Histone core is composed of two copies of each of histones H2A, H2B, H3 and H4, assembled in an octameric core
H2A is the core histone with the largest number of variants.So it is least conserved.
biology help 7. How many subunits does a histone core contain? 8. What are the subunits...
1. What are the structures of chromosomes 2. Identify the components of a histone core and describe how a nucleosome is assembled 3. Define the term “histone code”. 4. Identify common histone markers of hetero- and euchromatin. 5. Explain the relationship between methylated DNA and chromatin. 6. Identify types of enzymes involved in chromatin regulation 7. What type of data one can get from chromosome conformation capture (3C). 8. What type of data one can get from ChIP-Seq. 9. What...
Suppose that 4 tables in a production run of 50 are defective. A sample of 7 is to be selected to be checked for defects 9. How many different samples can be chosen? a. How many samples will contain at least one defective table? b. What is the probability that a randomly chosen sample of 7 contains at least one defective table? c. Suppose that 4 tables in a production run of 50 are defective. A sample of 7 is...
need help on biology 16. What is the definition of loneliness AND how does it differ from social isolation?
(Molecular Biology) What is the "second genetic code" and how does it relate to tRNA and synthetases? How many different synthetases are there in total in most organisms and why is their specificity important?
7. How does a repressor protein turn off the lac operon? 8. How does lactose turn on the lac operon? 9. Complete the table to describe the role of each regulatory region or molecule in the operation of the lac operon.
7. What does the term 'hydrate' mean? What would a pentahydrate formula be? How many water molecules are included in the formula? Draw the structure of oxalic acid (ethane dioic acid) C2H2O4. 8. 9. When the hydrogens on this molecule are removed with the help of ammonia as a base what will the charge on the molecule be? Draw it. 10. Look at the charge on cobalt and the charge on the oxalate ion you drew. What do yor now...
how many positive integers less than 1000 are there which contain one 4 or at least one 9 (or both)
need help with 7 & 8 please also a part D 7. How does the structure of estrogen differ from that of progesterone? Explain by highlighting the differences in respective structures. (10 pts) 8. a) Draw the structures of two amino acids that contain sulfur. (4 pts) I b) For the amino acids in 8a) give a three-letter and one-letter abbreviation. (4 pts) c) Describe each of the amino acids in 8a) as polar or non-polar. (4 pts) d) Are...
4. What is the language described by the grammar? How many sentences does the language contain? <Z> ::= <L> | <L> <L> | <L> <L> <L> <L> ::= a | b | c Please explain, I do not understand these problems
1. Identify the chemical elements of protein. How many amino acids are there that build body proteins. How many essential amino acids are there. 2. What is the difference between indispensable (essential), dispensable (nonessential), and conditionally indispensable (essential) amino acids. 3. What are the major functions of proteins in the body. 3. Describe nitrogen balance and the conditions that may result in positive and negative nitrogen balance. 4. What are complete and incomplete proteins. Identify food items that contain complete...