Biochemistry Answers

Progestrone is pregnency mantaining hormone, then why it is used in contraceptive pills?

Does this statement true or not?(passive transport uses energy whereas active transport consumes energy in the form of ATP).

does this statement true or wrong (passive transport uses energy whereas active movement consumes energy in the form of ATP)and how can it be correct

what is the name of scientist who discovered the periodic table

Milk of magnesia is sometimes used as a remedy for an “acid stomach”. Would you expect the pH of milk of magnesia to be less than 7, more than 7, or 7? WHY?

which of the following altrations of protein structure would have least affect on the ability of a protein to function as an enzyme?
a) alkylation of single Cys residue of protine with iodoacetate.

b)site-directed mutagenesis in which an Ile in the interior of the protein is replaced by a V al

c) Amidation of all Glu to Gln

d) faliure to remove the N- terminal hydrophobic peptide of all protein during processing

how taking our rocks and the rock cycle, minerals and coal (energy sources) would affect the living and non living world and how we depend on mining.

20 Lysine 15 Arginine and three histidine how much should be added asp and glu that pI is 9.93 , ie we have a zwitter ion.

I am teaching AP bio for the first time. I have a question about the oxidation of pyruvate. I see that pyruvate has a negative charge on the carboxyl end. During the oxidation of pyruvate CO2 is said to be oxidized and NAD is reduced to NADH. Where does the H come from to attach to the NAD? I feel like I am missing something obvious. thanks

when preparing the protein standards we used a tube tube without protein but including bradford reagent and an equivalent volume of 0.15 m nacl instead of protein. can we just use plain water to prepare tube t instead?