Which cells of the pancreas produce glucagon?
a. alpha cells
b. beta cells
c. delta cells
d. F cells
e. gamma cells
A
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Twins are concordant for a trait when ____
a. both twins share the trait with at least one parent b. only identical twins have the trait c. only fraternal twins have the trait d. both twins have the trait e. all of the twins' siblings have the trait
In conifers, the time between pollination and
fertilization is a. just a few hours. b. about a day. c. about a month. d. about six months. e. a year or more
Which phylum of vascular, seed-bearing plants has over 260 000 known living species, and is the dominant group of land plants today?
a. Cycadophyta b. Ginkgophyta c. Gnetophyta d. Anthophyta
The glucose that enters glycolysis is split into two molecules of _______.
a) pyruvate b) NADH c) phosphate d) ATP