Some given statements about anti freezing are given;

a.some invertebrates to withstand temperatures as low as –18°C without freezing, in presence of glycoproteins

b.Sodium, potassium, or chloride ions involve to increasing  the blood freezing point, so the lack of these ions some species help to lower the blood freezing point

c.Amphibians release large amount of glucose into the blood to prevent freezing of blood in cold

d.Sodium, potassium or urea function as anti freezing in their blood

e.Glycine causes supercooling in plants

Which of the following statements about supercooling/anti freezing is correct?

#Question id: 23751

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 703

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements concerning protein domains is true?

#Question id: 913

#Unit 1. Molecules and their Interaction Relevant to Biology

The appropriate folding of a newly translated product is essential, and continual misfolding often leads to disease, especially in vertebrates. This misfolding, particularly in the situation of prion diseases, may be due to

#Question id: 912

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct about the native state of a protein

a. is unaffected by changes in temperature and pH.

b. corresponds to the highest Gibbs free energy state.

c. is determined by its primary amino acid sequence.

d. corresponds to the lowest entropic state.

#Question id: 911

#Unit 1. Molecules and their Interaction Relevant to Biology

The correct order for molecular chaperone–mediated protein folding is:

I – exchange of ATP for ADP on chaperone

II – chaperone undergoes conformational change, which affects protein folding

III – chaperone binds to exposed hydrophobic residues on unfolded protein

IV – folded protein is released

#Question id: 910

#Unit 1. Molecules and their Interaction Relevant to Biology

Experiments on denaturation and renaturation after the reduction and reoxidation of the —S—S— bonds in the enzyme ribonuclease (RNase) have shown that: