Question
1. Four elements make up 96% of the molecules involved chemical a) Oxygen, (0), b) Nitrogen (N), c) Carbon (C), d) Hydrogen (H) Ne in chemical evolution. Which of the following is not one of these? 2. During Chemical Evolution, elements reacted with each other to form sl norga compounds is thought to have been a critical solvent for elements and simple molec Oxygen ef Water molecules? a) Formaldehyde b) Carbon dloxide c) Ammonia d lipid bilayer was important because: a) the micelle formed through the bilayer by Diffusion of In the theory of chemical evolution, the formation of the micelle with a phosplolecules tr lowed molecules in spontaneously because of the properties of the polymer and acted as a bameyer. d) The H20 through the bilayer occurred easily. C) All lonic molecules moved easly internal environment to mix with the prebiotic soup outside the micelle throug a 4. lonic compounds tend to _?_ in aqueous solutions. a) chemically react with Ha dissociate o, b form covalent bonds with HO c) solidify d hibe buring Chemical Evolution, phospholipids are formed by dehydration synthesis involving a) Glyce Triglycerides + phosphate. c) Glucose+ 2 fatty acids+ phosphate. d) Glycerol + 3 faty acio rol+2 fatty acids glucose. b) Lipid soluble molecules such as steroids can pass across (dissolve in) the m dehydration synthesis, b) dissolve in water,c) ss across (dissolve in) the micelle phospholipid bilayer because they: a) perform are ionic ecause they a soluble in the Fatty Acids of the bilayer, e none are true. monosaccharide. A molecule composed of carbon, hydrogen, and oxygen in a 1.2:1 ratfo is a (n):a amino acid b) lipid c) protein d) 8. Miller conducted experiments that tested the hypothesis of chemical evolution. Which of the dissolved into the first oceans to form more complex molecules following molecules (gases) was thought to in the formation of the Earth's earliest atmosphere? a) CHa, b) CO2, c) NHs, d)H20, e) all of these because they A solution that has a Ph of 2.0 is: a) a base, b) neutral, c) neutral if H is added to H:0, d) an acid, e) none of these are true 10. DNA and RNA are polymers consisting of monomers called a) amino acids b) disaccharides c) NaNe d) nucleic acids e) nucleotides. 1. When amino acids are joined by the formation of peptide bonds, a molecule of ?_ is produced. ater b) carbon cj methane d) chit 2 The macromolecule that can bind to deoxyribose nucleotides and to amino acids is a) g NA c) Hormones d) Proteins e) DNA are the four nitrogenous bases found in RNA?a adenine, thymine, cytosine, guanine b) alanine, tryptophan, cysteine, glycine 14. Different amino acids are distinguished by a) the composition (structure) of their side chains, or R-groups" D) the location of their carboxdl group c) the location of adenine, thymine, cytosine, guanine R groups d) the repeating N-C-C structure of the chain, e) none of these adenine, guanine, cytosine, uracil d) alanine, guano, valine and tyrosine, e) none are correct. 5 Within the theory of Chemical Evolution, polypeptide molecules have the potential or great b logical importance because a the 20 potential monomers are connected in long, chains, b) their spécific shapes enables polypeptides to specifically bind other molecules that have unique shapes, c) The shape of each polypeptide is related to the types of 'R' groups, d) Small changes in the sequence of amino acids change the shape of the polypeptideAll are true 6 Given your understanding of Chemical Evolution what would cause the formation of the polysaccharide, glycogen, to form in a micelle? a) High amounts of polypeptides high glucose, c) high chitin d) high cellulose e) allare about the same e functional importance of the complex shapes of Nucleic acids is related to the: a) "R' groups, b) repeating N-C-C-N-C-C part of the molecular chain, c) polar properties of fatty acids aNitrogenous bases bound to the Phosphate, e) All are true
Explanation / Answer
1) The correct option is e. Neon(10Ne).
Four elements, which make up 96 percent of living matter are oxygen, carbon,hydrogen, and nitrogen.
2) The correct option is e. Water.
During chemical evoltion , elments reacted with each other to form small inoragnic molecules. Water is a critical solvent for elements and simple molecules.
3) The correct option is a. The micelle formed spontaneously because of the properties of the polymer and acted as a barrier to movement of molecules through the bilayer.
When phospholipids are present in water, the molecules spontaneously arrange such that the tails are protected from the water and results in the formation of membrane structures such as bilayers, vesicles, and micelles.
4) The correct option is e. Dissociate.
When ionic compounds dissolve, the individual ions dissociate and are solvated by the solvent and dispersed during the resulting solution, because the ions are released into solution when dissolved and can conduct charge.
