Molecular Biology Answers

Have any research studies been performed to compare the physical movements of living organisms comparable in size to inorganic particles which experience Brownian thermal motions? If nothing else, might there exist significant differences in the mean-free-path lengths and directional characteristics of the living vs the dead particles?

what is the purpose of using glucose?

Process for pectinase production and substrate ' organisms and recovery method please early I need it soon plz

Which type of fermentation is better for a living system.. ethanol fermentation or lactic acid fermentation?

Rhodobacter lauracita is a newly discovered bacterium and is a manganesebased
photoautotrophy. Light provides the energy necessary to drive the
production of organic carbon. (Be careful, this question set is asking about
assimilation, rather than dissimilation reactions)
a. How much free energy in kJ/mol would be required to form one mole of
glucose (C6H12O6) if reduced manganese (Mn2+) served as the electron donor
for R. lauracita? Assume that Mn2+ is oxidized to the solid MnO2 (activity =
1), pH = 7, and that Mn2+ and glucose are present at 10-4 M. The partial
pressure of carbon dioxide is 10-3.5 atm. Give the answer in kJ per mole of
glucose produced.
E0’ (V)
1/2 MnO2(s) + 2 H+ + e- = 1/2 Mn2+ + H2O +0.58
1/4 CO2(g) + H+ + e- = 1/24 C6H12O6 + 1/4 H2O -0.43
Fe(OH)3(am) + 3 H+ + e- = Fe2+ + 3 H 2O +0.06

Rhodobacter lauracita is a newly discovered bacterium and is a manganesebased
photoautotrophy. Light provides the energy necessary to drive the
production of organic carbon. (Be careful, this question set is asking about
assimilation, rather than dissimilation reactions)
a. How much free energy in kJ/mol would be required to form one mole of
glucose (C6H12O6) if reduced manganese (Mn2+) served as the electron donor
for R. lauracita? Assume that Mn2+ is oxidized to the solid MnO2 (activity =
1), pH = 7, and that Mn2+ and glucose are present at 10-4 M. The partial
pressure of carbon dioxide is 10-3.5 atm. Give the answer in kJ per mole of
glucose produced.
E0’ (V)
1/2 MnO2(s) + 2 H+ + e- = 1/2 Mn2+ + H2O +0.58
1/4 CO2(g) + H+ + e- = 1/24 C6H12O6 + 1/4 H2O -0.43
Fe(OH)3(am) + 3 H+ + e- = Fe2+ + 3 H 2O +0.06

Below is a recipe of a medium attempted to isolate aerobic heterotrophic bacteria
from some environmental samples. Based on this recipe, do you think this
experiment will work? Explain your rationale. Also, which chemical is used as
an energy source in this case?
m.w. weight/volume
K2HPO4 174 7.0 g
KH2PO4 136 2.0 g
NH4Cl 53.5 1.0 g
MgCO3 84 0.1 g
CaCl2 111 0.05 g
Sodium Acetate 82 1.5 g
Trace elements in chloride forms (Fe, Co, Mn, Zn, Cu, Ni, Mo) 10 μg
Distilled water (pH 7) 1000 mL

2.2 Explain why eukaryotic cells undergo apoptosis.

3.2 Briefly explain the four levels of protein structure. In your answer refer to a
protein haemoglobin and catabolite gene activator protein where applicable.