A solution of starch at room temperature does not readily decompose to form a solution of simple sugars because _____
A) the starch solution has less free energy than the sugar solution
B) the hydrolysis of starch to sugar is endergonic
C) the activation energy barrier for this reaction cannot easily be surmounted at room temperature
D) starch cannot be hydrolyzed in the presence of so much water
E) starch hydrolysis is nonspontaneous
Answer: C
You might also like to view...
Which of the following is a restriction placed on DNA polymerase?
A. DNA polymerase can attach new nucleotides only in the 5' to 3' direction. B. DNA polymerases must begin synthesis using an RNA primer. C. DNA polymerases must have a template strand to copy from. D. All of these are restrictions of DNA polymerase
Generally speaking, nutritionally variant streptococci require what ingredient not found in most conventional media?
a. Vitamin B6 b. Nalidixic acid and its components c. Nicotinamide adenine dinucleotide (NAD) enrichment d. Blood or blood products
What is chemiosmosis?
a. the synthesis of ATP by ATP synthase, using a proton gradient b. the production of NADH and FADH2 in cellular respiration c. the buildup of acetate in the cytoplasm in the absence of oxygen d. the breakdown of oxygen as it enters the mitochondria e. the release of CO2 as glucose is oxidized in cellular respiration
Following with of these time periods was there
NOT a mass extinction?
a. Ordovician b. Devonian c. Permian d. Silurian e. Triassic