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The article entitled "Life on Earth" is trying to make the point that RNA likely included before DNA. Forthis article which of the following is false?
A. Chains of RNA nucleotides can form spontaneously on mineral surfaces.
B. The polynucleotide RNA chains can create a duplex and is twisted into a double helix in a manner very similar to DNA
C. Certain RNA nucleotide chains can fold upon themselves and adopt conformations that permit for them to catalyze chemical reactions.
D. Short RNA molecules can self-replicate if given with a catalyst.
Briefly explain about the Flexed-arm Hang Test? Persons who cannot do one pull-up may do the flexed-arm hang. Using the same hand position as in pull-ups, subject takes flexed-
Advantages and Disadvantages: of Organizational Charts Advantages a) Defining the Organizational Relationship Without a,chart, many people might view the organization as
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Devonian is the period of geologic time from 410 - 360 million years before the present. Life on land diversified, with amphibians appearing late in this period of time. Plants we
Q. Phylogenetic systems of classification? As already pointed out 'earlier that in Phylogenetic system, the plants are classified according to their evolutionary relationships.
How do mineral salts participate in enzymatic activity? Many mineral salts are cofactors of enzymes. i.e., they are substances without which enzymes do not work.
Periodicity (Phenology, Aspection) It refers to the study of seasonal changes in the community, that is, the periodic phenomena of organisms in relation to their climate. Peri
Draw a diagram of transverse section of mammalian bone and label the following parts in it: (i) Haversian canal (ii) Lacuna containing osteocytes (iii) Canaliculi
Determine the term Epitheliomuscular cell. Cells which line outer surface of cnidarians. These cell have two functions: first is to form the outer body covering of animal, seco
Explain Interactions of Macrominerals With Other Nutrients? Various nutrients interact with minerals thereby affecting their bioavailability. These interactions occur at differ
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