The dominance of what species in upper intertidal zones is an indication of heavy wave action?
a. Barnacles
b. Periwinkles
c. Mussels
d. Limpets
a
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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
In which type of cell would you likely find polysomes?
a. endocrine cells b. oocytes c. sperm d. inactive skin cell e. red blood cells
Which of following is an example of a continuous variable?
A. Weight B. Restaurant rating C. Gender
The chief function of root hairs is to
A) decrease the anchoring power of roots. B) increase the surface area for efficient absorption of water and minerals. C) provide a direct passageway from the soil to the vascular cylinder.