_______permit the passage of molecules as large as 1.2 nm in diameter (molecules smaller than 1200 Da).

#Question id: 27130

#Unit 7. System Physiology – Animal

#Question id: 8682

#Unit 9. Diversity of Life Forms

Giardia intestinalis can cause disease in several different mammalian species, including humans. Giardia organisms (G. intestinalis) that infect humans are similar morphologically to those that infect other mammals, thus they have been considered a single species. However, G. intestinalis has been divided into different subgroups based on their host and a few other characteristics. In 1999, a DNA sequence comparison study tested the hypothesis that these subgroups actually constitute different species. The following phylogenetic tree was constructed from the sequence comparison of rRNA from several subgroups of G. intestinalis and a few other morphologically distinct species of Giardia. The researchers concluded that the subgroups of Giardia are sufficiently different from one another genetically that they could be considered different species

Which of the following changes would a modern systematist be most likely to make after learning of the results of the rRNA analyses?

#Question id: 3595

#Unit 8. Inheritance Biology

Ranch mink with the dark gray coat color known as Aleutian is homozygous recessive aa. Genotypes AA and Aa have the standard deep brown color. A mating of Aa  X Aa produces  four  pups. What is the probability of a perfect 3 : 1 distribution of standard to Aleutian?

#Question id: 10154

#Unit 6. System Physiology – Plant

The C2 oxidative photosynthetic carbon cycle on chloroplast metabolism, the functioning of the C2 oxidative photosynthetic cycle in three compartments: chloroplasts, peroxisomes and mitochondria such as;

a.) In the carbon cycle; the transfer two molecules of glycolate and recovers one molecule of glycerate and releases one molecule of CO2

b.) In the nitrogen cycle, one molecule of glutamate and recover one molecule of NH4 +

c.) In the oxygen cycle; contributes to the removal of H2O2 formed in the oxidation of glycolate by O2

i) Takes place in Peroxisome

ii) In Mitochondria

iii) In the Chloroplasts

Which of the following combination from the above statements is TRUE?

#Question id: 4717

#Unit 11. Evolution and Behavior

 If Darwin had been aware of genes and their typical mode of transmission to subsequent generations, with which statement would he most likely have been in agreement?