Which of the following is cytidine? cytosine + guanine ribose + cytosine + phosphate group ribose + cytosine cytosine + deoxyribose
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Which of the following is cytidine?
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cytosine + guanine
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ribose + cytosine + phosphate group
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ribose + cytosine
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cytosine + deoxyribose
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- In a DNA oligonucleotide, two nucleosides are linked together with a: Phosphodiester bond Phosphatic bond Phosphoester bond Glycosidic bondThe linkage between individual nucleotides in DNA is known as a phosphodiester bond because— two esters are connected by a single covalent bond whose formation is catalyzed by a phosphate. a double bond is formed in the process of esterification of a phosphate group. a nucleoside diphosphate is involved and each phosphate forms one ester. a single phosphate is esterified to two deoxyribose units. two bonds are phosphorylated into one single bondHow many amino acids are present on the helix to the right? Any partially drawn amino acids count as one whole amino acid Circle one peptide bond and box one R group on the figure to the right Describe how a lack of Vitamin C in the diet will affect the overall structure of collagen. Figure 6-7 Illustration, Irving Gels. Image from the Irving Geis Collection/Howard Hughes Medical Institute. Rights owned by HHMI. Reproduction by permission only. Drotoinc
- Which of the following is always true of ribosomes? aM I CORRECT?Identify the structure that is circled in the image below: O cytosine O adenine O guanine O thymine « PreviousWhich of the following best describes how the secondary structure of a protein is formed? A B с D O=U a-helix H O=C N-H R-C-H C=0 H-N H-C-R O=C N-H R-C-H C=O H-N O-C N-H R-C-H C=O H-N N-H 0= H-C-R H-N C=O R-C-4 N-H O=C H-C-R 4-1 Ç=O R-C-H N-H 0=C H-C-R (=O R-C-H B-pleated sheet ionic bonds between the R groups of the polypeptide amino acids -Uh hydrogen bonds between the carboxyl and amino groups of non-adjacent amino acids covalent bonds between the carboxyl and amino groups of adjacent amino acids hydrogen bonds between the R groups of the polypeptide amino acids
- Which of the following is correct regarding nucleotide structure? Removal of the ribose-phosphate groups from thymidylic acid or thymidylate yields thymidine Removal of the ribose-phosphate groups from cytidine yields cytosine Removal of the phosphate group from guanylic acid or guanylate yields guanine. Removal of the phosphate group from adenylate or adenylic acid yields adenosineA pyrimidine(s) with a H-bond acceptor its middle position is/are a Cytosine b Uracil c Cytidine d ThymineWhich of the following enzymes creates a covalent bond that links amino acids in a polypeptide? Protein disulfide isomerase Hsp70 Peptidyl-prolyl isomerase Calreticulin
- Which bases can exist in either keto or enol forms? O Adenine O cytosine, Guanine, Thymine O Adenine, Cytosine O Adenine, Cytosine, Guanine O Guanine, ThymineAn N-linked glycoprotein contains a glycan covalently linked to which specific amino acid in a protein? Asparagine Glutamine Threonine SerinePlease discuss any two of the structures and functions of these 4 molecules. What do they have in common? How are they different? 1) Cellulose 2) Starch 3) Glycogen 4) Chitin
