The type of system depicted in Figure 44-1 is:
a. an open circulatory system.
b. a vertebrate circulatory system.
c. a closed circulatory system.
d. a lymph system.
e. an open digestive system.
A
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The filamentous DNA phages are unusual, because they
A) are released from the host without the host being lysed. B) have linear genomes. C) replicate without a host. D) are released from the host without being lysed and have linear genomes.
Which one of the following is a characteristic of integrins in metastatic cells?
A. These integrins give the cells a stronger attachment to the extracellular matrix, especially that of the basal lamina. B. These integrins allow the cells to cross the capillary basal lamina. C. These integrins allow the cells to cross the layer of capillary endothelial cells. D. These integrins can be targeted by an anticancer therapy that specifically targets the metastatic cells. E. All of these choices are correct.
Plants can generally absorb and make use of nitrogen in the form of ____
a. NO3- only b. both NO3- and NH4+ c. NH4+ only
d. N2 only e. both N2 and NH4+
Which disorder presents symptoms of unusual language use, rigid, repetitive behavioral patterns, and a significant fixation on specific ideas or concepts?
a. Obsessive Compulsive Disorder (OCD) b. Attention Deficit Disorder (ADD) c. Autism Spectrum Disorder (ASD) d. Attention Deficit/Hyperactivity Disorder (ADHD)