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What do facilitated diffusion and active transport have in common? What are the differences between them?
575How the chromosome region where the centromere is located is called? How are chromosomes classified in relation to the position of their centromere?
506What is autophagic intracellular digestion? Why is this type of intracellular digestion intensified in an organism undergoing starvation?
499which substance are microtubules made? In which structures and cellular processes do microtubules participate?
486What are the substances that constitute the chromatin? What is the difference between chromatin and chromosome?
480
Describe Bacteriophage growth?
Some animals have colors for protection. Which are they?
Explain the grafting of different rootstocks together ?
In mammals, somatosensory, visual, auditory, and olfactory sensory systems all project to the cerebral cortex. To what extent does this imply some common form of neural processing?
Where is csf found?
Garnet is the ore of which element. Give its chemical formula.
What is selective waste collection?
In sickle cell anemia, a hereditary disease, there is substitution of one amino acid by other in one of the four-polypeptide chains of hemoglobin. In this case, are all of the structural levels of the protein modified?
Explain how does the structure of a crab relate to its habitat?
In 3d-series, which two elements exhibit an anomalous configuration?
What does the expression –dc/dt indicates?
What are the raw materials used for the precipitation of Na2Co3 by Solvay ammonium Process?
Why is there little or no grass in the forest?
Define Hybridization?
Explain why would a tongue not detect mild sweetness after eating foods with high sweetness?
