An amino acid that cannot by synthesized by cellular biochemical pathways (and therefore must be obtained from the diet) is called a(n) ____ amino acid
Fill in the blank with the appropriate word.
essential
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Type 1 fucosidosis is a rare human disease. Patients cannot hydrolyze the disaccharide fucose, and as a result have severe neurological decline and die by age 6. The disease is due to a defect in the gene that encodes the lysosomal enzyme that breaks down fucose (?-1-fucosidase), and is inherited in an autosomal recessive manner. Jane and John have a child who has Type 1 fucosidosis. What is the probability that their next two children will NOT have the disease?
A. None (all of their children will have the disease) B. 1/2 C. 3/4 D. 1/8 E. 9/16
Which of the following species does NOT fit
in the type III survivorship curve?
a. bees b. humans c. salamanders d. snakes e. goldfish
Which uterus layer is highly elastic and allows the accommodation of a nine-month-old fetus?
A. Endometrium B. Myometrium C. Exometrium D. Hypometrium
A nucleotide consists of ____
a. a five carbon sugar, a nitrogenous acid, and a phosphate group b. a six carbon sugar, a nitrogenous base, and a phosphate group c. a five carbon sugar, a nitrogenous base, and a phosphate group d. a six carbon sugar, a nitrogenous acid, and a phosphate group e. a four carbon sugar, a nitrogenous acid, and a phosphate group