Ribozymes - Study guides, Class notes & Summaries

Straighterline Microbiology Final Exam 2024 Questions With 100% Correct Answers The study of evolutionary relationships among organisms is called ______. - answerphylogeny The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______. - answerLast Universal Common Ancestor Organisms called parasites are ______. - answeralways harmful to their host Which of the following does not indicate microbe involvement in energy and nutrient flow? - answerThermal hot spr...

TEST BANK FOR MICROBIOLOGY AND EVOLVING SCIENCE 5TH EDITION BY JOAN.L REAL EXAM QUESTIONS WITH VERIFIED SOLUTIONS Name: Class: Date: chapter 1 1. Viruses are a. infectious agents that infect exclusively multicellular organisms. b. noncellular particles that take over the metabolism of a cell to generate more virus particles. c. pathogens that replicate in complex growth media. d. cellular particles that belong to the archaea domain. lOMoAR cPSD| Downloaded by Elizabeth Whitney (...

BIO 250 | Microbiology Final Exam Questions and Answers (Graded A+ 2023) Straighterline. An irregular cluster of spherical cells would be called a/an a. Palisades b. Sarcina c. Staphylococcus d. Streptococcus e. Spirilla 2. The study of the immune response to infection caused by microorganisms is a. Hypersensitivity b. Epidemiology c. Immunology d. Morbidity e. Geomicrobiology 3. What is the maximum number of electrons in the first energy shell of an atom? a. 2 b. 4 c. 8 d. 18 e...

What is the most common electron carrier in biological systems? Correct Answer-NAD During the process of group translocation, glucose is brought into the cell and is chemically modified into what compound, which prevents it from leaving the cell? Correct Answer-Glucose-6-phosphate Where does the Krebs cycle take place in bacteria? Correct Answer-Cytoplasm For the most part, what type of energy operates cell transactions? Correct Answer-Chemical Which of the following is the substrate...

USABO Latest Update with Verified Solutions Eukaryote An organism whose cells contain complex structures enclosed within membranes. The defining membrane bound structure thats sets them apart from prokaryotic cells is the nucleas or nuclear envelope within which the genetic material is carried. All species of large complex species are eukaryotes, including animals, plants and funghi. Euchromatin This shows as pale areas in the nucleas under electro magnification. It is a less densly...

Prescott's Microbiology, 11e (Willey) Chapter 1 The Evolution of Microorganisms and Microbiology 1) Extant microorganisms are organisms from the fossil record that are no longer present on Earth today. Answer: FALSE Topic: Taxonomy of Microorganisms Bloom's/Accessibility: 2. Understand / Keyboard Navigation ASM Topic: Module 01 Evolution ASM Objective: 01.05 The evolutionary relatedness of organisms is best reflected in phylogenetic trees. Learning Outcome: 01.02a Propose a timeline of the ori...

The term used to describe all of the chemical reactions within a cell is ______. a. metabolism b. cellular respiration c. phosphorylation d. catabolism e. redox reactions correct answer: a. metabolism A type of cofactor would be ______. a. vitamins b. active sites c. ribozymes d. substrates e. metallic ions correct answer: e. metallic ions Ribozymes are ______. a. catalysts for DNA splicing b. unique to prokaryotes c. unique to eukaryotes d. catalysts for RNA splicing e....

Tyr122 is important in the mechanism of the E. coli ribonucleotide reductase. The function of this amino acid in the mechanism is to carry out a nucleophilic attack on the substrate. coordinate water in the active site. generate the Cys439 radical species. hydrogen-bond to the phosphates of the substrate. correct answers generate the Cys439 radical species. Which of the following is the reaction for nitric oxide synthase? citrulline + NO + 1.5 NADP+ L-arginine + 1.5 NADPH + H+ + 2O2 ...

Ribozymes - ANSWER RNA molecules that function as enzymes Primary transcript - ANSWER the initial RNA transcript from any gene, including those specifying RNA that is not translated into a protein mRNA - ANSWER an RNA molecule that carries a genetic message from the DNA to the protein-synthesizing machinery of the cell template strand - ANSWER One of the two DNA strands (out of the two) that gets transcribed-- it provides the pattern or template for the sequence of nucleotides in an RNA...

First cells would have been autonomous, membrane-bound units capable of self-replication requiring - ANSWER-nucleic acids RNA - ANSWER-• RNA has catalytic activity (ribozymes) .• First enzymes could have been RNA. • Earliest self-replicating molecules could have been RNA. • Proteins are better catalysts and DNA is more stable than RNA Earliest organisms: - ANSWER-• Probably primary heterotrophs .• Derived nutrients from the environment. • No need to synthesize own food aut...