chapter three. - 1.c because a carbohydrate contains an atoms of carbon and hydrogen Pg 36 2.c carbon with a total of 6 electron has 4 in the outer

chapter three. - 1.c because a carbohydrate contains an...

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1.c- because a carbohydrate contains an atoms of carbon and hydrogen. Pg 36 2.c- carbon with a total of 6 electron has 4 in the outer shell. Pg 36 3.a- a nucleic acids monomer is called nucleotide. Pg 48 7.a- glucose , with 6 carbon backbone and is a single sugar molecule (energy) Pg 39 8.a- plant cell walls contain cellulose which is most abundant organic molecule. Pg 40 9.c- Keratin, the protein that contributes to hair and fingernails. Pg 45 10.b Steroids are lipid that possess a unique carbon skeleton made of 4 fused rings. Pg 44 11.d Nucleic acids monomer is called a nucleotide. Pg 48 12.b Lipids are insoluble in water due to their long, nonpolar hydrocarbon chains and their relative lack of hydrophilic functional groups. Pg 40 13.d complementary base pairing allows DNA to pass genetic info to RNA. Pg 49 14.c Some proteins have secondary structures, either helices (keratin) or pleated.(silk)
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Unformatted text preview: Pg 47-figure 3 16.a because three long fatty acid are attached to the glycerol molecule, fats and oils. Pg 42 25.d plant cell walls contain Cellulose. Pg 40 26.d all DNA and RNA have three parts, a phosphate, a 5 carbon sugar and a nitrogen Pg 48 Containing base. 27.a- many proteins are enzymes. Pg 45 28.a- Cholesterol is a component of an animal’s cell’s plasma membrane ,and is the precursor of other steroids, such as the sex hormones testosterone and estrogen. Pg 44 29.a- 30.a- the resulting covelant bond between two amino acids is called a peptide bond. Pg 46 31.b- RNA differs from DNA not only by sugar but also because it uses base uracil (U) instead of thymine. Whereas DNA is double- stranded, RNA is single stranded. Pg 48-49...
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