Animals that are being hunted (often illegally) for body parts thought to have medicinal value include:a
rhinos and bears.
b. cheetahs and snow leopards.
c. snow leopards and bears.
d. wolves and mountain lions.
e. mountain lions and black-footed ferrets.
a
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Which of the following statements are not true of hormone actions in plants?
A. Most plant hormones are effective in extremely low concentrations. B. Plant hormones influence cell growth and differentiation. C. Plant hormones may alter patterns of gene expression and rates of cell division. D. Plant hormones act independently and do not affect one another's actions. E. Plant hormones play a central role in plant development. Answer Point Value: 1.0 points
Cells are treated with a drug that blocks purine synthesis. Which bases would not be made in those treated cells?
A. cytosine, thymine, and uracil B. adenine and guanine C. adenine and thymine D. cytosine and guanine
A rural farm worker is brought to the clinic, experiencing a cluster of nodular skin lesions on his arm. Some of the lesions have ulcerated. The worker indicates that he frequently gets scratches and abrasions on his hands and arms and that the first nodule appeared several weeks after he had removed a sliver. The nodules have been progressing slowly for the past six weeks. What is the most likely infection?
A. Necrotizing fasciitis B. Candidiasis C. Subcutaneous mycosis D. Erysipelas
The ___ act as intracellular signals to begin the immune response.
a) proteins b) t cells c) cytokines