DNA is a helical molecule consisting of two strands of ____________________ that is the primary carrier of ____________________ information
Fill in the blank(s) with correct word
nucleotides, genetic
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During a microarray analysis, cDNAs made from normal cells are stained with a green fluor and cDNAs from
abnormal cells are stained with a red fluor. Which of the following statements is true about the results of this experiment?
a. Red spots indicate genes that are under expressed in abnormal cells. b. Red spots indicate genes that are not expressed in abnormal cells. c. Red spots indicate genes that are overexpressed in abnormal cells. d. Red spots indicate genes that are overexpressed in normal cells. e. Red spots indicate pseudogenes.
Motility improved the fitness of these early cells because:
a. It allowed them to make a nuclear envelope. b. It caused them to acquire ribosomes. c. It allowed them to move away from predators and towards food. d. Two of the above. e. None of the above.
Which statement is NOT true about ferns?
Select one: a. The gametophyte stage lacks vascular tissue. b. The sporophyte stage lacks vascular tissue. c. Antheridia and archegonia develop on the prothallus of the gametophyte stage. d. Fertilization requires moisture for the sperm to swim to the egg within the archegonia. e. The sporophyte stage is the dominant generation.
The molecules of the mitochondrial electron transport chain are located:
A) in the stroma. B) in the mitochondrial matrix. C) in the intermembrane space. D) within in the inner membrane. E) in the cytoplasm.