Biology and Genetics

1.- How many grams of gold (Au) are there in 15.3 moles ofAu? 2.- Which of the f

1.- How many grams of gold (Au) are there in 15.3 moles ofAu? 2.- Which of the following has greater mass: 2 atoms of leador 5.1 x 10-23 mole of helium? And which has more atoms:1…

1.- Indicate which of the following sets of quantum numbers inan atom are unacce

1.- Indicate which of the following sets of quantum numbers inan atom are unacceptable and explain why: a) (1,1,+1/2,-1/2),  b) (3,0,-1,+1/2),   c)(2,0,+1,+1/2),   d) (4,3,-2,+1/2…

1.- Is the energy absorption associated with \"bands\"in aninfrared spectrum of

1.- Is the energy absorption associated with "bands"in aninfrared spectrum of higher or lower energy than the "lines"appearing in a visible line spectrum? Explain. 2.- Identify th…

1.- Magnesium(used in the manufacture of light alloys) reactswith iron(III) chlo

1.- Magnesium(used in the manufacture of light alloys) reactswith iron(III) chloride to form magnesium chloride and iron. Amixture of 41.0 g of magnesium and 175 g of iron(III) ch…

1.- Menthol is a flavoring agent extracted frompeppermintoil. It contains C, H,

1.- Menthol is a flavoring agent extracted frompeppermintoil. It contains C, H, and O. In one combustion analysis,10.00 mg of the substance yields 11.53 mg H2O and 28.16mg CO2. Wh…

1.- Name following compounds: a) KH 2 PO 4 ,b) K 2 HPO 4 , c) HBr(gas), d) HBr(i

1.- Name following compounds: a) KH2PO4,b) K2HPO4, c) HBr(gas), d) HBr(in water), e)Li2CO3 f) K2Cr2O7, g)NH4NO2, h) HIO3, i)PF5, j) P4O6, k) CdI2,l) SrSO4, m) Al(OH)3, n) KClO, o)…

1.- Nitric oxide (NO) reacts with oxygen gas to form nitrogendioxide (NO 2 ), a

1.- Nitric oxide (NO) reacts with oxygen gas to form nitrogendioxide (NO2), a dark-brown gas: 2NO(g) + O2(g) -----> 2NO2(g) In one experiment 0.886 mole of NO is mixed with 0.5…

1.- Paradichlorobenzene, contains only C, H, and Cl and has amolar mass of about

1.- Paradichlorobenzene, contains only C, H, and Cl and has amolar mass of about 147 g. Given that combustion of 1.68 g of thiscompound produces 3.02 g CO2 and 0.412 g H2O,determi…

1.- Phospine, anextremely poisonous and reactive gas, will react with oxygen tof

1.- Phospine, anextremely poisonous and reactive gas, will react with oxygen toform tetraphosphorus decoxide and water vapor, according to thefollowing equation: 4PH3(g) + 8O2(g)-…

1.- Silicon tetrachloride (SiCl 4 ) can be preparedby heating Si in chlorine gas

1.- Silicon tetrachloride (SiCl4) can be preparedby heating Si in chlorine gas: Si(s) + 2Cl2(g) ----->SiCl4(l) In one reaction, 0.507 mole ofSiCl4 is produced. How many moles o…

1.- Suppose that photons of blue light (430 nm) are used tolocate the position o

1.- Suppose that photons of blue light (430 nm) are used tolocate the position of a 2.80 g Ping-Pong ball in flight and thatthe uncertainty in the position is equal to one wavelen…

1.- The atomic masses of 203 Tl and 205 Tlare 202.972320 and 204.974401 amu, res

1.- The atomic masses of 203Tl and 205Tlare 202.972320 and 204.974401 amu, respectively. Calculate thenatural abundances of these 2 isotopes. The average atomic mass ofthallium is…

1.- The number of resonance structures for the nitrite ionnthat satisfy the octe

1.- The number of resonance structures for the nitrite ionnthat satisfy the octet rule is: a) 1   b) 2   c) 3   d) 4 e) 5 2.- In the Lewis structure of the carbonate ion that sati…

1.- The orbital diagram for a ground state oxygeen atom is:???? 2.-Which ground

1.- The orbital diagram for a ground state oxygeen atom is:???? 2.-Which ground state atom has an electron configurationdescribeed by the following orbital diagram? a)phosphorus  …

1.- Use the Aufbau principle to obtain the ground-stateelectron configuration of

1.- Use the Aufbau principle to obtain the ground-stateelectron configuration of selenium and technetium. 2.-Group the following electron configurations in pairs thatwould represe…

1.- What is the % yield for the reactionPCl 3 (g) + Cl 2 (g) -----> PCl 5 (g)if

1.- What is the % yield for the reactionPCl3(g) + Cl2(g) -----> PCl5(g)if 127.0 g of PCl5 are formed when 83.4 g ofCl2 react with excess PCl3?   a) 125% b) 51.9% c) 66.3% d) 31…

1.- What is the in internal energy when a system releases 75 Jof heat energy and

1.- What is the in internal energy when a system releases 75 Jof heat energy and does 54 J of work on its surroundings? a)21 J, b) -21 J, c) 129J, d) -1.4 J, e) -129 J 2.- A 275-g…

1.- What mass of lithium phosphate is needed to prepare 575 mLof a solution havi

1.- What mass of lithium phosphate is needed to prepare 575 mLof a solution having a lithium ion concentration of 0.250 M? a) 15.5 g   b) 23.2 g c) 44.4 g d) 70.0g e) 5.55 g 2.- 7…

1.- When 38 mL of 0.1250 M H 2 SO 4 isadded to 125 mL of a solution of BaCl 2 ,

1.- When 38 mL of 0.1250 M H2SO4 isadded to 125 mL of a solution of BaCl2, a precipitateof BaSO4 forms. The BaSO4 is thenfiltered from the solution, dried, and weighed. If the rec…

1.- Which of the following elements has the largest secondionization energy(IE2)

1.- Which of the following elements has the largest secondionization energy(IE2)? a) Na     b) Al     c)S     d) Cl      e)K 2.- Which of the following elements has the greatest (…

1.- Which of the following ions is isoelectronic withKr? a) Ru 2+ b)Cl - c)I - d

1.- Which of the following ions is isoelectronic withKr? a) Ru2+    b)Cl-    c)I-     d)In3+    e) Sr2+ 2.-Which of the following elements has the smallest firstionization energy?…

1.- Which of the following is the reducing agent of thefollowing reaction 5Fe 2+

1.- Which of the following is the reducing agent of thefollowing reaction 5Fe2+(aq) + MnO-4(aq) +8H+(aq) ----------> 5Fe 3+(aq) +Mn2+(aq) + 4H2O(l) a) Fe2+     b)MnO4     c)H+ …

1.- Which of these atoms has the smallest radius? a) Si b) S c)Se d) I e) Na 2.-

1.- Which of these atoms has the smallest radius? a) Si   b) S    c)Se    d) I    e) Na 2.- Which of the following choices is the general electronconfiguration for the valence ele…

1.- Write the formulas of the following compounds: a) rubidiumnitrite, b) boron

1.- Write the formulas of the following compounds: a) rubidiumnitrite, b) boron trichloride, c) silver perchlorate, d) ammonium sulfate, e) iodine heptafluoride, f) potassiumdihyd…

1.- a) Mitosis b) S phase c) Anaphase d) grossing over e)G1 phase f) Diploid g)

1.- a) Mitosis b) S phase c) Anaphase d) grossing over e)G1 phase f) Diploid g) G2 h) Meiosos i) Independent assortment j) Prophase k) Prophase II l) Haploid m) Telophase n) G0 o)…

1.- a) Tundra b) Targa c) Coastal Wetland d) Desert e) Brackish Swamp f) Tropica

1.- a) Tundra b) Targa c) Coastal Wetland d) Desert e) Brackish Swamp f) Tropical Rain Forest g) Temperature diciduous fores h) Chaparral i) Temperature rain forest *Annual rainfa…

1.- a) Tundra b) Targa c) Coastal Wetland d) Desert e) Brackish Swamp f) Tropica

1.- a) Tundra b) Targa c) Coastal Wetland d) Desert e) Brackish Swamp f) Tropical Rain Forest g) Temperature diciduous fores h) Chaparral i) Temperature rain forest *Annual rainfa…

1.- a) two b)Diploid c) Hemizygous d) Allele e)four f) fertilization g) Mitosis

1.- a) two b)Diploid c) Hemizygous d) Allele e)four f) fertilization g) Mitosis h) heterozygous i) genes j) Meiosis k) One l) homozygous m)punnett square -An individual with two i…

1.- the electron configuration of a neutral atom is1s 2 2s 2 2p 6 3s 2 . Write a

1.- the electron configuration of a neutral atom is1s22s22p63s2. Write acomplete set of quantum numbers for each of the electrons. Name theelement. 2.- Indicate the total number o…

1.-A 0.972-g sample of aCaCl 2 . 2H 2 O/K 2 C 2 O 4 . H 2 Osolid salt mixture is

1.-A 0.972-g sample of aCaCl2.2H2O/K2C2O4.H2Osolid salt mixture is dissolved in ~150 mL of deonized water. Ifthe solid salt mixture contained 0.375 g ofCaCl2.2H2O, what is the % m…

1.-A metal ion with a net + 3 charge has five electronsin the3d subshell. Identi

1.-A metal ion with a net + 3 charge has five electronsin the3d subshell. Identify the metal. 2.-Two atoms have the elctron configurations1s22s22p6 and1s22s22p63s1. The firstioniz…

1.-Determine the mole fractions and partial pressures ofCO 2 , Ch 4 and He in a

1.-Determine the mole fractions and partial pressures ofCO2, Ch4 and He in a sample of gas thatcontains 0.250 mole of CO2, 1.29 moles ofCH4, and 3.51 moles of He, and in which the…

1.-For a double stranded DNA molecule in which 15% of the bases are A, what can

1.-For a double stranded DNA molecule in which 15% of the bases are A, what can you conclude about the base C? Would you expect the Tm of this DNA? (Refer the figure below) 2.-You…

1.-For each of the following pairs of hydrogen orbitals,indicate which is higher

1.-For each of the following pairs of hydrogen orbitals,indicate which is higher in energy: a) 1s, 2s;   b) 2p,3p; c) 3s, 3d; d) 3dxy,3dyz;   e) 4f, 5s; 2.-Which orbital in each o…

1.-Name the nitrogen process occurring, or likely to occur, in the described sit

1.-Name the nitrogen process occurring, or likely to occur, in the described situations. a) Addition of NH4+ fertilizer to warm, moist, aerobic soil with pH 6.5 ________________ b…

1.-T or F Bio-available N is commonly the most limiting nutrient in terrestrial

1.-T or F    Bio-available N is commonly the most limiting nutrient in terrestrial ecosystems. 2.-T or F    Acid soils can result in greater solubility of many transition metal sp…

1.-The density of a particular metal is 8.98g/cm 3 a) What is that density in po

1.-The density of a particular metal is 8.98g/cm3a) What is that density in pounds per cubic inch?(1 in = 2.54cm;1lb = 454g) Possible answers: A)0.324 lb/in3 , B)0.0502lb/in3 , C)…

1.-The following eq. represents the complete combustion ofethane: 2C 2 H 6 (g) +

1.-The following eq. represents the complete combustion ofethane: 2C2H6(g) + 7O2(g) ---->4CO2(g) + 6H2O(g) At the same temperature and pressure, what is the maximumvolume in li…

1.-The total number of valence(bonding) electrons in amolecule acetone (CH 3 COC

1.-The total number of valence(bonding) electrons in amolecule acetone (CH3COCH3) is: a) 6   b) 12 c) 18   d)24   e) 30 2.- Which of the following substances has an incomplete oct…

1.-Varius questions: a) What is the smallest atom in group 7A?b) Arrange the fol

1.-Varius questions: a) What is the smallest atom in group 7A?b) Arrange the following atoms in order of inceasing atomicradius: Na, Al, P, Cl, Mg. 2.-Arrange the following in ord…

1.-Which of the following can be done to minimize soil and nutrient loss? (Selec

1.-Which of the following can be done to minimize soil and nutrient loss? (Select ALL correct answers) (a) Till soils (b) Terracing (c) Plant cover crops and/or grass contour stri…

1.-Which of the following has no net dipole moment? andwhy? a) H 2 O b)NF 3 c)H

1.-Which of the following has no net dipole moment? andwhy? a) H2O     b)NF3    c)H2Se    d)TeO3     e) CH3Cl 2.- Which of the following molecules is polar? and why? a) CH4   b) C…

1.-Which of the following statements is NOT true about mycorrhizae? a. Mycorrhiz

1.-Which of the following statements is NOT true about mycorrhizae? a. Mycorrhizae contribute to plant nutrient uptake especially the uptake of phosphorus. b. All plants need myco…

1.-Why are group 1 B elements more stable than group 1 Aelements even though the

1.-Why are group 1 B elements more stable than group 1 Aelements even though they seem to have the same outer electronconfiguration, ns1, where n is the principal quantumnumber of…

1.-Write ht eground state electron configurations of thefollowing ions, which la

1.-Write ht eground state electron configurations of thefollowing ions, which lay important roles in biochemical processesin our bodies: a) Na+, b) Mg2+, c)Cl-, d) K+, e) Ca2+, f)…

1.-the chem eqn for the metabolic breakdown of glucose(C 2 H 12 O 6 ) is the sam

1.-the chem eqn for the metabolic breakdown of glucose(C2H12O6) is the same as that forhte combustion of glucose C6H12O6 (aq) +6O2(g) ------> 6CO2(g) +6H2O(l) calculate the vol…

1.. Calculate the inspiratory capacity, vital capacity, and total lung capacity

1.. Calculate the inspiratory capacity, vital capacity, and total lung capacity for a patient with the following respiratory volumes. i. Tidal volume = 450ml ii. Expiratory Reserv…

1.. Focus on one specific chronic illness like lung cancer a. Select India and c

1.. Focus on one specific chronic illness like lung cancer a. Select India and compare it with usage of a selected telehealth tool like teleoncologyin the US, and how you can pers…

1.. Polymorphisms for a given trait are relatively common in most species. Discu

1.. Polymorphisms for a given trait are relatively common in most species. Discuss the possible advantages or polymorphisms in terms of evolutionary fitness. Be sure to relate you…

1.. Protein X has a single N-terminal ER signal sequence, while protein Y has a

1.. Protein X has a single N-terminal ER signal sequence, while protein Y has a single internal ER signal sequence. Which of these two proteins will be found in the ER lumen (Answ…