Ribozymes - Study guides, Class notes & Summaries

Straighterline BIO 202 Final Exam Questions and Answers | Latest Update | 2024/2025 | Graded A+ What is the role of ribozymes in cellular processes? Ribozymes are RNA molecules that catalyze chemical reactions, similar to enzymes, and play roles in processes such as RNA splicing. How do signal transduction pathways influence cellular responses? Signal transduction pathways transmit signals from outside the cell to inside, leading to various cellular responses and changes in b...

how many different types of hydrothermal vents are there? and what colors correct answers what are the four major features for defining life? correct answers bioentergetics, metabolism, information flow, evolution origin of respiration (generating energy from electrically charged membranes) correct answers energy flow (bioentergetics) RNS world (ribozymes) probably enzymes too correct answers metabolism (building marcromolecules) origin of DNA and natural selection correct answers i...

evolution the concept that all given organisms are related to each other though common ancestry Have scientists proven that life exists? No Big Bang Theory of how the universe formed 16-18 billion years ago Symbiosis the interaction between two different organisms living in close association "life coming together" Spontaneous Generation Theory that life arose spontaneously from inanimate matter. Not a widely held belief among scientists Biogenesis Hypothesis Theory that living matter c...

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 packed form of chromatin; 10% is even l...

Brooks Biodiversity Unit 1 Exam with Complete Solutions evolution the concept that all given organisms are related to each other though common ancestry Have scientists proven that life exists? No Big Bang Theory of how the universe formed 16-18 billion years ago Symbiosis the interaction between two different organisms living in close association "life coming together" Spontaneous Generation Theory that life arose spontaneously from inanimate matter. Not a widely held beli...

Among the oldest fossils on Earth are the microfossils from the Agnes gold mines of South Africa, which are ______ years old 3.2 billion In order to understand the origin of life on Earth, evolutionary biologists collaborate with: All of the above (chemists, geologists, atmosphere scientists) Which of the following statements about LUCA is NOT correct? It is meant to be a single organism Which two scientists elaborated on Darwin's idea of the "warm little pond" and formulated the "prebiot...

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...

Biology 1406 EXAM 2 questions n answers rated A+ In a closed system from which no energy can be removed and to which none can be added from outside, - correct answer Potential energy decreases, and entropy increases Catalysts essentially equal to enzymes but made of RNA are - correct answer ribozymes Which cellular component is responsible for the regulation of exchanges of substances between a cell and its environment? - correct answer the cell membrane Cells with greater than diploid...

Acellular Microbes correct answers viruses, Viroids, Prions, Prions Cellular Microbes correct answers Fungi, Protists, Bacteria, Archaea Domain Archaea correct answers - Unique rRNA sequences -Lack peptidoglycan - Unique Membrane lipids - some unusual metabolic characteristics Domain Bacteria correct answers - Usually single celled -Majority have peptidoglycan cell walls - ubiquitous Protoctista correct answers unicellular and multicellular eukaryotic organisms; may be auto or h...

Fungi - cell wall made of chitin; Eukaryote Algae - cell wall made of silicates, eukaryotic Protozoa - Eukaryote Bacteria - Prokaryotic Virus - Acellular; only reproduce if they are inside of a living cell What allows a substance to cross a membrane - Protiens Substances that will never pass through a membrane - Charged substances Passive movement processes - No ATP needed 1. Diffusion 2. Facilitaed Diffusion 3. Osmosis Active Transport processes - Uniport Aniport Sy...