img287 - 27 DNA l a exists as a double helix ’ lb...

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Unformatted text preview: 27. DNA: ' l . a) exists as a double helix ’ - - ' lb) contains bases attached directly to phosphate groups ' ‘ ‘ contains two polynucleotide strands linked to each other by hydrogen bonds both a and c are correct ' e) all of the above are correct 28L All of the following molecules are CORRECTLY MATCHED with their location or function EXCEPT: . glycogen -‘ liver ./ fibronectin - plant cell walls c) spectrln _ — erythrocyte cytoskeletoul/ d) hemoglobin - erythrocyte/ , e) chlorophyll ‘ - ‘ thylakoid membrane/ ,. 29. Which of the following CORRECTLY describes a junction between animal Cells in hich small molecules and ions can pass from cell to cell? é gap junction ' ' b) .desmosome c) tight junction d) plasmodesma e) none of the above 30. Which of the following is used as an energy storage molecule in animals ? a) cellulose ' b - glucose (cg glycogen ribose , e) starch ...
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