#Question id: 10297
#Unit 6. System Physiology – Plant
The following statements are related to pentose phosphate pathway.
a) The first and third steps are oxidations with large, negative standard free-energy changes and are essentially irreversible in the cell
b) NADPH rises and inhibits the first enzyme in the pentose phosphate pathway. As a result, more glucose 6-phosphate is available for glycolysis
c) All the enzymes of the reversible reaction of the pentose phosphate pathway are located in the cytosol
d) The NADPH is used for biosynthetic reactions such as lipid synthesis and nitrogen assimilation in the cytosol
which one of the following combination of above statements is incorrect?
#Question id: 19695
#Unit 13. Methods in Biology
#Question id: 13129
#Unit 10. Ecological Principles
Biologists performed an experiment with flies to examine the effects of population size on the maintenance of genetic variation and on egg-to-adult survival. From a large source population, they randomly assigned eggs to three experimental populations of size N, equal to 20, 60, and0100. For later generations, they collected N eggs from each population and moved them into identical vials that co0ntained f2re0sh me4d0ium. Th6e0y coun8te0d the number of adult flies that emerged and used tissue samples from the adults for genetic analyses. Genetic variation was measured by scoring alleles at several polymorphic loci and expressed as the average number of alleles at those loci. The results are summarized in Figure 1 and Figure 2 below.
Based on Figure 1, which of the following best describes the change in genetic variation over time?
#Question id: 593
#Unit 1. Molecules and their Interaction Relevant to Biology
The time that is required for an enzyme to convert one substrate molecule into one product molecule is
#Question id: 9228
#Unit 9. Diversity of Life Forms
Use the following figure to answer the question
Looking at the figure showing the results of forest fragmentation, what can be said about edge effects?