What are the two most important variables for cells to survive?
a. Temperature and pH
b. Temperature and solute concentration
c. Solute concentration and nutrient levels
d. Solute concentration and pH
e. Temperature and nutrient levels
b
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Which of the following processes is least likely to be coupled to eukaryotic transcription?
A. DNA repair B. DNA replication C. RNA processing D. mRNA transport E. All of the choices given are coupled to eukaryotic transcription.
In a eukaryotic cell, the electron transport system occurs in the
A. ribosome. B. lysosome. C. mitochondrion. D. nucleus. E. cytoplasm.
Which blood component functions in transport of oxygen?
1.Erythrocytes (red blood cells) 2.Leukocytes (white blood cells) 3.Lymphocytes 4.Neutrophils 5.Platelets
An incompletely dominant gene controls the color of
chickens so that BB produces black, Bb produces a slate-gray color called blue, and bb produces splashed white. A second gene controls comb shape, with the dominant gene R producing a rose comb and r producing a single comb. If a pure-breeding, black chicken with a rose comb is mated to a splashedwhite chicken with a single comb in the F2 generation, what fraction of the offspring will be black with rose comb? a. 9/16 b. 3/8 c. 3/16 d. 1/8 e. 1/16