53. Which of the following statements about glucose is false? a) its hydroxyl gr
ID: 272727 • Letter: 5
Question
53. Which of the following statements about glucose is false? a) its hydroxyl groups make it too hydrophilic to easily pass through cell membranes. b) When oxidized by the enzymes of the glycolytic pathway, it leads to the production of NADH and ATP. c) It serves as the building blocks of animal starch (glycogen). d) It serves as the building blocks of a plant starch like amylose. e) A single glucose molecule carries more energy than a single fatty acid molecule. 54. A molecule requires the aid of a protein to cross a plasma membrane and enter a cell. Based on that information, which of the following is false? a) The molecule may be polar (but not charged). b) The molecule may be crossing into the cell using secondary active transport. c) ATP may have to be hydrolyzed for this molecule to enter the cell. d) Certain cells may not allow entry of the molecule. e) None of the above 55. In humans ATP is hydrolyzed in order for to Fil in the blanks with the answer choices to correctly complete the sentence. a) the initial reactions of glycolysis b) potassium c) sodium d) kinesin e) water : proceed. : exit a cell. : enter a cell. : break apart the mitotic spindle. ; exit a cell. 56. An adenine nucleoside triphosphate may: a) Be used as an energy source-by cleaving the last phosphate group off. b) Be used as a substrate for an RNA polymerase. c) Be used as an energy source-by cleaving the last two phosphate groups off d) a) and b) e) a), b) and c 16Explanation / Answer
53] Option [ e] a single glucose molecule carries more oxygen than a single fatty acid molecule
Like glucose, fatty acids are released in the digestion of triglycerides and other lipids and are a huge storehouse of energy. They are broken down by a series of sequential reactions in the cell cytoplasm and mitochondria to release energy in the form of ATP. A single 14 carbon atom molecule of fatty acid can yield as much as 129 ATP molecules !!
54] Option [e] none of the above
The molecule may be polar and since it is crossing the PM with the help of a protein, it is secondary active transport. Energy might be required for this transport may be against a concentration or electrochemical gradient. It might not be allowed to cross the PM of certain cells because PM is selectively permeable.
55] In humans ATP is hydrolysed in order for [a] the initial reaction of glycolysis to proceed .
56] Option [e] a,b and c
Adenine nucleoside triphosphate perform various functions within the cell. They are the building blocks of RNA and also provide energy be cleaving off the phosphate molecules . They have three phosphate molecules and can cleave off two of them in subsequent reactions to liberate energy.
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