Inhibitory neurotransmitters are most like what part of an automobile?
A) brakes
B) radio
C) muffler
D) engine
Answer: A
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Microspore mother cells produce microspores. What do microspores then develop into?
A. egg cells B. pollen grains C. synergids D. endosperm E. megaspores
Answer the question using the accompanying figure. All of the orbitals shown in the neon atom are completely filled
with electrons. How many electrons does this neon atom have?
a. 5 b. 6 c. 8 d. 10 e. 16
Damage to which two structures determines the severity of a case of amnesia?
a. hippocampus / amygdala b. amygdala / hypothalamus c. hippocampus / thalamus d. hippocampus / hypothalamus e. basal ganglia / amygdala
In Drosophila, an individual female fly was observed to be of the XXY chromosome complement (normal autosomal complement) and to have white eyes as contrasted with the normal red eye color of wild type. The female's mother and father had red eyes. The
mother, however, was heterozygous for the gene for white eyes. Knowing that white eyes are X-linked and recessive, present an explanation for the genetic and chromosomal constitution of the XXY, white-eyed individual. A) nondisjunction in meiosis I or II in father B) nondisjunction in meiosis II of the mother C) nondisjunction in meiosis I of the mother D) nondisjunction in meiosis I of both the mother and father E) nondisjunction in meiosis I of the father