Social insect colonies are composed of highly specialized groups called what?
A. Species
B. Filial relatives
C. Clines
D. Ecotypes
E. Castes
Answer: E
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Two solutions of water and dissolved potassium and glucose are separated by a semipermeable membrane that only permits the passage of water
If the two solutions have the same total solute concentration, but solution 1 has a higher concentration of potassium and a lower concentration of glucose than solution 2, then which of the following statements is correct? A. There will be no net movement of water molecules between the solutions. B. Water molecules will move from solution 1 to solution 2. C. Water molecules will move from solution 2 to solution 1. D. Glucose molecules will move from solution 2 to solution 1. E. Potassium ions will move from solution 1 to solution 2.
The power used by most bacterial flagellar motors is produced by
A. synthesis of glucose. B. proton motive force (PMF). C. ATP hydrolysis. D. All of the choices are correct.
Cdks bind to cyclin and are activated by
a. phosphorylation by Wee1. b. dephosphorylation by Cdc25 protein phosphatase. c. the binding of Ink4. d. the binding of Cip.
Which of the following equations cannot be estimated using linear regression techniques?
A. Y = b + mX 2 B. Log(Y) = b + m[log(X)] C. Y = m1X × m2Z D. Y = b + m[log(X)]