Micrococcal nuclease releases individual nucleosomes from chromatin as particles. Endonucleases Intermediate Structures?
Both the 10 nm fiber and the 30 nm fiber were first seen by electron microscopy. Higher packing of the nucleosomes into “inactive heterochromatin” may involve Non-histone proteins. The path of nucleosomes in the chromatin fiber High salts H1
The heritable factors that Mendel studied are now known as: a) Nucleic acids b) Amino acids c) Genes d) Unit factors e) Peptides Different forms of the same gene are known as: a) Peptides b) Amino acids c) Proteins d) Alleles e) Gene differences The building blocks of genes are: a) Proteins b) Amino acids c) Nucleic acids d) Lipids e) Carbohydrates
The main components of a membrane in a cell are: a) Lipids b) Proteins c) Carbohydrates d) Lipids and Proteins e) Lipids and Carbohydrates Prokaryotes can be characterized by: 1.The lack of a true nucleus or compartment in which the DNA is located 2. The unique cell walls composed of murein 3. The lack of mitochondria 4. All of these a) 1 b) 2 c) 3 d) 4 e) 1 and 3
Which large organic molecules are essential chromosome components? a) Lipids and proteins b) Proteins and nucleic acids c) Nucleic acids and polysaccharides d) Proteins and polysaccharides Which of the following is a type of nucleic acid? a) DNA b) RNA c) DNAse d) RNAse e) DNA and RNA In Sia and Dawson's 1931 experiment: a) Mice were required to demonstrate the transforming principle b) Used serum to precipitate IIIS cells from a mixture of heat-killed IIIS and living IIR cells c) They showed that mice play no direct role in the transforming principle d) Heat-killed IIR cells mixed with living IIIS cells gave rise to IIR colonies e) None of these