Your classmate does not have much muscle strength. Her doctor says she has an autoimmune disease, but you didn't quite catch the name the physician gave for the illness. Based on what you have learned, what do you think the diagnosis is?
A) schizophrenia B) senility
C) myasthenia gravis D) Alzheimer's disease
Answer: C
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Which of the following statements is true of histones?
A) Each nucleosome consists of two molecules of histone H1. B) Histone H1 is not present in the nucleosome bead; instead, it draws the nucleosomes together. C) The carboxyl end of each histone extends outward from the nucleosome and is called a "histone tail." D) Histones are found in mammals, but not in other animals or in plants or fungi.
The data in the previous graphs indicate that _____
A) a hybrid zone was established after the completion of the bridge B) there was no migration between the two squirrel populations after the bridge was completed C) gene flow occurred from one type of squirrel into the gene pool of the other type of squirrel D) two-way migration of squirrels occurred across the bridge, but without hybridization E) some northern squirrels migrated south, but no southern squirrels migrated north across the bridge
Eukaryotes that are not closely related and that do not share many anatomical similarities can still be placed together on the same phylogenetic tree by comparing their _____
A) plasmids B) mitochondrial genomes C) homologous genes that are poorly conserved D) homologous genes that are highly conserved
What is the cascade of events that leads to the stress response of the adrenal glands?
A. hypothalamus produces ACTH-releasing hormone - anterior pituitary is stimulated to produce ACTH - adrenal cortex stimulated to produce glucocorticoids (regulate metabolism and sugar level) B. adrenal cortex secretes hormones - hypothalamus secretes ACTH-releasing hormone - anterior pituitary releases ACTH C. hypothalamus produces ACTH-releasing hormone - anterior pituitary is stimulated to produce ACTH - adrenal cortex secretes epinephrine and norepinephrine (regulate metabolism and sugar level) D. adrenal cortex secretes hormones - anterior pituitary secretes ACTH - hypothalamus secretes ACTH-releasing hormone E. anterior pituitary produces ACTH - hypothalamus releases ACTH-releasing hormone - adrenal cortex hormones then produced