This contrasts with the cell walls of fungi (which are made of chitin), and of bacteria, which are made of peptidoglycan. Cell walls perform many essential functions: they provide shape to form the tissue and organs of the plant, and play an important role in intercellular communication and plant-microbe interactions.
Chris and Taya Kyle met in 2001 and married just before he deployed for the first time at the start of the Iraq war, according to the book. Chris Kyle would deploy three more times to Iraq before retiring in 2009.
By Esther Lee. Amber Portwood confirmed to MTV News on Monday, Mar. 2 that she is engaged to her boyfriend Matt Baier -- see her engagement ring here Credit: Mark Davis/Picture Group. What a year for the ladies of Teen Mom! Amber Portwood is engaged to marry her boyfriend Matt Baier, MTV News confirmed on Monday, March 2. The dramatic new trailer for Teen Mom OG, which was released last week, showed Portwood, 24, receiving a proposal from her boyfriend.