Ribozymes - Study guides, Class notes & Summaries

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...

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....

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...

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...

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...

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...

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...

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...