Biology 172 Exam #3 Bastow EWU Questions and Answers Rated A+

Biology 172 Exam #3 Bastow EWU Questions and Answers Rated A+ Some anaerobic bacteria react organic molecules (such as glucose) with sulfate in order to obtain the energy that they need for their growth. Based on what you know about cellular respiration, what role do you think sulfate plays in this reaction? A) it is used to transport electrons between stages of the reaction B) it is an electron acceptor C) it is an electron donor D) it has high potential energy that is released during the reaction E) it is a waste product B) it is an electron acceptor You discover a previously unknown single-celled organism growing on rocks at your field site. The organism does not have a nucleus, has a circular chromosome, has introns in its genes and is not affected by common antibiotics. What group does it most likely belong to? A) archaea B) bacteria C) excavata D) SAR clade E) archaeplastida A) archaea Photosynthesis occurs in multiple lineages of eukaryotes. What is one consistent difference between photosynthetic members of the Archaeplastida and the SAR clade? A) archaeplastida have green pigments while members of the SAR clade have red pigments B) photosynthetic archaeplastida are multicellular while members of the SAR clade are unicellular C) archaeplastida are sessile, while members of the SAR clade are mobile D) archaeplastida acquired their chloroplasts through a primary endosymbiotic event while members of the SAR clade acquired theirs through secondary endosymbiotic events E) there are no photosynthetic members of the SAR clade D) archaeplastida acquired their chloroplasts through a primary endosymbiotic event while members of the SAR clade acquired theirs through secondary endosymbiotic events Which best describes the life cycle of byrophytes such as mosses: A) both the gametophyte and sporophyte generations can live independently of the other B) the plant spends most of its life cycle in the gametophyte stage C) it lacks a sporophyte stage D) it produces both seeds and spore B) the plant spends most of its life cycle in the gametophyte stage One shared derived trait of land plants, not found in even the most closely related green algae, is A) cell division and growth occurs in specific regions of the plant, called apical meristems B) cellulose synthesizing proteins in the cell membranes are arranged by rings C) all land plants have vascular tissues, such as xylem and pholem D) chloroplasts, derived from cyanobacteria A) cell division and growth occurs in specific regions of the plant, called apical meristems many parasitic members of the ... have lost their mitochondria. A) excavata B) rhizaria C) archaea D) ciliates E) archaeplastida A) excavata