mL of 0.214 M Na2S2O3 for titration. Calculate the % ClO–in the bleach.
4.18%
1.56%
2.72%
3.12%

A

1.56%

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32
Q

Calculate the weight of primary standard Na2C2O4 (134 g/mol) necessary to react with 25 mL of 0.2005 M KMnO4 in acidic medium.
0.671 gram
1.679 grams
1.343 grams
2.687 grams

A

0.671 gram

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33
Q

Hypochlorous acid decays in the presence of ultraviolet radiation. Assume that degradation occurs according to first-order kinetics and the rate of degradation was measured to be 0.12 day−1 (at a particular sunlight intensity and temperature). Given this, how long does it take for the concentration of hypochlorous acid to reach nondetectable levels (0.05 mg/L) if the initial concentration were 3.65 mg/L?
25 days
14 days
36 days
47 days

A

36 days

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34
Q

A 0.0722 M acid has pH of 3.11, what is the Ka of the acid?
4.20E-6
8.35E-7
8.35E-6
4.20E-7

A

8.35E-7

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35
Q

Following are pH ranges for several human biological materials. From the pH at the midpoint of each range, calculate the corresponding [H3O-]. Which materials are acidic? (1) Milk, pH 6.6–7.6 (2) Gastric contents, pH 1.0–3.0 (3) Spinal fluid, pH 7.3–7.5 (4) Saliva, pH 6.5–7.5 (5) Urine, pH 4.8–8.4 (6) Blood plasma, pH 7.35–7.45 (7) Feces, pH 4.6–8.4 (8) Bile, pH 6.8–7.0.
1, 4, 7, 8
2, 5, 6, 7
2, 5, 7, 8
1, 3, 7, 8

A

2, 5, 7, 8

36
Q

By nature, sulfur molecules can exist in various conditions such as S8, S2, and S. (1) Is the mass of one mole of each of these molecules the same? (2) Is the number of molecules in one mole of each of these molecules the same? (3) Is the number of atoms of sulfur in one mole of each of these molecules the same?
Yes, No, Yes
Yes, Yes, No
No, Yes, Yes
No, Yes, No

A

No, Yes, No

37
Q

Which among the following has the highest boiling point?
1.0% soln. of (NH2)2CO
1.0% soln. of NaCl
1.0% soln. of ZnSO4
1.0% soln. of C6H12O6

A

1.0% soln. of NaCl

38
Q

A Chemical Engineer decided to make a twist with the old Filipino song “Ako ay may Lobo”. If the child had a 500 mL balloon (5/6 of its Maximum Stretching Capacity) filled with H2 gas, at what height will the child no longer see the balloon since it has burst? Assume that the pressure decreases 1 mm for every 100 cm rise in height.
85 m
127 m
149 m
233 m

A

127 m

39
Q

J.J. Thomson is well known for his discovery of the existence of the electron. An apparatus similar to his would produce a ______ light signifying the interaction of the glass tube and the cathode rays. The charge of the electron, on the other hand, was determined by ______ through his ingenious Oil- Drop Experiment.
Blue, Hans Geiger
Red, James Chadwick
Yellow, Ernest Marsden
Green, Robert Millikan

A

Green, Robert Millikan

40
Q

Human Chorionic Gonadotropin or hCG is a hormone that is primarily detected by which among the following tests?
Pregnancy Test
Kidney Function Test
Toxicology Test
Immunologic Blood Test

A

Pregnancy Test

41
Q

By what factor are the root-mean-square speeds changed if a gas is heated from 300 K to 400 K?
1.15
1.33
1.67
1.75

A

1.15

42
Q

In a normal adult at rest the average speed of flow of blood through the aorta is 0.33 m/s. The radius of the aorta is 9 mm and the viscosity of blood at body temperature, 37 °C, is about 4.0x10–3 kg/m-s Calculate the pressure drop along a 0.5 m length of the aorta.
26 Pa
43 Pa
65 Pa
77 Pa

A

65 Pa

43
Q

A gas obeys the van der Waals equation with Pc = 3.04E6 Pa and Tc=473 K. Calculate the van der Waals constant b for this gas in m3/mol.
1.62E-4
2.97E-4
3.08E-4
4.41E-4

A

1.62E-4

44
Q

O2 gas effused through a pinhole in 5 sec. How long will it take an equivalent amount of CO2 to effuse under the same conditions?

4.3 s
3.8 s
5.9 s
2.2 s

A

5.9 s

45
Q

Consider the following reaction: C3H8 (g) + 5 O2 (g) = 3 CO2 (g) + 4 H2O (g) ∆H = -2202 kJ Which of the following applies to a forward reaction?

entropy – increases, enthalpy – decreases
entropy – increases, enthalpy – increases
entropy – decreases, enthalpy – decreases
entropy – decreases, enthalpy – increases

A

entropy – increases, enthalpy – decreases

46
Q

What is the ionic strength in M of a solution that is 0.1 M potassium nitrate and 0.2M potassium sulfate?
0.5
0.6
0.7
0.8

A

0.7

47
Q

Assume that the following exothermic reaction is at equilibrium:

H2 (g) = I2 (g) + 2HI(g)

Tell whether the position of equilibrium will shift to the right or the left if we
(1) Remove some HI
(2) Add some I2
(3) Remove some I2
(4) Increase the temperature
(5) Add a catalyst

right, left, left, right, no shift
left, left, right, right, no shift
right, right, left, right, right
right, right, left, left, no shift

A

right, right, left, left, no shift

48
Q

Calculate the degree of dissociation for a 0.010-m solution of HCl that freezes at 273.114 K.

0.96
0.94
0.88
0.80

A

0.94

49
Q

A constant current was passed through a solution of CuSO4 for 1 hour and 0.040 g of copper was deposited. What is the current?

33.76 mA
8.44 mA
16.88 mA
4.22 mA

A

33.76 mA

50
Q

In a study of the equilibrium H2 + I2 = 2HI 1 mol of H2 and 3 mol of I2 gave rise at equilibrium to x mol of HI. Addition of a further 2 mol of H2 gave an additional x mol of HI. What is K at the temperature of the experiment?

3
4
5
6

A

4

51
Q

The equilibrium constant for the reaction below is 20.0 at 40.0 °C: H2 + I2 = 2HI The vapor pressure of solid iodine is 0.10 bar at that temperature. If 12.7 g of solid iodine are placed in a 10- dm3 vessel at 40.0 °C, what is the minimum amount of hydrogen gas that must be introduced in order to remove all the solid iodine?

0.012 mol
0.027 mol
0.044 mol
0.063 mol

A

0.063 mol

51
Q

What is the theory in two or three dimensional collision to be applied when playing billiards and in order to sink the target ball in the corner pocket?

The center of the mass theory where the center of the mass of the system move as all the mass is the system were concentrated at that point., and one of them is initially at rest, and they were in the perpendicular direction of the collision.
Proton-proton elastic collision.
The component of momentum an isolated system in each of the directions (x,y,z) are conserved independently.
Where two equal masses undergo a glancing elastic collision.

A

Where two equal masses undergo a glancing elastic collision.

52
Q

Which has higher absolute entropy at a temperature of 250C, cyclopropane or propylene? Why?
Both have the same absolute entropy at normal temperature.
Propylene due to the free rotation around the carbon-carbon single bond.
Cyclopropane due to the free rotation around the carbon-carbon double bond.
None of these

A

Propylene due to the free rotation around the carbon-carbon single bond.

53
Q

Fatty acid such as lauric acid and palmitic acid and oleic acid are long unbranched carboxylic acids consisting of 12 to 20 carbon atoms. Which type of fatty acid should people avoid ingesting, saturated or unsaturated and why?
Saturated, because the risk of cardiovascular disease is increased.
Fatty acids are safe to ingest.
Unsaturated, because the risk of cardiovascular disease is increased.
Both fatty acids, because the risk of cardiovascular disease is increased.

A

Saturated, because the risk of cardiovascular disease is increased.

54
Q

Calculate the change in molar Gibbs free energy of liquid water treated as incompressible fluid when pressure is increased from 1.0 bar to 2.0 bar at 298 K.

0.9 J/mol
1.8 J/mol
2.7 J/mol
3.6 J/mol

A

1.8 J/mol

55
Q

A 0.08 m solution of a weak electrolyte ionizing into two ions freezes at -0.208 °C. Calculate the degree of dissociation.

11.8
60.2
88.2
39.8

A

39.8

56
Q

Consider three identical flasks filled with different gases at 273. 15 K Flask A: CO at 760 mmHg Flask B: N2 at 250 mmHg Flask C: H2 at 100 mmHg All of the following statements are incorrect except

Flask B gas molecules will have the greatest root mean square velocity
Flask C will have the greatest average kinetic energy.
Flask A gas molecules will have the least number of collisions per second with the container walls.
Flask C gas molecules will have the greatest root mean square velocity.

A

Flask C will have the greatest average kinetic energy.

57
Q

A 10.0 ml sample of wastewater with enough water to fill a 300 ml bottle has an initial DO of 9.0 mg/L. To help assure an accurate test, it is desirable to have at least a 3.0 mg/L drop in DO during the five-day run, and the final DO should be at least 3 mg/L. For what range of BOD5 would this dilution produce the desired results. Assume this test to be a five-day, unseeded BOD test.

60-190
70-150
90-180
80-170

A

90-180

58
Q

How many forms of nitrogen present in wastewater?

2
3
4
5

A

5

59
Q

A standard 5-Day BOD test is run using a mix consisting of three parts of distilled water and one- part wastewater. If the initial dissolve oxygen of the mix is 10 mg/L and after 5 days, the dissolved oxygen is 4 mg/L. The dissolved oxygen value after a long period of time is constant at 1 mg/L. Calculate the rate constant, k (day-).

0.22/d
0.24/d
0.25/d
0.23/d

A

0.22/d

60
Q

A standard BOD test is run using seeded dilution water. In one bottle, the waste sample is mixed with seeded dilution water giving a dilution of 2:30. Another bottle, the blank, contains seeded dilution water. Both bottles begin the test with DO at the saturation value of 9.2 mg/L. After five days, the bottle containing waste has DO equal to 2.0 mg/, while that containing just seeded dilution water has DO equal to 8.0 mg/L. Find the five-day BOD of the waste.

88
72
65
91

A

91

61
Q

ust below the point where a continuous discharge of pollution mixes with a river, the BOD is 10.9 mg/L, and DO is 7.6 mg/L. The river and waste mixture has a temperature of 20degC, a deoxygenation constant of 0.23/day, an average speed of 0.3 m/s, and an average depth of 3 m. Find the minimum value of DO if DOs = 9.1 mg/L.

5.7
4.4
6.0
7.1

A

5.7

62
Q

An appropriate empirical formula for bacterial cells is C5H7O2N. What would be the theoretical oxygen demand (mg/L) for 1 g of such cells?

1620
1980
1130
1570

A

1980

63
Q

The oxygen sag caused by a cannery reaches a minimum DO equal to 3 mg/L. Upstream from the cannery, the river DO is saturated at 10 mg/L and it has no BOD of its own. Just downstream from the discharge point, the DO is still essentially saturated (i.e. consider initial deficit to be zero so the downstream deficit is proportional to the initial BOD). By what percentage should the BOD of the cannery waste be reduced to assure a healthy stream with at least 4 mg/L DO everywhere?
19
11
14
17

A

14

64
Q

A wastewater treatment plant discharges 1.0 m3/s of effluent having an ultimate BOD of 40 mg/L into a stream flowing at 12.0 m3 /s. Just upstream from the discharge point, the stream has an ultimate BOD of 3.0 mg/L. The deoxygenation constant kd is estimated at 0.23/day. Assuming a constant cross-sectional area for the stream equal to 55 m2, what BOD would you expect to final at a point 10,000 m downstream?

5.2
7.3
6.5
4.8

A

5.2

65
Q

Given the following analysis of water sample in mg/L:
Cations
Ca2+ = 80
Mg2+ = 30
Na+ = 72
K+ = 6
Anions
Cl- = 100
SO42- = 201
HCO3- = 165

pH = 7.8

Find the magnesium non-carbonate hardness in mg/L as CaCO3.

125
140
132
116

A

125

66
Q

A water softener has 0.07 m3 of ion exchange resin with an exchange capacity of 46 kg/m3. The water use is 1500 L/day. If the incoming water contains 245 mg/L of hardness as CaCO3 and the softened water needs to be 100 mg/L as CaCO3, what is the time (in days) between regeneration cycles?

10
15
12
18

A

15

67
Q

Waxes are

Triglyceride
Fatty acids alcohol esters
Alkyl sulfonates
Salts of fatty acids

A

Fatty acids alcohol esters

68
Q

The rate of nucleophilic substitution reaction of tert-butyl bromide with OH– is found to be independent of the concentration of OH– at any instant. It can be inferred that the reaction is:

First-order (SN1)
Zero-order
Second-order (SN2)
Pseudo-first-order

A

First-order (SN1)

69
Q

Which of the following is true about SN1 reactions of alkyl halides (RX)?

A trigonal-bipyramidal transition state is formed after the nucleophile attacks the carbon attached to X
A two-step reaction mechanism (slow step and fast step) is involved.
The overall reaction follows a second-order kinetics.
All of these

A

A two-step reaction mechanism (slow step and fast step) is involved.

70
Q

Trimethyl-n-propylammonium is heated with KOH to yield N,N,N-trimethylamine and:
Propane
2-Propanol
n-Propanol
Propene

A

Propene

71
Q

Reduction of ethyl cinnamate using LiAlH4 produces the alcohol:

3-phenylprop-2-en-1-ol
2-phenylprop-2-en-2-ol
3-cyclohexylprop-2-en-1-ol
2-cyclohexylprop-2-en-2-ol

A

3-phenylprop-2-en-1-ol

72
Q

Styrene undergoes ozonolysis to yield two carbonyl compounds. Which of the following pairs is produced by this reaction?

Formaldehyde and benzoic acid
Benzoic acid and carbonic acid
Acetone and benzaldehyde
Benzaldehyde and formaldehyde

A

Benzaldehyde and formaldehyde

73
Q

In which reaction of alkyne can keto-enol tautomerism exist?

Markovnikov hydrohalogenation
Catalytic hydrogenation
Acid-catalyzed hydration
Ozonolysis

A

Ozonolysis

74
Q

Which of the following compounds is not aromatic?

Penanthrene
Anthracene
Hydroquinone
Tetrahydrofuran

A

Tetrahydrofuran

75
Q

Which of the following characteristic enzymes of gluconeogensis is not found in the cytosol?

Pyruvate carboxlyase
Fructose-l,6-bisphosphatase
Any of these
Glucose-6-phosphatase

A

Pyruvate carboxlyase

76
Q

Chylomicrons are synthesized in
blood
liver
intestine
pancreas

A

intestine

77
Q

Palmitate has 16 carbon atoms with
2 double bonds
3 double bonds
One double bond
None of these

A

None of these

78
Q

Who discovered vitamin C (ascorbic acid)?
Paul Berg
Linus Pauling
Albert Szent-Gyorgyi
Kerry Mull

A

Albert Szent-Gyorgyi

79
Q

With an increase in pressure in gaseous phase chemical reactions, the fractional conversion __________ when the number of moles decreases.

increases
decreases
remains unaffected
unpredictable from the data

A

increases

80
Q

Vitamin K1 was first isolated from alfalalfa and has the phytyl side chain consisting of

four isoprene units
six isoprene units
nine isoprene units
four isoprene units

A

four isoprene units

81
Q

A ketogenic amino acid is one which degrades to keto-sugars
either acetyl CoA or acetoacetyl CoA
pyruvate or citric acid cycle intermediates
multiple intermediates including pyruvate or citric acid cycle
intermediates and acetyl CoA or acetoacetyl CoA

A

pyruvate or citric acid cycle intermediates

82
Q

Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________ reaction.

elementary
parallel
autocatalytic
series

A

series

83
Q

In the normal breakdown of phenylalanine, it is initially degraded to

fumarate
tyrosine
lysine
phenylpuruvate

A

tyrosine

84
Q

Which of the following amino acids can form hydrogen bonds with their side (R) groups?
Asparagine
Aspartic acid
Glutamine
All of these

A

Asparagine

DAY 1 (5 decks)

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