The plasma membrane of eukaryotes contains all of the following except ________.
A. phosphoglycerides
B. peptidoglycan
C. sphingolipids
D. sterols
Answer: B
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A bacterium is infected with an experimentally constructed bacteriophage composed of the T2 phage protein coat and T4 phage DNA. The new phages produced would have _____
A) T2 protein and T4 DNA. B) T2 protein and T2 DNA. C) T4 protein and T4 DNA. D) T4 protein and T2 DNA.
What is the difference between vitamins and minerals?
A. Vitamins cannot be made by our bodies, while minerals can. B. Vitamins are organic nutrients, while minerals are inorganic nutrients. C. Vitamins are inorganic nutrients, while minerals are organic nutrients. D. There are no main difference between vitamins and minerals.
What is the outcome of synapsis, a significant event in meiosis?
A) chiasma segregation B) side-by-side alignment of nonhomologous chromosomes C) dyad formation D) side-by-side alignment of homologous chromosomes E) monad movement to opposite poles
What would life on Earth be like today if eukaryotic protists had not evolved?
What will be an ideal response?