Painful, blister-like lesions that progressively become filled with pus suggest infection with a (herpesvirus/poxvirus/papillomavirus)
What will be an ideal response?
poxvirus
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Due to their pinnately compound leaves, tropical habitat, and overall appearance members of which phylum are often thought of as a type of palm?
A. Coniferophyta B. Gentophyta C. Cycadophyta D. Ginkophyta
Which of the following animals lack a "true"
coelom?
a. flatworms only b. annelids only c. roundworms only d. flatworms and annelids e. flatworms and roundworms
Why are mountaintops colder than valley bottoms?
What will be an ideal response?
Under the microscope, you observe the first few cell divisions of an embryo. Instead of dividing the entire ball, the divisions are only separating the top half into smaller and smaller spheres. The bottom half appears to remain as one large cell. What is a likely explanation?
A. Gastrulation has occurred. B. A developmental error has occurred. C. The bottom half is the notochord. D. It is a bird or fish embryo.