A woman who is heterozygous for blood type A mates with a man who is homozygous for blood type O. What blood type(s) would their children have?
A) 75% heterozygous type A
B) 100% type A
C) 75% homozygous type O
D) 100% type O
E) 50% type A, 50% type O
E
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Water molecules and small ions enter a cell through
A) channels formed by integral membrane proteins. B) peripheral proteins. C) lipid channels. D) peripheral carbohydrates. E) defects in the lipid layer of the membrane.
GLUT4 transporters are _________.
A) only found in adipose and skeletal muscles. B) stored in cytoplasmic vesicles and found in adipose and skeletal muscles. C) only inserted into the plasma membrane by endocytosis. D) only inserted in response to glucagon. E) only stored in cytoplasmic vesicles.
Which antineoplastic drug inhibits folic acid synthesis?
a. methotrexate b. 5-fluorouracil c. cytarabine d. vincristine
Enzymes secreted by the small intestine include ________.
A. secretin B. histamine C. bile D. disaccharidases E. cholecystokinin