When it functions as a "second messenger", cAMP a) acts outside the cell to influence cellular processes. b) acts "second in importance" to AMP. c) activates all cytosolic protein kinases. d) activates the cAMP-dependent protein kinase.
1760The reduction-oxidation (Redox) potentials of NADH and FADH2 show that the following reaction is spontaneous: a) FADH2 + NAD+ --> FAD + NADH b) FADH2 + NADP+ --> FAD + NADPH c) NADH + FAD --> NAD+ + FADH2 d) Reactions a) and b) are both spontaneous
1 6980The ATP synthase of bacteria is an Fl-like particle attached to the a) ends of proto-mitochondria. b) inner surface of the cell (or plasma) membrane. c) outer surface of the cell (or plasma) membrane. d) surface of protonic vesicles.
1 3371The yield of ATP/glucose unit in glycolysis with glycogen as the glucose source is a) 2.0 b) 2.5 c) 3.0 d) 4.0
1 3153Review your data from the entire module. Say we ask you to redo the purification.Is there any step that you could eliminate? Which one? Why can you eliminate it?
2 3743Why do proteins that recognize specific DNA sequences usually bind in the major groove of DNA?
2 4286An unusual structure is formed at the 5? end of each cellular mRNA. What is it? After this has formed, does the mRNA have a 5? terminus? Explain.
1 3133Splicing of pre-mRNA involves an unusual phosphodiester bond. Why is it unusual? What parts of the intron/exon form this bond?
1 3738Many genes are regulated in both a negative and a positive manner. The genes mediating lactose metabolism in bacteria are a classical example. What are the two small molecule ligands that control expression of these genes? What does each one do?
1 3462Some proteins profoundly alter the structure of DNA when they bind, bending it far out of its standard B configuration. Where do you think the energy comes from to distort the DNA?
1 3682Post New Bio Chemistry Questions
Ethylene on ozonolysis gives which chemical compound?
Which element in 1A group does not form peroxides?
Define Hybridization?
What are the structures of the products of this reaction, and how are they identified?
What is ph? What are the units of ph?
Explain standard feat of formation.
How can you determine the reaction, taking place at constant pressure delta (h)?
Compare and contrast feedback inhibition and enzyme repression?
How do the two complementary nucleotide chains of the dna facilitate the replication process of the molecule?
which property among the following generally decreases from top to bottom in a group 1a? 1. Electropositive, density, basic nature, classical reactivity
What are hydrophobicity scales, and how are they used?
What are the chemical bonds of the dna molecule that are broken for the replication process to occur?
What are dextrorotary compounds and levi rotary compounds?
How do hydrophobic and hydrophilic residues arrange themselves in globular proteins?
Describe the structure of a peptide giving the sequence.
