When were African honeybees first found in Texas?
a. 1965
b. 1990
c. 2008
d. 1978
e. 1952
b
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The partial twinning that led to the births of conjoined twins Abby and Brittany Hensel must have happened during the first two weeks of gestation, because the girls
A) share tissues that descend from ectoderm, endoderm, and mesoderm. B) share only tissues derived from mesoderm. C) were born on time. D) have two separate nervous systems.
Vitamin D deficiency in children causes
a. acromegaly
b. rickets c. elevated blood calcium d. kidney stones e. dwarfism
In invertebrates with open circulatory systems, hemolymph is composed of:
A. interstitial fluid. B. plasma plus interstitial fluid. C. plasma plus intracellular fluid. D. plasma.
Answer the following questions true (T) or false (F)
1. Although HSV-1 usually causes oral lesions and HSV-2 usually causes genital lesions, it is possible that oral sexual contact can transmit HSV-1 to the genitals and HSV-2 to the mouth. 2. The majority of human papilloma virus strains are oncogenic, and most infections lead to cancer. 3. Despite the approval of several vaccines against human papilloma virus since 2006, infection rates of HPV in young women have not declined.