Certain unicellular eukaryotes, including diatoms and some yeasts, have mechanisms of nuclear division that may resemble intermediate steps in the evolution of mitosis. Which of the following is a characteristic feature of nuclear division in these organisms?

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#Question id: 7142

#Unit 5. Developmental Biology

Keeping in mind the fact that genes are often named for the phenotype of a mutation in that gene, what might be the phenotype of a mutation of the Distal-less gene of Drosophila?

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#Question id: 4858

#Unit 8. Inheritance Biology

Which of the following statements is true?

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#Question id: 24659

#Unit 2. Cellular Organization

Which two organelles are responsible for producing phospholipids and sphingolipids?

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#Question id: 18075

#Unit 13. Methods in Biology

At high salt concentrations, the mRNA containing poly(A) tails binds to the complementary oligo(dT) molecules of the affinity column, and so, mRNA will be retained; all other RNA molecules can be washed through the column by further high salt solution. finally, the bound mRNA can be eluted by using

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#Question id: 27404

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statement is correct regarding the Structural Lipids in Membranes

1.It acts as a barrier to the passage of polar molecules and ions

2.Membrane lipids are amphipathic: one end of the molecule is hydrophobic, the other hydrophilic

3.Membrane bilayers are formed only by the hydrophobic interaction only 

4.Both hydrophobic and hydrophilic interactions are responsible for membrane bilayer formation