Biology Answers

The phylum Chordata includes a diverse group of vertebrates and
some marine invertebrates what evidence supports their common ancestry?

Why is the respiratory system of birds unique and what are the advantageous to this kind of
system and what circulatory system adaptations do both groups
have?

Gas levels in a cell culture can be measured using a gas analyser. How would you then control (increase/decrease) the amount of a gas in a cellular culture e.g. O2 or Co2?

What is the size of an enzyme-inhibitor molecule? i am focusing on an enzyme-inhibitor for acetylcholinesterase also known as AChEI?

I am working with an enzyme and need to inhibit the enzyme Acetylcholinesterase. Is there a methodology to take to select a given enzyme-inhibitor? Can you make any recommendations preferably the inhibitor should irreversible and non-competitive?

How many allosteric sites does the enzyme Acetylcholinesterase have??

What is the the size of a Cholinesterase molecule or the general size of an enzyme inhibitor molecule??

Q1. Complete the following for threonine, lysine, and tyrosine.
a. Draw the amino acid.
b. Circle the side chain.
c. Identify whether it is polar, nonpolar, acidic, or basic.
d. At what pH will it exist as a zwitterion?
e. What is the range of pH values when it will be positively charged?
f. What is the range of pH values when it will be negatively charged?

What kind of chemicals or factors can be used to break the intermolecular forces and disulfide bonds?

Please write the names of the main groups in which the proteins are classified according to their form and main function, and explain how a.a. distribution in proteins differs in these groups. Provide an example of a macromolecule or other complex structure representing each of the three types.