What is unusual about the amino acid composition of histones? How is the function of histones related to the amino acid composition? Of which histones are nucleosomes composed?
What will be an ideal response?
Histones contain large amounts of positively charged amino acids such as lysine and arginine. Thus, they can bind electrostatically to the negatively charged phosphate groups of nucleotides. Nucleosomes are composed of all histones except H1.
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Any process that results in a decrease in the free energy of the system is called ________.
Fill in the blank(s) with the appropriate word(s).
Chromosome number for a species is 34. When a cell divides by mitosis, the daughter cells have how many
chromosomes? a. 17 b. 34 c. 51 d. 68 e. 119
Archaea (formerly known as archaebacteria) is one of the three major divisions of living organisms; the other two are eubacteria and eukaryotes. Nanoarchaeum equitans is in the Archaea domain and has one of the smallest genomes known, about 0.5 Mb
How can an organism complete its life cycle with so little genetic material?
The extinct vascular plants of our planet’s past likely lacked true leaves and bore the most resemblance to which modern-day group?
a. flowering plants b. trees c. mosses d. ferns