-Multicellular filament Sulfur granules Cellular septa (a) 10 um (b) 10 um FIGURE 11.9 Filamentous Sulfur-Oxidizing Bacteria Phase- contrast photomicrographs. (a) Multicellular filament of a Beggiatoa species; the septa separate the cells. (b) Multicellular filaments of a Thiothrix species, forming a rosette arrangement.

-Multicellular filament Sulfur granules Cellular septa (a) 10 um (b) 10 um FIGURE 11.9 Filamentous Sulfur-Oxidizing Bacteria Phase- contrast photomicrographs. (a) Multicellular filament of a Beggiatoa species; the septa separate the cells. (b) Multicellular filaments of a Thiothrix species, forming a rosette arrangement.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter23: Protists

Section: Chapter Questions

Problem 28CTQ: The chllorophyte (green algae) genera Ulva and Caulerpa both have macroscopic leaf-like and stem...

See similar textbooks

Similar questions

Using the ActiveModel for phosphofructokinase (Trypanosoma), describe the difference between the APO1, AP02, and holoenzyme conformations.
1. Channel proteins used for the bulk passage of water molecules across the cell membrane?2. The tonicity of the extracellular fluid that maintains the turgid appearance of plant cells?3. The tonicity of the extracellular environment causing plasmolysis of plant cells?4. Plant cells are said to be flaccid in this type of cellular environment or solution?
Proteoglycan aggregates in tissues form hydrated, viscousgels. Can you think of any obvious mechanical reason whytheir capacity to form gels is important to cell function?[Hint: Liquid water is virtually incompressible.]
In which direction will a lactoglobulin (pI 5.2) at pH 5.0 and at pH 7.0 move in an electric field [toward the anode, toward the cathode, or will remain stationary]? Explain your reasons.
Systematic name of sphingoid bases
Activity 6.3.1: Complete the Table Polysaccharide Unique Feature Important Function Chondroitin Heparin Hyaluronate Dermatan Sulfate Keratan Sulfate Mucin
Given: Cryo-EM structure of PCoV_GX spike glycoprotein 1. What can you tell me about the identity of the protein? 2. What is the importance of this protein?
In addition to spherical micelles and lamellar phases, a binary amphiphile-water mixture can also form extended cylindrical rolls, with the hydrophilic groups pointing out and the hydrophobic chains on the interior. Over whatcomposition range are such cylinders most likely to be found, relative to spherical micelles and planar layers?
Question- What is sere?
17. The unicellular alga Chlamydomonas reinhardtii has two flagella assembled from tubulin proteins. If a researcher changes the pH from approximately neutral (their normal growing condition) to pH 4.5, Chlamydomonas cells spontaneously lose their flagella. After the cells are returned to neutral pH, they regrow the flagella—a process called reflagellation. Assuming that you have deflagellated Chlamydomonas cells, devise experiments to answer the following questions: 1. Do new tubulin proteins need to be made for reflagellation to occur, or is there a reservoir of proteins in the cell? 2. Is the production of new mRNA for the tubulin proteins necessary for reflagellation? 3. What is the optimal pH for reflagellation?
Define Surface Coatings: The S Layer and the Glycocalyx.
In which direction (into or out of the cell) will water flow incells of Escherichia coli (an organism found in your largeintestine) suddenly suspended in a solution of 20% NaCl?What if the cells were suspended in distilled water? If growthnutrients were added to each cell suspension, which (ifeither) would support growth, and why?