Metabolism and Division in Protozoa

Fine Structure of Division in Ciliate Protozoa

The mitotic, micronuclear division of the heterotrichous genus Blepharisma has been studied by electron microscopy. Dividing ciliates were selected from clone-derived mass cultures and fixed for electron microscopy by exposure to the vapor of 2% osmium tetroxide; individual Blepharisma were encapsulated and sectioned. Distinctive features of the mitosis are the presence of an intact nuclear env...

Studies on the Metabolism of the Protozoa

A characteristic feature of euglenoid flagellates is that they synthesize granules of paramylon (paramylum) as reserve carbohydrate. We now report the results of a structural study of this polysaccharide from Astasia ocellata; a preliminary account of this work has been published (Manners, Ryley & Stark, 1964). Ast8ia ocellata is a freshwater flagellate (Class Euglenineae), being a nonphotosynt...

Studies on Cell Metabolism and Cell Division

1. Under the present conditions of experiment, Arbacia eggs were found to contain an average of 110 mg. of acid-hydrolyzable carbohydrate (calculated as glucose) per gm. of egg protein. This carbohydrate was almost all in the egg proper, little or none being found in the jelly. To permit conversion of the data to other bases of reference the relation of nitrogen content to wet and dry weight an...

Studies on the metabolism of the Protozoa. 7. Comparative carbohydrate metabolism of eleven species of trypanosome.

muscle, which is particularly great with DNP. Further experiments on these problems are in progress. SUMMARY 1. The influence of 2:4-dinitrophenol, methylene blue, brilliant cresyl blue, thionine, phenosafranine and Janus Green B on the oxidative phosphoryl-ation of mitochondria isolated from liver, kidney, brain, heart and skeletal muscle of rats has been studied in vitro as well as in vivo. 2...

Studies on the metabolism of the Protozoa. III. Metabolism of the ciliate Tetrahymena pyriformis (Glaucoma piriformis).