Answers:
a. We will see DNA fragments with 145-200 bps (only one band)
b. The DNA sequence linked to histones will be protected from the action of DNase I, thereby this enzyme only can cut linker DNA (i.e., 55 bp fragments). In consequence, it is expected to observe a single band with a length of approximately 145 to 200 base pairs
Answer:
The correct answer is option 2. "aldolase -phophoglucose isomerase (phosphohexose isomerase or glucose-6-phosphate isomerase)".
Explanation:
Phophoglucose isomerase, also known as Glucose-6-phosphate isomerase (GPI), is an enzyme that catalyzes the reversible conversion of glucose 6-phosphate into fructose 6-phosphate (aldose to ketose). This enzyme is essential in the glycolysis, because this enzyme catalyzes the first step of the metabolism of glucose. If mutants of Saccharomyces cerevisiae can grow on pyruvate or ethanol, but not sugars or glycerol it is likely that this enzyme is affected. This is explained because GPI has a role on metabolism of sugars or glycerol but not on the metabolism of pyruvate or ethanol.
The greatest biomass appears in the producer level. Every time biomass moves up the food chain some will be lost and therefor more abundant in the producers area.