Which term refers to plants that complete their life cycle in one growing season?
a. perennials
b. annuals
c. monocots
d. biennials
e. eudicots
B
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You grow a culture of bacteria and split it into two culture tubes. One sample of bacteria you treat with calcium and the other is not treated. When you transform both samples with a plasmid, only the samples treated with calcium take up the plasmid. Which of the following best explains your results?
A. DNA is degraded in the absence of calcium. B. Calcium precipitates DNA, preventing it from being taken up by cells. C. The bacteria require calcium to grow. D. The calcium makes the bacterial membrane more porous to DNA. E. The bacteria use calcium as a source of energy to take up the DNA.
The observable genetic traits of an individual refers to his or her ____
a. genotype b. phenotype c. locus d. gene e. chromosome
In situ hybridization allows one to "visualize" the location of labeled RNA or DNA in a tissue or cell
Indicate whether the statement is true or false
In capillaries the blood pressure pushes nutrients out of the capillaries toward the cells.
a. true b. false