Four of the five answers below are not legitimate prescription drugs. Select the exception
a. barbiturates
b. PCP
c. nicotine
d. cocaine
e. alcohol
A
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A major distinguishing feature between monocot and eudicot stems is the organization of the
A. epidermis. B. secondary tissues. C. vascular tissue. D. ground tissues. E. conducting system.
Which of the following is determined about
DNA from X-ray diffraction data? a. DNA is uniform in diameter. b. DNA is long and narrow. c. Part of the DNA molecule repeats itself often. d. The DNA molecule is spiraled. e. All of these are determined.
Arabidopsis plants with a mutation in the gene embryonic Flower (EMF) produce flowers almost immediately after germination, before shoot growth occurs. What is the normal role of this gene?
A. The wildtype EMF allele prevents flowering from happening too soon. B. The wildtype EMF allele causes growth of flowers in the embryo. C. The wildtype EMF allele prevents phase change and facilitates flower determination. D. The wildtype EMF allele causes death of the shoot tissue.
A scientist wants to perform a monohybrid cross for stem length in pea plants that will show all possible genotypes in the progeny. Which pea plants will they cross?
What will be an ideal response?