In terms of food capture, which sponge cell is most similar to the cnidocyte of a cnidarian?
A) amoebocyte
B) choanocyte
C) epidermal cell
D) pore cell
B
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Which hormone is released by the posterior pituitary gland?
a. antidiuretic hormone (ADH) b. thyroid stimulating hormone (TSH) c. follicle stimulating hormone (FSH) d. melatonin e. adrenocorticotropic hormone (ACTH)
The primary elements making up living organisms are
A. carbon, hydrogen, iron, sulfur, sodium, and calcium. B. carbon, hydrogen, oxygen, sulfur, nitrogen, and phosphorus. C. carbon, hydrogen, oxygen, calcium, iron, and iodine. D. carbon, oxygen, iron, chlorine, sulfur, and phosphorus. E. carbon, oxygen, sulfur, calcium, iron, and phosphorus.
Which of the following statements about fragile X syndrome is not correct?
a. It results in learning and attention disabilities in males. b. It results in hyperactivity in males. c. The location of the fragile X site is exactly the same in all of an individual's cells. d. It results in the formation of shorter-than-normal sequences of CGG. e. Females are usually heterozygous and are therefore more likely to have a normal phenotype.